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Simplifying Opel Drivetrain Rebuilds

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1. N O Window iO Rotate flex plate here i using a screwdriver to weak no Ai fi h 5 m ie Br 3 at 0 an ARAA tI EICH ria Hi i Fowl E af TEE sim KE RoS i i i es 3 j E E j g i ay k Ps j Bt Saal i S i ee ee Pace j i i a7 i a ai A a 28 Adi TE lt a ee DO BH een Bits i cee A m ie i H F RT Sy F rey F jorran E i BA i 3 i i heen a Sexiest fj Germans rr i Cee iy i E H gt F Samanna i P asarum H A e j i att As l i i oe i a E gypenensneney maranan fl i 3 iF ee Fs si 9 i ih oY a S 3 iil H i i vaer SP a armi a f i SBS ENB eo som LUDE meee y ide eae e if EE RAU Te re i i fi si f Ws t J Vacuum Modulator i i e r oling me f 5 Attaches with vacuum hose to n ere they meet here 4 b pe a p Plia E pes Rua ee oe port on intake manifold If not MERT Bea SRD TE a n ON PP ig SSE ENN i el gg lt em ee z pen ai connected transmission will P E on B Ss R ed ney gp m nile ps T a a a not shift above 1st gear H Hi f 4 re I RES Se j HG properly sio g X AN Parts to Detach passenger side ae g Passenger Side N amp 5 41 Of Cooling hose Dipstick tube 2 Vacuum hose to manifold fi of i Shifter linkage bracket Opelclub com 3 2008 l tor fs l arte Neutral Safety Switch wires N ter Transmission Conversions Like the interior color it seems th
2. 4 Rotation to loosen rocker nuts until the rocker arm becomes loose and no 4 TDC marks longer touches the top of the valve and you can easily move it is necessary with your hand side to side The number of turns this takes can because vary with the position of each individual camshaft lobe but on a grooves head I measured it required 6 full 360 degree counterclockwise _ at are located turns on the 15mm rocker nut to do this only in that camshaft position allow access to 3 of the recessed head bolts 8 Remove the Valve Cover you may have to lift the hood latch to twist the back end over the top side of the cylinder head Opelclub com 3 2008 Exception to 9 If you plan to reinstall the same head then you can leave the valve settings where they 10 Loosen timing chain 11 Remove the triangular shaped tensioner until almost removed front camshaft cover plate and the about 12 full 360 degree turns fuel line holding bracket located there this is the large 1 1 16 or 27mm bolt head located above the oil Below Right are if you are eier 1973 1974 Style Loosen careful to sit the hardware here head down ONLY N connects to upper on its side during radiator hose and after the removal process to avoid damaging the exposed edges Oil of the open valves Pump Above Leit on the underside of Relief gt 1968 1972 Style the head Valve socket 12 13 14
3. If the vehicle has an original A I R pump and manifold hose installation carefully unbolt and disconnect the pump leave the valves on the pipe assembly to remove your engine Many early 1 9 engines up to serial 19S 262029 retained the double grooved crank pulley the inner pulley had a small diameter and the lower engine side pump mount brackets can be adapted to custom mount an air conditioner compressor Fa 1970 1973 Evaporative Canister Carbon Canister Round outer foam filter should be replaced to The most common system the sideways mounted a retain internal charcoal pellets Center port to canister near the battery passively captures and filters vacuum on carb and upper side port to float fuel tank and carburetor fuel bowl vapor emissions bowl on carburetor aren t required for operation amp can be capped Gas Tank Connected to the center canister port one hose ewer devo to tucltank output helps to prevent a buildup of internal tank pressure should alwavs be attached and intact If the vent hoses are disconnected crack or otherwise leak a strong gas smell will be noticeable inside the car when the tank is half or more full of fuel CANISTER PURGE Carburetor Original Solex carbs had 2 output hoses to this canister S which should be detached when fo S e a engine is removed 7 A al Some Weber 32 36 DGEV 33B1 series s 7 have a port for 1 hose When not y in use either or both the
4. of O dober 2007 in response to the Power to the Opd artide of A ugust 2007 Regarding the O pel Manta story when I was in college I had a 1969 Opel GT for afew months Most GT s seemed to have the smaller engine a 1300 I believe but mine had the optional 1900 engine That car was a real screamer G ray with red interior four speed tranny that thing flew and handled well too Going to the local Buick dealership for parts was a nightmare The mental pygmies who worked there hated furren cars and wanted nothing to do with O pel The parts counter people would Above Scrutinizing the Factory Warranty give you a sneering look and grumble as they looked up a part Note 1100cc was the base engine size for 1968 1969 and a few 1970 GT s They apparently thought that everyone buying an O pel was personally driving the American car companies out of business It was like walking into an enemy camp a really hostile environment I have no question that O pel is no longer here mainly due to the idiots who were supposed to service and maintain them Like Fiat who built some pretty decent cars and gave franchises to shifty used car dealers out on bail from their indictments Opel was such a good car that it could have been in our market today like VW and BMW but the morons at Buick did their best to drive people away from their showrooms Well at least Buick now has the blue hair market cornered Lance
5. 1 9118 1 9124 Haynes Manual 4 Journal Outer Diameter 1 9069 1 9075 Haynes Manual Note Semi finished cam bearings require align boring for installation After pressing bearings in STD diameter specifications for boring bearings are 1 Inner Bearing Bore Diameter 1 930 1 931 Haynes Manual Cam Bearings amp Journals in 2 Inner Bearing Bore Diameter 1 920 1 921 Haynes Manual Opel Cylinder Heads are 3 Inner Bearing Bore Diameter 1 915 1 916 Haynes Manual numbered front to rear 4 Inner Bearing Bore Diameter 1 910 1 911 Haynes Manual Camshaft Bearing Clearance Specification 001 003 Note Above dimension apply only to standard sized cams amp bearings Service undersizes were sold by Opel Valve Clearances Standard 1 9 Opel amp Opel 2 0 engines share the same sized valve stem diameters Measure valve guide clearances to ensure a fit Intake Stem 3538 to 3543 8 987mm to 9 00mm Exhaust Stem 3524 to 3528 8 952mm to 8 965mm Intake Stem Clearance 001 to 0029 025mm to 064mm Exhaust Stem Clearance 0024 to 0039 06 to 098mm Maximum Head to Stem Runout Intake 0016 04mm Maximum Head to Stem Runout Exhaust 0019 05mm Standard sized Opel valve guides 3553 to 3562 9 025 to 9 05mm in the head can reamed for accuracy Note Some aftermarket valves will vary from above factory specifications Y
6. 1 mark aa cylinder head if the carb was 2 To verify accuracy g Fi S mounted recently or remove turn crank until the the carburetor from the intake small flywheel mhh aed manifold first for easier ball ee ker lines up Jy access to the manifold bolts Wi a indicator pin j a lt You don t have to separate the 7 manifolds from each other Manifold 6 Bolt Location and you don t have to unbolt it at the exhaust head pipe which usually just breaks the bottom bolts anyways You should however place blocks or some other supporting devices under the exhaust system then remove each of the donuts that connect the 3 in the window i at rear passenger side E ie 2 a of the engine block 3 At true 4 TDC when installed correctly the index mark on the camshaft upper sprocket gear should be at the top exhaust to the underbody of the car before pulling the manifolds vertical 12 o clock You can just pull the manifold assembly off the 2 locating pins on the position and the side of the cylinder head and set it aside on the inner passenger fender outer gear marker or hang and steady it with a coat hanger off the underhood latch should line up with the notch in the bottom plate You would have to remove the valve cover and or the front triangular camshaft cover to see this 9 If head is to be serviced or replaced use a 15mm deep socket to
7. 1968 1970 4 speed transmission consider draining gear oil by removing drain pan then reattaching it If Automatic Transmission consider draining trans fluid by removing drain plug then detaching both flex hoses near radiator A T Flex Hoses Best to detach where metal lines meet rubber flex lines at radiator can be difficult Electrical Wires With battery disconnected remove wires to engine components such as the starter alternator distributor etc see details on another page Carburetor Disconnect Linkage Vacuum amp Fuel Hose y Ee Hose Fuel Hose S T i Distributor Vacuum Vacuum Hoses Remove the hoses that connect to the intake manifold from the brake booster the distributor vacuum retard and the thinner of the 2 ports on the valve cover Carburetor Fuel System Detach the hose to the distributor vacuum advance Remove the small linkage pin then detach the throttle linkage from the ball shaped connector at the carburetor Disconnect Choke Electric choke wire or hoses to water choke or cable Remove hoses from fuel pump catch any fuel spillage then carefully Intake Manifold Vacuum Hose Connections pull hose off of any attachment clips to engine or transmission Remove the air cleaner if equipped remove the lower inside 13mm bolt and pull the round canister from fender Exhaust System Remove rubber hangers donuts from muffler and rear resonator Detach support
8. 1 Crank Pulley Side Front AC on inner groove of Gates 9510 belt 2 groove pulley design G M Frigidaire Air Conditioning System Originally dealer installed as an option on 1971 1973 GT s Visual identification is by the large heavy 40 Ibs black cylinder model A6 and unusual brackets which cracked and required welding on the driver s side of the engine as well as the wedge shaped peak of the console on the passenger side interior and blower borrowed from the GMC Suburban A complete guide to GM A C for the GT is in the 1973 Opel Factory Service Manual Opelclub com 3 2008 Customized Air Conditioning Systems As original Opel GT systems are heavy inefficient and rely on outdated and expensive R 12 refrigerant more GT owners are retrofitting with later model air conditioner systems Using Sanden compressors from compact Geo Metros custom mount brackets are usually installed on the lower passenger side of the engine Other equipment frequently includes condensers mounted in front of the radiator thermostatically controlled electric fans and aftermarket R 134 compatible parts Generic parts from aftermarket suppliers like Vintage Air are added for modern interior installations Firewall Area Loom to Oil Switch choke wire is optional Applies ate Phang r Dashed Wire Coil to Starter within loom v a Electric Ch
9. 15 16 17 18 19 20 21 Carefully unscrew the 11mm head nylon camshaft spacer bolt from camshaft front p Nylon Bolt Stuff a rag in below the camshaft sprocket this is to prevent the loosened 8mm cam sprocket bolts from dropping into the engine Use a small dot of white paint or consider scratching a small x mark to note the relative position of the timing chain to the camshaft sprocket gear for accurate reassembly if needed Then use a couple wire ties to secure the chain to the sprocket Camshaft Remove the three 8mm camshaft sprocket bolts Make sure you clean the middle of each of these bolts then firmly seat the tip of the special 8mm serrated bit before you begin to unbolt them These are vulnerable to stripping and if they begin to stick in place you may have Above to simultaneously use both a vice grip on the bolt exterior at the same Head of 8mm time as you turn the interior bit tool to get these bolts to turn Serrated Bolt Remove the rag mentioned in step 13 Right Camshaft Use rubber faced mallet hammer to lightly tap the back of the cam Sprockerdl sprocket until it releases from the camshaft Set this sprocket with 4TDC setting chain a bit forward on the metal support bracket Use the 12mm serrated bit tool and follow the sequence in the diagram loosen the head bolts free Make sure that the notches in the camshaft are perpendicular which require
10. Alternate approaches including the Support Engine use of a homemade device above or raising the car with a thick rope through the tow hook at the inside of the front 1 Remove top 15mm nuts from motor mounts 2 Place a wood block on the jack surface so as to not damage the oil pan and use this to raise the engine slightly for support Note The homemade device employing wood 2by4 s bolted together illustrated in some service manuals is not recommended on the GT as it may bumperette are not damage upper fender metal It was suggested for oil pan removal on the car recommended These as but a later Opel tool J 23375 was developed for that application can be extremely risky and also cause damage to the car itself Opel J 23375 Tool Motor Mount Brackets Upper Mount Hole Location varies side to side Driver s Side Edge of Hole to bracket edge about 5 8 Passenger Side Edge of Hole Bolts to mount tops to support engine for oil Chain Mount Locations Passenger to bracket edge is 7 pan removal amp Driver s Side of Engine Shown closer about i 5 16 J T g 3 Remove the hood mark locations of 4 attaching bolts first Measure Here 1 N 4 Roll up a cherry picker lift to front of the car then attach to engine with sturdy chain minimum 1 4 wide with 2 links connected by original high grade original hardened metric bolts at locations on the e
11. GT s an added and moisture intake by plugging all cylinder head ports with oiled rags safety feature that year to keep motor mounts and re install spark plugs then cover engine with layers of plastic bags from shearing forward in a collision Opel GT Engine Removal Steps The factory service manuals lists a number of steps for engine removal from a GT Where applicable we ve added details to complete this list for the home garage mechanic Read all instructions before beginning and decide if you ll detach the transmission or not 1 Disconnect battery ground cable 2 In a well ventilated area drain all fuel from tank amp system remove via hose at fuel pump inlet place fuel in certified gas containers 3 Drain engine oil Cooling System Drain coolant by disconnecting lower radiator hose use a wide pan and quickly wipe up any spillage then remove upper radiator hose also unbolt fan shroud if equipped Unbolt the lower mount bracket 13mm bolt swivel the lower bracket clear of the fan blades and carefully lift the radiator out of the car Disconnect the heater hoses from the thermostat housing and water pump inlet and from the carburetor water choke if equipped Cooling System Drain Radiator amp Disconnect Also Disconnect All Hoses fa Transmission If late style 1971 1973 4 speed manual transmission consider draining gear oil by removing the reverse switch If early style
12. N Savannah Georgia Response We have hope and confidence that the new Saturn and dealers of its cousin the Pontiac Solstice will learn the lessons of Buick from long ago They ll have more time to do this as the 21st century Opels are far more durable than their classic predecessors Hardtop 2009 Solstice as seen at the New York Auto Show Will the Opel In the meantime it s hoped that this OMC Blitz Engine Drivetrain tech tip GT also get its hatch back back article series will not only become the service manual that Buick Opel should have written but will also encourage today s owners of these classic cars to fulfill long desired wishes for having More Power available on demand under the hood of their Opels OMC Club News 2008 Election Results President Elect Paul Heebink 100 It s become almost an OMC tradition that unusual events apply to the election of an OMC President and once again this year was no exception The morning of the day that we were to tabulate the returned ballots and begin a formal transfer of that office we received a message that stated for personal reasons that the President elect had been advised not to assume the title Clarification was requested and an alternate plan developed So yes OMC will welcome member Paul Heebink as our President just not right away the tentative date is April While that may not be soon enough for some critics of
13. actually a uniquely formulated race oil that s suitable for older flat tappet camshaft engines and it offers additional engine protection beyond high levels of ZDDP Where can hobbyists purchase Brad Penn products Penn Grade 1 products aren t available through local retailers Instead present distribution goes through select independent lubricant wholesalers engine builders and specialty racing performance outlets Contact us via our Web site and we ll reply with the nearest authorized Brad Penn Racing distributor Comp Cams Cam Manufacture What about STP COMP Cams is a well known aftermarket camshaft Oil Treatment manufacturer With word of oil reformulation buzzing about Comp Cams has addressed this issue STP Scientifically Treated Comp Cam s Tony McCurdy was contacted and asked DA 4 ae e eal f Is current oil formulation an area of concern for COMP Cams States witha long COMP Yes definitely Because of tightening environmental automotive history tasine orenk te A regulations modern engine oil isn t the same as it was just a The reference to ZDDP on few years back The federal government recently required its label suggests that STP the reduction of key ingredients such as zinc and manganese now owned by Clorox in all types of gasoline and diesel engine oils could be the most widely which continues to plague flat tappet camshaft engines distributed and the most What Deakin rocedure does Comp
14. arrange OMC activities in 2008 Member Survey Results Counts exceed 100 due to multiple selection format Question 6 In 2008 what kind of OMC participation will you commit to I will provide a profile of my Opel or an Opetrelated story for the Blitz 40 of respondents I will provide a profile a recap of an Opeltrelated event for the Blitz 10 of respondents I will provide a tech tip for the Blitz 10 of respondents I will volunteer to serve as an officer for OMC 20 of respondents I will assist with activities of my local OMC Chapter 30 of respondents Question 7 What interactive features should OMC provide Send bi monthly emails in between Blitzes with club amp event updates 50 of respondents Add an article submission form page to the OMC website 50 of respondents Add message boards cars amp parts wanted amp for sale on OMC Website 10 of respondents Develop Interactive Forums 0 of respodents Question 8 How would you like OMC to become more interactive I will volunteer my time and labor to moderate the website 0 of respondents OMC should hire a computer programmer to upgrade the website 40 of respondents Question 9 Keeping in mind that OMC is an all volunteer organization what improvements for the Club are you willing to contribute to ensure our success throughout 2008 TI continue to own at least 2 Opels and read my Blitz every 2 months Higher OMC member fee I will send in a subm
15. bargain to us for the Blitz alone not to mention the activities support I would be happy to pay say 60 for a semi annual Blitz if necessary I am a firm believer in having a hard copy for reference The fact that OMC charges only 20 for online members seems wrong The Blitz info pictures is worth more than 20 Membership alone in any club should be more If all members paid the same would this extra money be enough to keep the Blitz hard copy afloat with a paid writer Anyway I though I would vent my mind Surely there is an OMC member who has experience as a writer reporter person Perhaps money will persuade To Gil amp Dennis My sincere thanks I enjoy reading the Blitz no matter how long it takes to write Sincerely Rick in NY Editors note The most detailed response to the Mako Shark and Opel GT show car question was answered and published in the April 07 issue of Corvette Magazine page 76 81 as referenced in the J an Feb 08 issue of the Blitz The article in Corvette Magazine was written by an Opel GT owner who also happens owns a Corvette and as a part of our article seeking efforts OMC is requesting reprint rights for inclusion in an upcoming Blitz The Truth About Today s Oil and What we as Opel owners can do about it Back in J anuary of this year I was made aware of the negative effects some modern motor oils have on our flat tappet camshaft engines by my local engine builder He explained to
16. have literature manuals all cars trucks motorcycles world wide Visit our website http Awww autolit com Walter Miller 6710 Brooklawn Syracuse NY 13211 315 432 8282 Fx 315 432 8256 or E mail info autolit com From the internet This column samples a variety of Opel models amp narratives that were recently posted for sale via the Craigslist com free public listing service 1958 Opel Rekord The family is getting bigger and one of my projects has to go The vehicle runs and drives and has a clear title It has only 18000 mile on the odometer The car has been sitting for a few years so the battery is junk and the brake master needs to be rebuilt I have all the trim and have new tail lights and turn signal lenses My wife wants it gone and my friend is sick of storing it for me so my loss is your gain 900 303 598 2298 CO 1959 Opel Rekord 2dr needs work have parts 1000 Call Mike for info 707 526 7262 CA 1959 Opel Rekord Gasser Project Early 60 s race car former 396 no motor or trans rolls complete removable front sheet metal narrowed rear end A project has title and CA plates extra parts 2000 obo Call Steve 707 824 9039 CA 1960 Opel Rekord Sedan Talk about your 1955 1957 Chevy look a like very original very solid very undamaged original California car If you ever wanted a unique car that noone else has in the entire United States you have just found it 1500 Ask for Todd or lea
17. hydraulic flat tappets lifters which require the friction modifier ZDDP in the engine oil to avoid premature deterioration ZDDP is a surface modifier that alters bearing and journal surface characteristics to prevent metal to metal con tact Under high rom 3000 rpm heat and pressures quickly increase the ZDDP molecule quickly plates over the contact surface with an extremely thin glass like film and provides a sacrificial coating As soon as the engine conditions get back to normal the film dissipates back into the oil solution This action prevents the lifter and cam from making contact and greatly reduces the tendency of parts to scuff under the heavy load boundary lubri cation situations Camshafts and lifters found in the our older Opel engines definitely fit this category These high load conditions also exist in the piston wrist pins In other words this description clearly fits the characteristics of our engines Back before 1988 normal amounts of ZDDP could be found in our domestic engine oils The API grade SG oils contained in excess of 0 12 ZDDP by weight The API grade of oil prior to this was SF and had concentrations in excess of 0 15 For more than 38 years it was possible to buy E O S Engine Oil Supplement from GM in a 16 ounce bottle Note E O S was even mentioned in the 1969 Opel Owner s Manual as being available at your local Buick dealer Unfortunately E O S was withdrawn in the second quar
18. lights and master cylinder warning switch 5 Starter amp Solenoid Top Bolt Terminal A Positive battery cable attaches here Also a Red White striped 10 gauge wire with 5 fusible link connects from here to a fusebox terminal Left vertical slide terminal B Black 14 gauge wire connects to positive terminal on ignition coil starter bypass Right horizontal slide terminal C Black Red striped 14 gauge wire connects to ignition switch in steering column Auto Trans Neutral Switch Not shown A protective relay is also recommended for installation between A and C here Positive Terminal Black 14 gauge wire connects to left slide S terminal on starter solenoid shown as a dashed line on above wire loom diagram N Clear 12 gauge resistor wire 1 8 ohms 77 long connects to a fusebox terminal This resistance protects ignition points If wire fails replace with standard wire amp add an early 70 s Chrysler ballast resistor Replace wire w o resistor for Pertronix unit Alternator Output B terminal Red 10 gauge wire with 5 inline fusible link supplies 12V power to main fusebox terminal Ground ra Brown 12 gauge wire connects to 15mm bolt on lower alt mount bracket Some alternators also LA Si VAUD OAT OR _ 0 L t lat have a radio noise suppres Q AANA a r Loom Sa a sion device on center rear 1 w
19. of E Another Aftermarket Vendor Main Bearing Bore Diameter Front of Engine ___ B C ARA oes F D Crankshaft Pilot Bearing Diameter STD Size 1 0807 to 1 0831 Connecting Rod Housing Bores Aftermarket Parts Vendor STD 2 1653 2 1658 Another Aftermarket Parts Vendor STD 2 165 2 166 Rod Bearings Opel Factory Standard Rod Bearing Journals all 9858 0015 Opel Factory Connecting Rod Width 9789 0010 Connecting Rod Opel Factory With Undersize 010 25mm 9858 0015 Housing Bore Area Opel Factory Connecting Rod Width 9789 0010 for Rod Bearings Opel Factory With Undersize 020 50mm 9937 0016 Opel Factory Connecting Rod Width 9867 0010 Opelclub com 3 2008 The Opel Motorsport Club offers advertising as a service to its members and does not endorse or bear responsibility for any claims made by advertisers OMC suggests exercising caution in any transactions for items including checking out the reputations of vendors on Internet discussion boards such as at www opelgt com Panta amp Senvices Sales Brochures OPEL ORIGINAL sales brochures showing all Opel models interiors features for the year Great for Restorations or Gifts ALL PRICES PER YEAR 1947 49 40 1950 54 35 1955 64 25 1965 69 18 1970 present 15 Add 3 85 shipping Specify year amp model VISA MC Also
20. oil non detergent and without additives and SB contained additives which could not be used in the earliest cars specified for SA While it is true that SM oils are better for newer cars they are not better for older cars Simply put the newer and or better oils are not backward compatible for older cars primarily due to the gradual reduction of ZDDP starting with SG grade in 1988 How much ZDDP should I have in my Opel s engine oil ZDDP is most effective if the concentration is between 0 18 and 0 20 by weight Higher ZDDP concentration has no effect except to prolong additive life Opel also noted in the Opel Maintenance Schedule that the oil should be changed every 3000 miles if any of the following severe driving conditions were experienced A the excessive idling stop and go traffic B short trip operation in freezing temperatures C driving in dusty conditions or D trailer pulling 12 But My Engines Stock I don t drive hard What s the big deal Engines with flat tappet cams have extremely high pressure loading at the contact point between the lifter crown and the cam lobe According to Mark Ferner from Quaker State Motor Oil Research and Development Even stock passenger cars can see pressure in excess of 200 000 psi at the point of lifter and 0 1000 2000 3000 apoo sooo eooo 7000 Cam lobe contact To prevent excess Miles wear traditional motor oil included a The chart above is a good illustration of
21. on camshaft sprocket is at 4 TDC and also verify that the timing mark at the flywheel is also at 4TDC This is a critical step If the marks are not lined up correctly redo the process to make sure they are The mark added in an earlier step should help you make sure the chain did not slip If you are installing a new chain for the first time then you have to check the various timing marks to make sure you get this right Opelclub com 3 2008 Cam Sprocket Index Mark Distributor Manifold and other part Re Installations Verifying 1TDC 41 42 43 44 45 46 47 48 49 50 G1 Rotate the 19mm crankshaft bolt degrees Rotate 19mm Crank until the engine is at 1 TDC setting Pulley Bolt Until If the distributor was moved or removed reinstall it 1 Flywheel Ball now with the rotor facing the 1TDC distributor mark _ 18 at Pointer Mark instructions for doing this are in the June 2006 2 Distributor Rotor OMC Blitz or online look under Tech Tip Points at 1 Mark Engine Tune Up for that June 2006 date 3 Camshaft Mark Accurate timing is important for restarting the engine is at 6 O Clock Carefully install the front nylon camshaft spacer bolt Caution Do not overtighten this bolt it damages easily The Nylon Bolt in the camshaft is designed Add the triangular shaped front cover and bolt the fos Hawk fronii sbacicirawel Ik aeHOr te b
22. on clutch cable behind the E Clip for extra support Flywheel with 6 17mm bolts Gear Oil suggest 85 90W 2 1 2 pints Can use 140W if transmission is worn or noisy Speedometer W 897 If transmission is early style 1968 70 GT or W 1062 later GT Transmission Reverse Switch Early style on driver s side Later style on rear of trans Rubber Cap on Vacuum Fitting cap port on intake manifold for automatic trans vacuum Option Higher Performance Clutches Opels with a higher performance engines over 110HP such as an Opel 2 2L 2 4L or an engine converted to 2 4L a clutch larger than the stock 8 0 is needed i 1 1 8 long To do this some use European Opel 9 wide clutches as an easy bolt on upgrade Manta Others machine the flywheel flat amp re drill it for a later model Chevy S 10 clutch Seeve is shown as Advantages of the S 10 are initial replacement part price and availability but s disadvantages offset this with higher machining costs such as re machining a longer clutch arm pivot bolt Long term S 10 durability has also been questioned due to asymmetrical clutch bearing to pressure plate contact angle Opel GT 4 Speed Transmission Early Style 1968 1970 Speedometer face reads W 897 in lower center on 1969 1970 GT s Note Some early 1968 1969 speedometers are marked on the rear only Speedometers marked W 1020 are calibrated for the 1 1 engine in the GT Driver s Side linkage p
23. rear main seal so it slides all the way into the block Replace all main caps in their proper positions remember tang to tang on the bearings Torque all main cap ees bolts to specs again using the 3 step process and moving from middle to me i ROOF _ _ _att 24 17 Measure the width of the crushed 24 13 Lay the Visitan strips on each ends during the process After all mains are torqued make sure you can rod bearing journal parallel to the cig itt e crankshaft centerline spin the crank over by hand If you can t there is a problem which needs attention the Specifications Reference What is Plastigage What is Plastigage Sources say it s a very thin wire like piece of special I E I E E of of extruded plastic thread with accurately controlled crush properties which provides a fast and accurate way to check bearing clearances 001 TO 003 INCH CLEARANCE RANCE What follows is a compilation of notes on this product used for an important USE PB 1 BLUE FOR 004 TO 008 INCH engine assembly procedure Above Sample Plastigate Measuring Strip Although it s trademarked now by the Dana Corporation it s offered in caution this is not shown to scale different thicknesses and can be found in most quality auto part stores packaged by brands like Federal Mogul Sealed Power Powerbuilt etc While this is a critical measurement required to be done sometimes more than once before you perform a final a
24. the present administration it affords some time to tie up a few loose ends Vice President Secretary Matt Newman 67 Paul Campbell 33 Our congratulations go to Matt Newman but our understanding should also go to Paul Campbell This was not originally arranged to be a competition for this office as these candidates originally volunteered for separate offices It was only after we rechecked the overlooked by law revisions enacted in 2003 that we realized these offices had already been combined Matt is better known nationally via his postings online whereas only the local OMC community knows Paul personally by his attendance at OMC meetings and events Matt has advanced an activist agenda particularly in the area of communications with new members Combined with the digital new member packet that has been drafted with club history updated bylaws and index to recent Blitzes OMC can expect to be better served in this area in 2008 Treasurer Dick Counsil 100 OMC s treasury is in the black and OMC s backbone received a well deserved unanimous endorsement for 2008 Editor Write In Dennis Gardiner 50 Write In The Secret Agent 50 Unfortunately Dennis declined the nomination and no one could find T S M It ll be guest editors again in 2008 Activities Coordinator Write In Roger Wilson 100 After some consideration this write in office was declined A Volunteer is requested to
25. upper and os lower canister ports can be capped _ rue vapors 1973 Exhaust Gas Recirculation EGR Valve Threaded Intake Manifold Port The EGR valve was vacuum driven to redirect Unique to manifolds for Opels with EGR inert gas into the combustion chamber via a threaded valves 1973 1974 Some 1974 Mantas port on top of the exhaust head pipe back into the had a double valve style EGR intake manifold to lower unburnt gas NOx emissions 9 16 diameter Ported Gas Fitting In practice EGR valves clogged with carbon fits 1 4 PIPE thread particulates and were rendered inoperative ae s Nee ae oo data The metal pipe also vibrated deforming the ii threaded port on the intake manifold causing Hose to extra carb vacuum advance port vacuum leaks there too on 1973 engines Port on Solex amp Weber 32 36 series 33B1 carbs that already had low power output When a visual inspection of emissions equipment was required for registration some mechanics blocked the attached metal hoses with a glob of fast setting JB weld When removing the engine unscrew steel tube fitting Menio EE T at intake manifold and disconnect vacuum hose Exhaust Pipe Intake Manifold EGR Port Opel GT External Engine Hardware Air Conditioning There was no factory installed air conditioning originally made for the Opel GT But when 1969 GT s were selling well aftermarket air conditioning manufacturer A R A
26. will transfer to the paper This has no effect on the accuracy of the Plastigage Place a piece of Plastigage the full length of the bearing insert about 1 4 off center Rotate the crank about 30 degrees from the bottom dead center and reinstall the bearing cap Tighten the bolts with a torque indicating wrench as recommended by the manufacturer Remove the bearing cap The flattened Plastigage will be found adhering to either the bearing shell or the crankshaft Compare the width of the flattened Plastigage at its WIDEST point with the scale of graduations on the envelope wrapper The number within the graduation on the envelope indicates the bearing clearance in thousandths of an inch or in millimeters depending on which side of the envelope is used Compare your measurement to the clearance specification if you are within range then you are ok to assemble If the measurement falls between two sizes then you can estimate what the size in between is TAPER is indicated when one end of the flattened Plastigage is wider than the other Measure each end of the flattened Plastigage The difference between the readings is the approximate amount of taper Clearance Specification Notes Make sure you re using the right range of plastigage for your application Too much clearance means that your engine will probably be low on oil pressure Opel Factory Spec s Main Bearing Clearance 0009 0025 inch Connecting Rod Bearing Clearance 0006 0025 i
27. ACHTUNG Inside this issue ZDDP What you NEED to know OMC 2008 Election Results OMC Member Letters Tech Tip Part 2 Engine Rebuilds and Drivetrain Installations Volume 28 Issue 2 M arch April 2008 41 ELAND W ralQe Tl A ye ry EREL che Unscrew 41 and disconnect aX body from the chassis to replace the batteries Simplifying Opel Drivetrain Rebuilds Welcome to the Opel Motorsport Club THE OPEL MOTORSPORT CLUB IS CELEBRATING ITS 28 YEAR OF DEDICATION TO THE PRESERVATION AND APPRECIATION OF ALL GERMAN OPELS WITH SPECIAL EMPHASIS ON MODELS IMPORTED INTO THE UNITED STATES WE ARE HEADQUARTERED IN THE LOS ANGELES AREA AND HAVE CHAPTERS ACROSS THE COUNTRY IN EUROPE AS WELL AS MEMBERS IN CANADA AND MEXICO MEMBERSHIP BENEFITS INCLUDE SUBSCRIPTION TO OUR NEWSLET TER THE BLITZ LISTINGS FOR PARTS AND SERVICE SUPPLIERS BLITZ INDEX amp TECH TIP INDEX 1985 DATE FREE CLASSIFIED ADS 3 PER YEAR CLUB ITEMS MEMBER ROSTER OWNER SUPPORT AND ACTIVITIES INCLUDING MEETINGS AND OUR ANNUAL PICNIC amp CAR SHOW The Club TO APPLY FOR MEMBERSHIP CONTACT OMC TREASURER c o Dick Counsil 3824 Franklin Street La Crescenta CA 91214 1607 MEMBERSHIP DUES Regular 45 Annually via Checks and Money Orders US funds only made payable to Opel Motorsport Club or 47 annually via PayPal Online 20 annually or 21 via PayPal Send PayPal funds to JoinOMC opelclub com Include your name and address i
28. Cams recommend conveniently available additive Proper engine break in is a key element in the longevity of any flat tappet camshaft We strongly recommend that the new flat tappet camshaft and Of STP s Media Liaison Technical Advisor OMC asked its lifters be liberally coated with our No 153 Cam amp Lifter Installation Lube STP Oil Treatment claims on its label We also suggest adding a 12 ounce bottle of our No 159 Camshaft Break In that it Contains ZDDP can you state Oil Additive to the crankcase As soon as the engine fires increase the rpm how much ZDDP is in your product to 2 000 to 2 500 rpm for the first 30 minutes of operation while periodically STP Oil Treatment and STP 4 Cylinder varying the rpm to ensure direct splash oiling on all areas of the camshaft ilgicentumentcontaimelrausosortie After the break in process is complete we suggest changing the oil and ZDDP additive per bottle filter to remove contaminants filling the crankcase with the customer s choice of high quality conventional or synthetic oil and adding a fresh bottle of our No 159 Camshaft Break In Oil Additive For clarification if STP Oil Treatment was to be added to 4 quarts of the stan dard current grade SM engine oils You suggest Cam shaft Break In Oil Additive for long term use which is regulated to 870 parts per mil Can you explain the advantages lion ZDDP can you tell me what the The product was initially developed spe
29. OIL s Director of Advertising Ed Newman was asked Does your company offer any products intended for use with flat tappet camshafts We offer a full line that contains an extreme pressure additive package that have a proven history Products like our AMO 10W 40 and ARO 20W 50 gasoline engine oils contain high ZDDP levels and are perfectly suitable for flat tappet cams We re very committed and are actively pursuing ways to specifically market these lubricants to classic car hobbyists Shell Rotella T Designed for the harsh environment within a diesel engine Shell ROTELLA T has aptly earned the reputation as a high quality maximum protection lubricant With reformulation of gasoline engine oil a few years ago many hobbyists with flat tappet camshaft engines have found salvation in commercial grade oils like ROTELLA T which have typically maintained high levels of the desirable anti wear additives Current ZDDP levels are 1 200 ppm Shell s OEM Technical Service Manager Stede Granger was asked Youre likely aware that ROTELLA T is used by many automotive hobbyists with flat tappet camshafts Are there any negative effects when using ROTELLA T in gasoline engines For older gasoline engines that are no longer under warranty and emissions aren t a concern there are no major negative effects when using ROTELLA T In fact it carries an API S series rating The only possible concern I see is viscosity 15W 40 will not
30. RAG Driver s side linkage pivot point is part of the transmission case Clutch Return Spring is 10 1 2 long from clutch arm to hole in trans mount bracket Speedometer Gear Late Model Located on Driver s Side of Transmission Opelclub com 3 2008 Speedometer Gear is Plastic blue in color Metal gear housing is retained by a Shim held with a 10mm bolt Cable attaches to end of gear Reverse Switch D Screws into the rear of the transmission Replace if gear oil leaks from switch lt T O Use a 22mm wrench to remove this switch s to easily drain gear oil out of transmission Converting GT to Automatic Transmission Most common reasons for converting to an automatic are for stop and go city driving or for operation by a family member who doesn t want a clutch But the GT automatic transmission is bulky heavy and difficult to install without a lift It produces a slower vehicle with less acceleration runs coolant 10 to 20 degrees hotter and some replacement parts like a flex plate with undamaged teeth can be pricey when you find them in good condition Known problems are fluid leaks and inability to shift out of 1st gear caused by disconnection of vacuum line from the intake manifold fitting to the vacuum modulator List of Parts needed Flex Hoses Automatic Transmission from an Opel GT GM Turbo Hydromatic 180 ae fee ort MY attach to Note GT is unique as it has linkage on th
31. Required Supplies Opelclub com 3 2008 Bolt Heads are partly Oil 4 Quarts of SAE 30W or 20 50W viscosity visible here Oil Treatment with ZDDP additive helps protect camshaft lobes and lifters Coolant 1 Quart standard type 50 anti freeze solution Gasket Set Opel Head Gasket Set identify if 10 bolt or 12 bolt type is needed Carb Gasket s Thick main gasket recommended amp thin heat shield gasket 1f installed Sealers Permatex High Tack Silicone RTV Optional Copper Coat Threadlocker Lock Tite Bolt One tube medium strength blue Cleaner s Pint of Acetone or Lacquer Thinner Brake Cleaner Spray also helps General Garage Supplies Hand Cleaner Lots of Rags Optional Tune Up Parts Points Plugs Cap Rotor Ignition Wire Set Oil Filter Check or Replace Thermostat Hoses Hose Clamps Belt s Vacuum Lines Inspect Your Engine Top to Compare Earlier 10 bolt style Opel 1 First thing that should be done is clean the engine and around the head This makes for an easier job and helps keep you from getting loose dirt and other debris in the engine SOS pads clean the inner fenders well Bula 2 Disconnect the battery Set the parking brake and block the wheels f PE ees 972 o not have 3 Drain the radiator Most often this is ose 2 bolis done by removing the lower radiator hose and catching the fluid in a wide low drain pan Some rebuilt radiators have had a petcock valve add
32. and wear during break in When used moderately at each oil change it has little effect on emissions equipment and greatly enhances the long term life of the cam j Conclusion m Myriad other lubricant companies and camshaft manufacturers have certainly addressed ic these issues and developed their own solutions but it was not practical for us to contact all E of them After hearing a recurring trend from those we spoke with we are confident that answers from most others would closely follow what was presented here We learned that current spec commercial grade oil like ROTELLA T remains a suitable off the shelf lubricant for Opel owners Other options include specialized lubricants like those from Brad Penn or to combine modern spec gasoline engine oil and an additive such as that from COMP Cams or Crane Cams While it s still recommended to follow your engine builder and or camshaft manufacturer s specific suggestions for break in and long term use Opel owners can rest easier knowing that a variety of solutions are presently available and after hearing what these companies have to say we are confident that we can safely drive our Opels without feeling as if our camshafts are living on borrowed time ZDDP CONTENT API Oil Designation Brand Year Zinc Phosphorous 1996 0 130 0 120 2001 04 0 110 0 100 2005 0 087 0 080 Shell Rotella T 2006 0 140 0 130 Pennzoil 20W50 Racing 2006 0 196 0 180 Above Quaker State Q Rac
33. art of the gasket and use a coat hanger or wire to hold the gasket while it is being sprayed or while it dries a few minutes to a tacky state prior to installation Contrary to advice offered in various places you should not use any other material or sealer on the engine block when installing a new head gasket Prep Gasket Surfaces Place thin line of RT V Silicone sealer at the junctions where the top of the timing chain cover meets the engine block as shown by white arrows in image at right Use a minimum amount of RTV as excessive sealer can migrate and block narrow engine oil passages Brush the rest of the of the timing chain cover with Permatex High Tack sealer IMPORTANT Place rubber o ring in depression on top of timing chain cover if you don t do this coolant will leak out and you ll have to repeat this entire process again Do NOT add sealer to the o ring 29 Place Head Gasket on top of block Line up and slightly depress the gasket on the 2 dowell or guide pins on the top of the block Also make sure all other holes in gasket are properly aligned to the block Opelclub com 3 2008 Cylinder Head Re Installation Rotate camshaft in the cylinder head until the slots in the cam are aligned oo ra Gri rea rea Cam Access Under a 30 31 32 33 33a 34 34a 36 37 38 near where the head bolts are installed about 4 TDC setting If this is hard
34. at GT owners always figure the grass is greener for the other guy who drives another GT transmission type While most conversions are from the 4 speed manual to the GETRAG 5 speed manual which was well wi covered in the August 1995 OMC Blitz issue there are still numerous inquiries from those who inquire about swapping among the stock Opel transmission types Frequently inquiries for automatic installations are for city drivers or their non shifter spouses while the higher performance crowd appreciates the 4speed manual Most of the time it s a good idea to acquire all the parts including some smaller but critical hardware components from a wrecked donor GT as time and costs can add up if you try to do this from more than one GT parts supplier ed eo For reference a summary from the Feb 1995 OMC Blitz list of the parts you ll need is reprinted below Converting GT to 4 Speed Manual Transmission Important New Clutch Pilot Bearing must be installed into engine crankshaft journal Consider also changing rear seal and shifter shaft seal s on transmission prior to install Transmission with GT Shifter Linkage different linkage than Kadett or Manta Transmission bolts 3 are 1 5 8 long and 1 is short 1 1 4 long to the Bellhousing Drive Shaft and internal thrust spring shaft is thinner than the automatic shaft Transmission Rubber Mount and 2x 8mm allen head attaching bolts A Transmission Mount Bracket lo
35. bracket to engine if connected at bottom of manifold Detach the intake exhaust manifold assembly bolts from the cylinder head If you have headers they have to be disconnected Hang exhaust manifold use wires or bungee cords towards fender Exhaust System Head Pipe at Manifold Generally it s not a good idea to try to detach the head pipe from the bottom of the exhaust manifold because the bolts usually are rusted in place and break when turned with a 13mm flex socket so removal is not advised unless necessary Unbolt the manifold at the head instead ig r Support Bracket A Brake Booster Hose thick reinforced hose B Valve Cover Hose to the thin outlet on V C C Distributor Vacuum Retard 1968 1972 Note C was relocated on 1973 intake manifold D Automatic Trans Modulator if equipped Original Air Filter Unbolts from fender mount Original Exhaust System Disconnect Rubber Donut Hangers aa L A Ea amp Opel GT External Engine Hardware Emission Controls 1969 Air Injection Reactor Pump Valves and Hoses Required years ago to be operational on a registered 1969 Opel GT they re now very rare The belt driven pump drove air through a pair of valves then into the exhaust manifold to more fully combust unburned fuel But in real life the horsepower robbing pump often froze and the metal hoses rusted solid at the manifold ports mechanics sawed these off
36. changes affected the way your company manufactures flat tappet cams Or has your company changed your recommendations regarding Break In procedures No not at all Our flat tappet camshafts remain a popular hobbyist choice and to ensure longevity we are recommending specific break in procedures using products like Brad Penn motor oil or such diesel specific oils as Shell ROTELLA T Mobil Delvac and Chevron Delo 400 We recommend that each lobe and lifter be thoroughly coated with our No 99004 1 Super Moly Assembly Lube and to combine said oil with an 8 ounce bottle of our No 99003 1 Super Lube Break in Concentrate After setting valve lash or lifter preload and priming the fuel and oil system start the engine and immediately begin cycling its speed from 1 500 to 3 000 rpm for 20 to 30 minutes If the camshaft requires dual valve springs we suggest removing the inner spring during break in Once the process is complete the camshaft should be ready for normal use What are your suggested oil change practices during normal use We recommend that the first oil change occurs within 500 miles of initial break in and then follow that with normal oil change intervals that include any high quality engine oil and at least 4 ounces of our Super Lube Break In Concentrate General Motors E O S General Motor s E O S anti wear additive containing a high concentration of ZDDP that s designed to protect the camshaft lobe and lifter against scuffing
37. cifically for break in protection but overall ZDDP levels will be and would subsequent testing has proven long term durability benefits for flat tappet cams that level be safe for engines requiring It contains a special blend of additives SE grade oils that replace some of the desirable i Response Unfortunately we do not have ingredients that the oil companies that specification have removed from modern oil and protects the camshaft and lifters against premature wear After this brief conversation speaking with STP s technical representative I regret to inform readers that I can not endorse using STP for ZDDP additives over other specialty products Shown at Right Typical Cam Shaft Lobe and Lifter damage a Crane Cams Cam Manufacture Ser Crane Cams has been a flat tappet camshaft manufacturing leader since the 7 early 50s and though the company has ventured into various other valve train and ignition related components over the years camshafts remain among its most popular products Like any camshaft manufacturer Crane Cams admits that today s oil formulation is an area of concern Of Tony Vigo Crane Cams Media Liaison and Technical Advisor it was asked AINE Is current oil formulation an area of concern for Crane Cams AEREE Yes the reduction of the zinc phosphorus compound ZDDP from most modern engine oil has definitely accelerated flat tappet camshaft amp lifter wear Have these
38. circulate as quickly during initial start up in extremely cold weather In these harsh situations 5W 40 synthetic is then an option Is there any chance your company could reformulate ROTELLA T in the near future and drastically reduce its high zinc content A point to remember is that zinc not only protects flat tappet camshafts against wear but also any high pressure metallic surface that relies on pressurized oil for lubrication such as the piston rings cylinder walls and rocker arms pushrods When oil can t carry the load zinc steps up and creates a chemical barrier and the high levels of zinc in commercial grade oil contribute to the fact that some diesel engines run a million miles or more I don t see us reducing the zinc content in ROTELLA T unless an organization like API imposes a lesser chemical limit on a subsequent category Note Rotella T is also recommended by the Porsche owners club 10W A0 MOTOR DIL If you re currently putting mileage on your classic vehicle and using the latest API grade SM oil you are almost certainly doing irreversible damage to your engine William C Anderson New Oils and Old Cars Old Cars Weekly 48 2007 08030 ZDDP Additive After 70 years of trouble free metal to metal engine protection the E P A is forcing ZDDP Zinc Dialkyl Dithio Phosphate which is Zinc and Phoshorus from domestic motor oil Our Opel engines were designed with conventional solid or
39. d specifications accuracy of your machinist s tooling and even the room temperature at the time of assembly these measurements can vary Therefore none can be guaranteed for absolute accuracy Camshaft Bearings Early 3 Bearing Head STD Housing Bores for Early 1968 1970 3 Bearing Cylinder Heads Opel Tech Bulletin Spec 2 07 Opel Tech Bulletin Spec 2 06 Opel Tech Bulletin Spec 2 05 STD Camshaft Diameters 1 Journal Outer Diameter 1 9266 1 9272 Haynes Manual 2 Journal Outer Diameter 1 9167 1 9173 Haynes Manual 3 Journal Outer Diameter 1 9069 1 9075 Haynes Manual Note Semi finished cam bearings require align boring for installation After pressing bearings in STD diameter specifications for boring bearings are 1 Inner Bearing Bore Diameter 1 930 1 931 Haynes Manual 2 Inner Bearing Bore Diameter 1 920 1 921 Haynes Manual 3 Inner Bearing Bore Diameter 1 910 1 911 Haynes Manual Camshaft Bearing Clearance Specification 001 003 Note Above dimensions apply only to standard sized cams amp bearings Service undersizes were sold by Opel Cam Bearings amp Journals in Opel Cylinder Heads are numbered front to rear Camshaft Bearings Delta Mark Early 3 Bearing Head STD Housing Bores for 1969 Delta Three Bearing Cylinder Heads Aftermarket Vendor Spec s Outer Diameter Delta Head 1 Front Journal 2 1069 Opel s bulle
40. d take note of which approach es you will take to this procedure prior to beginning work Recommended Tool List Do you have a 10 bolt early or a 12 bolt late style cylinder head You need to identify this to order amp install a matching style of head gasket 8mm and 12mm Serrated 12 point Bits Required Note You may also want a second shorter 12mm bit cut to 2 1 2 long to reach the harder to access passenger side head rear bolt on a GT Opel Head Bolt Tops Mi li Spark Plug socket Serrated NOT Torx 10mm 11mm 13mm 15mm 19mm Wrenches Special short handled 13mm wrench recommended for carburetor nuts Special curved obstruction 15mm wrench recommended for manifold bolts Allen Head 6mm socket bit or wrench if it s a 12 bolt cylinder head style 10mm 11mm 13mm 15mm 19mm 27mm or 1 1 16 3 8 drive sockets 13mm 15mm 3 8 drive deep sockets 13mm 1 2 drive socket 3 Extension 3 8 drive 3 8 drive Socket Wrench 1 2 Torque Wrench 1 2 breaker bar is also useful Later Model Opel CIH engines after 1972 had an extra pair of head bolts These can be seen at the front upper edge Gasket Scraper s or Sharp tip exacto knifes of the head They have 6mm allen heads Screwdrivers Flat Tip amp Phillips Various sizes Special Bits Required are about 4 5 8 long and bolt to 2 threaded Hard Rubber Mallet Hammer holes on the top of late style timing covers
41. dient in all quality motor oils for over 70 years The ZDDP Molecule RO J Se JOR Berd Mice n ee ee Why do I need ZDDP SS OR The EPA has put stricter emission requirements on new cars which have influenced manufacturers to remove ZDDP from motor oils Opel specified SE high quality engine oils and made specific mention to use detergent oils The modern SM grade oils have greatly reduced amounts of these Opel specified qualities ENGINE OIL RECOMMENDATION Use only high quality SE oils The chart below will serve for selecting proper oil viscos ity API Label cy me Recommended SAE Viscosity Number EGRET What do the oil grades such as SE SF or SM indicate In the API American Petroleum Institute Classification System S and C are the two basic application categories of oil S is intended for gasoline use and C is intended for diesel use A was the first grade in each category and resulted in SA and CA grade oils Each progressed farther o 4 80 8 108 up the alphabet as new grades of oil were introduced The Temperature Range Anticipated Before Next Oil Change F newest grades are SM and CJ i respectively Aren t the newer oils better than the older oils Historically every new grade of oil introduced since the 1930s was better than the previous grade and could be considered improved with one exception The original SA grade was straight mineral
42. e 3 cover bolts in place add the fuel line bracket too torqued but a gap between the inside of the Then use a feeler gauge to correct installation of the cam cover plate is adjusted with a feeler gauge nylon bolt to a 004 008 gap If this measurement _ is out of range you may need to remove and adjust the A Nylon Bolt sea ve H ad re triangular shaped front cover to achieve this gap it limits camshaft movement Assemble the intake exhaust manifold assembly Above Two bolt lengths onto the 2 pins on the side of the cylinder head Early 10 bolt style is short Clean 9mm threads of these bolts then start the 4 Later 12 bolt style longer interior bolts Note that the thin washers are on the 2 outside bolts where the exhaust manifolds are held exclusively You may need to lean a bit on the engine to tilt it to get these bolts lined up to start in the holes Torque these 6 bolts in the sequence shown Use 15mm If rocker nuts were loosened in step 9 or if deep socket Vi valves were serviced Perform a valve adjustment to perform Instructions are in the OMC Blitz issue of June a Valve 2006 And are also available free online in the Adjustment a tech tips section of www opelclub com This adjustment procedure will require use of a 15mm deep socket on the rocker nuts and engine rotation using a 19mm wrench Manifold Assembly bolt torque sequence Install Valv
43. e and let cure 24 hours Lift engine easiest to r eplace all seals when the sealer sparingly T and transmission as an attached unit into GT transmission is out of the car if needed sluggish shifting slipping out of gears but can cause total failure Apply sealer Detent Kickdown Cable on tube Handle carefully Brittle plastic housing cracks causing continual Replace cable above o ring replace o ring seal and adjust to pedal per service manual procedures when needed but below _ lip Mount Bracket O Ring Seal goes on lower 7 groove of tube Pedal Attached Adjusting Nuts OMC Blitz Reprint Cylinder Head R amp R The original February 1998 OMC Blitz article on this subject is described as having been received without attribution although it reads very similar to one credited to Charles G on the OANA web site Because many Opel owners perform these procedures when they swap cylinder heads or reinstall theirs after servicing or installing larger valves this subject is re introduced here Although the 1998 article was well written it s recapped here to revisit some of the steps which could get you into trouble if you followed them verbatim and to revise reformat or simplify others Many new illustrations are also added This is in support of the goal of the original article which was to avoid simple mistakes and time consuming wild goose chases Please read all the instructions an
44. e Cover gasket It s a good idea to use gasket sealer to seal the lower surface while sealing the upper surface is optional makes it easier to remove in future if top isn t sealed Permatex Ultra Blue or Ultra Black works good here Feel around the back of the head to make sure this gasket is in correct location Attach all exterior engine mounted components Wires hoses spark plugs air cleaner etc Then reconnect all electrical wires If you use a Weber air filter make sure all bolts are snug or use blue loc tite so they won t not shake loose Refill engine oil Refill radiator will coolant fluid Reattach battery Opelclub com 3 2008 Restart car and Monitor engine performance If you installed a new camshaft and lifters use break in lubricant and perform important break in procedure this requires running engine continuously at 2000 2500rpm s for no less than 15 uninterrupted minutes If you performed quality work and used a modern head gasket such as the printseal design there should be no need to re torque cylinder head bolts If re machined components were installed in head or engine it s a good idea to change the oil and filter within 100 500 miles of initial start up OMC Article Reprint Engine Assembly August 1989 Blitz There are specific and important steps involved when reassembling freshly re machined parts into an Opel block To complete an engine rebuild correctly they re elabo
45. e passenger side i H I ji threaded ports Other Opel automatic transmissions have linkage on the driver s side RE no Y unique GT A T radiators with bottom fluid tank Automatic Transmission Drive Shaft and Thrust Spring short GT length Automatic Transmission Rubber Mount and 2x 13mm head nuts Automatic Transmission Mount Bracket shorter than the 4 speed Automatic Transmission Flex Plate with all teeth intact and undamaged Flex Plate Bolts 3x 15mm to the Torque Converter Automatic Transmission Shifter with Neutral Safety switch and linkage Speedometer All GT s Automatic Transmission Interior Plastic Shifter Console with PRND21 Plate with an Auto Trans Separation Loosen where metal Automatic Transmission Metal Hoses for fluid from the transmission use W 1062 calibration hoses meet rubber flex hoses Automatic Transmission Rubber Flex Hoses for fluid to the radiator Automatic Transmission Radiator for a GT has trans cooler ports at bottom Metal hose from vacuum modulator to intake manifold vacuum fitting Rubber connector hoses for long metal vacuum hose Intake Manifold port fitting with extra vacuum outlet for A T vacuum hose Detent Cable a k a kickdown cable Detent Cable bracket on engine cross member near accelerator pedal Automatic Transmission Brake Pedal wider than 4 speed pedal and cover Pedal Bolt shorter than 4 speed bolt Automatic Transmission Wire Harness from neutral safety swi
46. e reproduced without the ex pressed written permission of the OMC Views expressed are not necessarily those of the officers or members of the OMC ADVERTISING IN THE BLITZ CLASSIFIEDS CARS amp PARTS FOR SALE OR WANTED Up to 50 words plus name amp phone and a single photo 1 Month 6 00 3 Months 15 00 6 Months 23 00 12 Months 39 00 3 Free Ads per year for members BUSINESS ADS SUBJECT TO CHANGE Half Page 35 for 1 month Full Page Temporarily Unavailable Insert 120 for 1 month Business Card 60 for lyear Color Back Cover Temporarily Unavailable Send Ad Copy and payment payable to Opel Motorsport Club to Blitz Editor CHANGE OF ADDRESS To minimize delays please provide the OMC Treasurer with address changes at least one month in advance ON THE COVER Zen and the Art of Opel Repair Caution Only replace 41 screw with a fastener of equal strength and torque to factory specifications OMC Officer s Message This month s issue long tech tip is the continuation and companion to Sept Oct 2007 s Engine Rebuild article An addendum with clarifications corrections is also forwarded and should be kept with that earlier issue to avoid undue confusion with future reference Results of the belated OMC Officer s Election for 2008 are on the following page The transition will evolve behind the scenes so that projects in progress can be completed and released without undue de
47. eavy transmission drops unevenly Also unscrew the 2 flexible fluid cooling tubes to the radiator It s easiest to do this where the metal and rubber hoses couple s Torque Converter Remove end of the long thin metal hose from the manifold connection Bolts 3 Raise vehicle and support securely on sturdy jack stands Have special heads Block rear wheels Have to rotate flex Detach the speedometer cable plate to remove Detach the detent kickdown cable from throttle linkage and engine support Flex Plate Teeth Remove attaching nut and shifter linkage from transmission housing Inspect for wear Worn out teeth cause Detach driveshaft at rear universal joint remove u bolts and let hang loud screeching noises when car is being started Loosen the lower bolts on the bellhousing dirt shield plate Remove the 3 15mm torque converter bolts rotate flex plate to access each A o S a os me Use 15mm flex head upport transmission with jack then unbolt cross member from vehicle yo XN NTI eee Place a wood block under the rear of the transmission as a temporary support lt L AS g SUCKER Verna io Teach a upper bellhousing bolts Wear gloves and with a helper pull and remove transmission Lowering with an automatic transmission jack is strongly recommended UNDERCAR Parts to Detach driver side Cooling hose Fuel Line mount Detent kickdown cable at linkage Speedometer Cable
48. ed for convenience Although the Opel factory service manual and the original version of this article tell you to also drain the engine block by removing the small 10mm square head threaded plug located above the oil sending unit on the block this isn t a good idea typically over 30 years of corrosion on threads of this plug have seized it in place 4 Drain the Oil at the drain plug Changing the oil after completing this procedure is highly recommended contamination by dirt or coolant is almost inevitable 5 Remove the Air Cleaner Also move out of the way Setting an Opel CIH Engine to 4 TDC the heater hoses vacuum lines fuel hose throttle linkage or 7 ji 1 Rotate Engine cable and the electrical leads for the thermostat oil sending i l with all 4 spark plugs removed 2 unit and the spark plug wires and spark plugs themselves Sa he Gann cana 6 Set the Engine to 4 TDC Perform instructions in box at right Neutral gear use a 19mm wrench ge A E 6a Another tactic to find 4TDC is placing a screwdriver into the tO turn the crank 4 cylinder spark plug hole and turning the engine until you pulley bolt feel the piston rise to TDC including rotating the engine back Cae n rise l til th and forth a bit to find exact middle of the piston s upper travel Pe ae 7 Remove the Intake Exhaust rotor points at manifold You can either just 42DC location unbolt the manifold from the Opposite
49. eds some work to lights also 2300 Buyer will have the oppurtunity to purchase a second Opel Gt that I have for parts Its a 1971 that has complete engine and trans Some interior parts and some usable exterior parts No title on the 71 Good glass body is rough Will sell for an extra 400 Any questions please email me jongraver77 at hotmail dot com OPEL GT SOURCE Open Mon Fn Orders 1 800 673 5487 m ves Info 1209 928 1110 gt m a omen Fax 209 928 3298 10am 7pm Central Web www opelgtsource com 1lam 8pm Eastern Emal OpeGTS OpdGTSourcecom cr Sy Catalog 4 00 Mailing Address P O Box 4004 Sonora CA 95370 USA UPS Shipping Address 18211 Zeni Lane Tuolumne CA 95379 USA New Reproduction Used amp High Performance parts for Opel GT Manta A 1900 Sedan Wagon amp Kadett B Direct Importer Same Day Shipping policy We accept Visa Master Card American Express and Discover Serving the Opel Community Since 1987 YOUR ONE STOP OPEL SHOP VISIT OUR WEBSITE WWW OPELSUNL COM 1310 N TAMARIND AVE RIALTO CA 92376 PHONE 909 355 OPEL FAX 909 355 6557 COMPLETE PARTS amp SERVICES FOR ALL OPELS FROM 1960 TO 1980 If You Bought It Somewhere Else You Paid Too Much
50. engine additive depletion generous dose of anti wear additives experienced during Optimal engine operation and not Severe primarily zinc dialkyl dithio phosphate Service operation as described above ZDDP Absorbance Area Brad Penn Industry experts have long considered Pennsylvania grade crude oil among the best in the world and one of the most popular engine oils refined from it was Kendall GT 1 The American Refining Group now operates the Bradford Pennsylvania based refinery Brad Penn s Penn Grade 1 PG 1 is available as a partial synthetic or conventional engine oil and in varying viscosities Of Director of Branded Lubricants Sales and Marketing Dick Glady it was asked Are Brad Penn s Penn Grade 1 products intended for use with flat tappet camshafts Yes PG 1 has been evaluated by a number of camshaft manufacturers and is now recommended by many for flat tappets a k a solid valve lifters We add to it a high concentration of ZDDP and our additive package the result is high quality race oil that offers outstanding anti wear and anti scuffing protection for flat tappet cams We also offer Penn Grade 1 Break In Oil a specially formulated 30 weight oil developed for flat tappet camshaft break in and features enhanced levels of ZDDP Is there a specific amount of ZDDP that your company feels is the minimum required for flat tappet camshafts Our typical ZDDP content is 1 200 ppm Our lubricant is
51. er cleaning materials and handy beverages Use a notepad and sandwich baggies to identify and bag removed bolts for easier reassembly later Allow extra time to be able to deal with unplanned obstacles like hard to remove parts rusted bolts etc Have a radio or good music source nearby to keep the working atmosphere positive Have a list of phone numbers for local auto part and tool supply stores handy just in case you need them The Werkhandstatbuch 1960 s GT German service manual illustrated another approach including couple of special tools for owners to construct A wood engine holding tool for support and a metal frame to hold the engine when it was to be wheeled out on a jack shown below We DO NOT recommend this approach as safety could be compromised by shifts of the unbalanced engine weight because the vehicle is not as steady when it s placed on 4 tall jack stands Left to Right Vehicle suspended about 3 feet above ground on 4 stands Wood engine holding tool and engine wheeled out on steel support frame Opelclub com 3 2008 Opel GT Engine Lowerin This procedure presumes that the transmission and attached parts have already been detached from the engine and possibly removed from the vehicle It also presumes that many parts attached to the engine hoses wires brackets manifolds alternator sway bar etc have been detached or removed as well Not Recommended Alternate Lifts
52. escape You need to pull the bellhousing This only applies to original Opel 4 speeds Raise vehicle and support securely on sturdy jack stands Block rear wheels Detach shifter from transmission If it s in the way unbolt parking brake cable Disconnect clutch cable from clutch arm and pull through engine support bracket hole Pressure Plate Surface Use 15mm flex head socket for hard to reach upper bellhousing bolts Disconnect speedometer cable Machine both flywheel surfaces Disconnect 2 wires to reverse switch evenly if uneven or grooved Detach driveshaft at rear universal joint Pressure Plate 4 13mm Bolts remove u bolts and let hang Torque to 18 ft lbs NOT 33 ft Ibs Loosen the lower bolts on the bellhousing l l dirt shield plate Pilot Bearing install in correct direction lip seal out Support transmission with jack then unbolt l E w l PP J With writing visible on the seal side cross member from vehicle Place a wood block under the rear of the Flywheel 6 Bolts transmission as a temporary support Hold flywheel in place to remove Remove drive shaft some gear oil will pour out OK to use impact wrench to remove l Pull transmission shaft clear of bellhousing Flatten edge of 6 point socket for better bolt grip Use torque wrench ONLY to install to 43 ft Ibs CAUTION WARNING Transmission ts heavy and can injure you when dropped especially with outstretched ar
53. g moistened with some acetone or brake cleaner spray use only in a open well ventilated area with no flames or heat sources nearby The goal is to have the top surface of the engine block clean amp dry Use gasket scraper s and cleaner on the top front of the timing cover until it is also clean and dry Remove and discard coolant o ring here F i o Wick Out Oil from Head Bolt Holes Prep Head Bolts You can soak them in a container filled with a liquid solvent wire wheel them or spray with carburetor cleaner and wipe dry To assure accurate torque measurements you can also clean the threads with a wire brush or wheel and cut threads with a die tool Prep Head Gasket Gently lay it on the block and inspect how well it sits at the junction where the timing chain cover meets the block especially If you have a 10 bolt type head gasket It s a good idea to use a razor blade or exacto knife to trim just a thin sliver of the top of the vertical timing cover gaskets where they protrude on the block to allow the head gasket to seal better at the timing chain cover top junction where oil often leaks from Head Gasket Make sure underside of Front Gasket area sits flat where underside contacts upper surface of the timing cover As shown below add sealer here too If you choose to use copper coat spray optional generally not required on the head gasket mask off the front timing cover p
54. he people who take over the open leadership positions maintain the same high standards that the present administration has done over the short time I ve maintained membership in the club For someone like me the magazine IS the club The articles on the history of the GT and the maintenance articles are gold to me Nowhere else can I get this information please refer to paragraph one Your maintenance and repair articles allow me to safely make repairs to my car which in turn allows me to avoid the 80 dollar an hour repair shops that don t have a clue as to what the car is in the first place I can only hope that the exceptional high quality of the Blitz that I have seen since I signed on in 2006 continues on The only thing I got from the new Opel GT issue was the deep love that you people have for the car and the company It was not lost in my eyes the commitment it took to maintain the classic GT s everyday during the debut It s always the behind the scenes work by the troops that wins the battles and you guys pulled it off A job well done Keep up the good work and I look forward to the next adventure with the OMC Sincerely Mike in NJ I am renewing membership gladly this year for only 45 I am sorry to hear the Blitz newsletter may be in jeopardy for the lack of support I wonder if it might be insensitive to anyone out there 1f OMC could afford to pay a reporter newspaper person to take on the job for compensation I feel 45 is a
55. he same sequence as in the diagram If you have a 1972 or later cylinder head use a 6mm allen head wrench to torque the front 2 vertical bolts to 17 ft Ibs 35 Torque each serrated head bolt in sequence to about 20 ft lbs with a torque wrench then torque each bolt in sequence to about 40 ft Ibs then torque each bolt in sequence to about 60 ft lbs then in sequence to a final 72 ft Ibs using the sequence shown in the diagram which helps the head compress the head gasket evenly amp firmly Again verify the engine is at 4TDC by checking where the flywheel ball lines up with the pointer on the passenger side rear of the engine block If not rotate with a 19mm wrench on the crankshaft bolt until the ball lines up with the pointer Re Place camshaft sprocket gear to camshaft using the dowel pin to assure its and Verifying 4TDC aligned Then place a rag below the camshaft sprocket gear so loose bolts won t drop into the engine Use a bit of spray cleaner to clean out the holes in the camshaft then clean and add a touch of anti seize thread locker to the threads of each of the 3 bolts and start threading them onto the camshaft Tighten them a little at a time so the gear tightens flat onto the camshaft Final torque spec is to 18 ft Ibs Tighten tensioner bolt large 1 1 16 or 27 mm head on lower timing chain cover see diagram at left fully into the side of the timing cover 40 Verify timing mark
56. ide copper braid 4 Temperature Sender Connected by blue DIStrIDuUtor Original GT s have a green 18 gauge wire that 18 gauge wire to the connects to the negative output of the ignition coil dash temperature It is important to clean amp sand the condenser gauge Most senders mount area for good conductivity amp grounding are 13mm early models are 17mm GT senders have a 18 black colored insulator Mantas are white Many GT s have the replacement Pertronix nition module which has 2 wires 1 red amp 1 black each connects to a terminal on the coil Other ignition kits have additional wires to an external control module Opel GT Manual Transmission Clutch Detachment Use Flywheel holding tool Option Decide if you will detach transmission from engine in advance grips teeth stops rotation Arguments for detaching The transmission adds unbalanced weight WHINE Hy wnceh bolts and restricts side to side engine movement during drivetrain removal Snappy brand tool shown Argument against detaching Process is tricky and time consuming g P ei en Ae ene You need to jam flywheel teeth with a screwdriver or other tool to unbolt each of the eee flywheel s 6 bolts Best to use is an air wrench amp 6 point socket with flattened front edge You need to pull the 50 pound gearbox Wear gloves and keep body parts away from the gearbox bottom when it is dropped also expect some gear oil to
57. ing Oil Mobil Delvac Quaker State Q Racing 2006 0 200 0 180 1300 amp Chevron Delo 400 diesel engine oils Opel GT Drivetrain Removal An 1989 OMC Blitz article just presumed that an engine was either serviced on the car by removing the head and oil pan or that the reader had removed the engine completely from the car As anyone who s worked on Opels knows It s a lot easier to just write that than it is to do The factory service manual notes that it was only possible to lower a GT engine to the floor This isn t true as owners have removed the GT hood and lifted engines out of the car but experience has shown this can be risky difficult and more trouble than it s worth If for some reason you absolutely have to lift it out it s best to remove the cylinder head and detach the transmis sion first Even then you ll have to dangle an unbalanced 150 pound engine a minimum of 32 high to clear the vulnerable metal of the front end of a GT body We do not advise using unsecured garage roof beams as attaching points for pulleys or cable lifts even when you insist on this approach Lowering the drivetrain from the car is safer and much more easily controlled From there the Opel is raised so that the engine transmission combination can be pulled out from under the car The best device for this procedure is a full size 8 lift 4wheel garage rack 1f an associate has access to one by all means ask for permission to use i
58. ission to the Blitz on my turn signal problems and probable steering column replacement with photos once it gets above 40 degrees f Pll start work Keep being the money changer Thank You for your efforts in 2007 Great year for the Blitz Comments Some club improvements have already been developed new member s packet updated roster spreadsheets and others are in the pipeline more tech tips online upgrades email newsletter results of the incentive offer for articles When these projects are rolled out by the administration of 2007 this hopefully will allow our new officer s corps to start fresh and focus on OMC s challenges of 2008 Letters to the Blitz Editor In reply to your letter requesting my e mail address Unfortunately I am not on line nor do I have an e mail address I guess I m one in a minority who have not com pletely embraced the electronic age Although I type this on a Sony Vaio computer I bought in late 2000 I never took the plunge to attach that phone line connection to it While I m typing away here I just want to commend what you Gil and everyone else involved did in basically running that new Opel GT introduction in California General Motors owes you guys a huge debt of gratitude and then some as far as I m concerned I ve always been curious as to the history of the GT and just how close it s design was to my favorite all time show car the Mako Shark and it s p
59. ivot point is bolted to the transmission case Clutch Return Spring is 4 1 2 long connects around the reverse switch bracket 6 Angle Drive Speedo Gear Pe Drain Pan p geoon Remove to drain gear oil Ball Spring pops out of eS Y Inner Seal Passenger Metal Housing 7 a Outer O Ring Speedometer Gear Early Model details above Located on passenger side of transmission Speedometer Gear is plastic and brown in color Note Metal gear housing is held in with a metal pin Reverse Switch To remove use a flat screwdriver blade to lever the head of that pin Mountson slowly straight away from casing as the fragile head snaps off when twisted Once the body is exposed use smooth pliers to pull the rest of the body out If stuck use penetrating oil like WD40 bracket on driver s side of casing Speedometer cable attaches to gear via a metal angle drive which has a short internal cable piece that can break The angle drive end can also loosen causing the speedometer needle to jump up and down at speed on the road Replace inner seal amp outer o ring when cable or angle drive leaks gear oil Opel GT 4 Speed Transmission Later Style 1971 1973 Speedometer face on 1971 1973 GT s reads W 1062 calibration Note The W 1062 calibrated speedometer was also originally installed on all 1968 1973 GT s with automatic transmissions and adapts for the 5 speed GET
60. lays The energy typically brought in with new officers will also help us to refocus OMC into interactive growth areas We re also encouraged by some of the responses to the requests for greater interaction from OMC s membership The more printable materials members submit to us the lighter our workload which allows us more time to complete longer range projects like scanning all the old Blitzes So keep them coming Looking back a lot of hard work has kept OMC progressing over the past 4 years since our late Editor John Seaman passed away While the tone of civility has decreased somewhat that time frame has also seen marked improvements in the club website and in The Blitz OMC s name has been more widely represented by the rotating designation of National Events and our officer corps has received increasing recognition by GM Opel and the automotive reporting media Financially we re in the black In the spirit of what OMC s founders did back in 1980 we ve solidly rebuilt and maintained the club s foundations so that they re ready for a handoff to the next generation of leaders Just as GM Saturn now views Saturn Opel the future offers promise particularly once OMC evolves its means and quantity of member interaction to the demands and satisfaction of today s Web 2 0 society Keep These Blitzes Handy in case you need them later Read Elsewhere from H emming s Sports and E xotic Car
61. m crank and bearing and gently slide the piston rod assembly up an inch or so in the cylinder Lube the bearing halves in the rod and rod cap push rod back down on crank and reinstall rod cap Reinstall bolts and torque as described above Check to make sure that crank can still be rotated You will probably want to replace the front pulley bolt to make turning the crank easier Repeat for all other pistons Note Refer to prior instructions in Sept Oct 2007 OMC Blitz on ensuring accurate torque measurements by tapping out holes and using a die to cut bolt threads and lightly lubricating bolt threads prior to installation Machining Specifications Line boring of engine ae eae S heads and blocks A critical step in rebuilding a 1 9 engine is re machining valve Te ae eek ens is best done by shops and bearing surfaces Many service manuals didn t include equipped with all required specifications so we ve compiled some here too expensive precision cutting machines Note Your rebuild results are only as good as your machinist s ability to adapt to real world part availability realities The information below is best used as only approximate reference data from a selection of available materials as indicated Opel 1973 factory service manual Buick tech bulletin aftermarket manuals part vendor catalogs etc Depending on your engine part s wear whether your replacement parts were reproduced to exact factory designe
62. me that key anti wear additives had been reduced from most of today s oils and that they were leading to camshaft lobe and lifter failures He strongly urged me to purchase a few bottles of Comp Cam Camshaft Break In Oil Additive and use it to not only aoa in the new engine but to keep using it with each oil change This led me to do some research on my own and determine the validity of his claims To my astonishment I found this topic to be a hot button issue and a cause for great concern by most car owners The reformulation of engine oil to meet modern emissions requirements was causing problems s for many vintage car owners cam and lifter manufactures engine builders and owners alike This topic was discussed by Porsche owners MG owners Chevy and Ford owners etc I was happy to find that many oil companies W were aware of these problems and have begun to address them In the following pages I have what industry experts had to say on the topic Wiel they were doing to help us and what engine oils amp oil additives they recommended The list is not intended to be exhaustive but should give our readers a good overview I also encourage our readers to further educate themselves on this topic Dennis G Amsoil AMSOIL was the first company to market fully synthetic motor oils for all types of internal combustion engines Its first gasoline engine offering was released in 1972 which spawned an entire industry AMS
63. ms Wear gloves amp have a helper assist you to pull it out of bellhousing and lower it onto block Clutch Return Spring Short Style 1968 70 connects clutch arm to reverse switch Reverse Switch Gear Oil Fill Plug Driver s Side either 13mm head or 8mm hex key bit insert Transmission Bellhousing Bolts Short 1 1 4 Lower Right bolt Use curved 15mm obstruction or C shaped wrench to access and turn Top 2 1 5 8 long bolts Use 15mm socket w ratchet extensions to reach Factory Torque Spec 32 ft lbs amp Opelclub com 3 2008 j Early Model GT 1968 1970 Transmission shown T Passenger Side Short 15mm bolt location Opel GT Automatic Transmission Detachment Dipstick Tube Mount Bolt Option Decide if you will detach transmission from engine in advance Eacation Arguments for detaching The transmission adds unbalanced weight DEE and restricts side to side engine movement during removal s Center 6 bolt area Argument against detaching Process is difficult and time consuming Check for cracks Remove torque converter s 3 bolts by rotation while under car Some models also have a metal Torque converter tends to hang up on pilot shaft during detachment spacer cine here Transmission removal can be very messy lots of fluid runs out This can also be dangerous use gloves and keep body parts away as the shaft binds up until the h
64. n 360 426 9267 Rocky Mountain Opels Security CO Contact Branston DiBrell Jr 719 391 9421 dibrellb at rmi net San Diego Opel Motorsport Club Contact TBA when available Texas Opel Club Leonard TX Contact Rodney Killingsworth 903 587 9640 Tyrodk at fanninelectric com Carolina Opel Club Contact Roy Bell 704 782 1866 E mail CarolinaOpelClub at aol com We chose to use at in place of for spam President Elect Paul H Vice President Secretary Matt N Treasurer Dick Counsil 818 248 5504 Blitz Editor Guest Activities TBA Webmaster Rich The Blitz SEND EVENT INFORMATION TECH TIPS PARTS INFORMATION LETTERS CHAPTER ACTIVITY ANNOUNCEMENTS ADVERTISEMENTS AND ALL OTHER ITEMS OF INTEREST TO Opel BLITZ Editor P O Box 4004 Sonora CA 95370 4004 USA Deadline At Discretion of OMC Editor Submissions will be accepted either typewritten on Microsoft Word Publisher or Works compatible disk or e mailed to the Editor mantal6v yahoo com Drawings or Photos accepted and encouraged Contributions to the Blitz will be published on a space available basis The Blitz is the official publication of the Opel Motorsport Club OMC Published bi monthly Circulation is limited to club members and prospective club members All submissions be come the property of the OMC and will not be returned Articles photographs drawings technical tips and other materials appearing in the Blitz may not b
65. nch and that s not very much space New bearings should be installed if bearing clearance is not within specifications Excessive taper of the bearing journals Opel Factory Spec s Maximum Taper of both Main Bearing amp Connecting Rod Bearing Journals 0004 inch indicates that a new or reground crankshaft is required Reference 1973 Opel Factory Service Manual Additional Bearing Installation Notes In the December 1989 OMC Blitz Blaine S added that main bearings can be modified just after they have been measured with plastigauge and heve been verified to be within clearance specifications At that point Blaine noted that the bearing shells that have been seated into place will have a slight mis alignment between the oil galleries holes in the bearing shells and the holes in the bearing journals Bearing Shell He suggested using a small 1 8 rat tail file to remove any bearing materials which blocked any part of an oil hole Oil Holes He noted that the softer bearing material will cut easily but not to cut the harder metal of the journal beneath it Blaine recommended then removing the bearing shells and deburring them Blaine also suggested checking rod bearings too and although he noted their smaller bore holes are generally better aligned to the bearings that they could be corrected if needed using the same general procedure Piston Installation Important Pistons must be installed before using plastigage t
66. nformation MEETINGS The OMC meetings are as announced at varying locations Please consult the OMC Blitz calendar or OMC website to find out who is hosting the next meeting or event OMC is on the Internet The site features Club News Event Coverage Tech Tips OMC amp Opel History features and much more Visit us at www opelclub com Other Good Opel Sites www opelgt com Website of the NEOC Includes a Tech help Bulletin Board Classicopels yahoogroups com Subscribe to this useful e mail posting site http clubs hemmings com frameset cfm club oana The OANA Website JoinOMC opelclub com Regional Chapters European Chapter Netherlands Contact Louis van Steen 011 31 297 340 536 please take note of the time zone before calling fast6Ogt at yahoo com Florida Chapter Coral Gables FL Contact John Malone 305 443 8513 Michigan Chapter Contact John Brooks 616 233 9050 ext 12 Johncinquo at hotmail com Mid Atlantic Opel Club Richmond VA Contact Charles Goin 804 379 9737 cgoin at mindspring com New England Opel Club Swansea MA Contact Gary Farias 508 679 2740 Gary at opelgt com North American Opel GT Chapter Chicago IL Contact Jim Toler 630 964 9797 Northern California Chapter Sonora CA Contact Gil Wesson 209 928 1110 Opelgts at opelgtsource com Ohio Chapter Columbus OH Contact Larry Shal 614 861 1565 Pacific Northwest Chapter Shelton WA Contact Paul Kama
67. nger than automatic trans bracket amp 2x 13mm bolts W o a ec ee eee oe fa Transmission Shifter and smooth metal connector pin with C clip lt a Release Bearing Shift Boot Sp Brake Pedal narrower than automatic transmission type with Rubber Cover T Clutch Pedal oo Clutch Disc Pedal Attaching Bolt to interior firewall longer than automatic transmission bolt Pedal Bolt Support Bracket found on 1972 1973 GT s attaches to engine firewall Always replace with quality new clutch parts Throttle Linkage Rod to Accelerator Pedal doesn t have external spring to avoid re doing the labor intensive process Bellhousing and 6x 15mm head bolts to engine block Bellhousing to Transmission Paper Gasket a critical part Bellhousing lower dirt shield metal plate with 6 13mm bolts Bellhousing Ball Stud Bellhousing Front Cup Seal Clutch Arm Clutch Arm Rubber Boot i Clutch Release Throw Out Bearing a Lever DE f Clutch Cable Hardware at the Firewall Clutch Bearing Release Sleeve Install new wave washers TT Clutch Disc i as shims on trans linkage a wa mm i ms A a anta Sleeve Round 2 Thic Clutch Pressure Plate with 4x 13mm head bolts to flywheel Clutch Cable Opelclub com 3 2008 Clutch Cable Hardware at Firewall Metal Sleeve size varies with GT vs Manta Clutch Arm Spring 4 1 2 long on 1969 70 GT s 10 1 2 long on later GT s Metal Washers Rubber Bushings E Clip Note Add a 1 diameter hose clamp
68. ngine block as shown in diagrams Raise engine slightly Engine Cross Member Rectangular Shims were installed on each side on US GT s between cross member and sub frames These are sometimes Unbolt Engine Cross Member replaced by sway bar mount J brackets 6 Remove the two 13mm side mount bolts that attach at the side arms Remove clutch cable and make sure exhaust heat shield isn t in the way Side Mount 13mm bolts 5 Remove wood block and hydraulic jack from under the engine 7 Carefully remove the 6x 15mm bolts 3 bolts per side that connect the engine cross member to the sub frames of the car Cross member will drop to the floor after it has been unbolted Lower Engine then Raise Car 8 Use cherry picker lift to steadily lower engine to plywood board or dolly do not use a mechanics creeper as the wheel mounts will break To clear front suspension move engine rearward a bit Detach chain Clutch Cable routes through hole 15mm Mount Bolt Locations 3x 15mm bolts on each side of cross member Opelclub com 3 2008 9 Wrap chain around front suspension cross member but not the rack pinion then use cherry picker to raise vehicle a minimum of 30 inches 10 Slide out engine by pulling on an attached rope from under vehicle o Dashed Lines Shows locations of extra 11 If engine is to be stored drain coolant then prevent damaging dirt front facing plates on 1973
69. o check your rod bearing clearances Double check the rings on each piston to insure that ring gaps are staggered from one side of the piston to the other and that rod bearings are properly seated Starting with number one piston turn the cranks so it is at its lowest position Bottom Dead Center Dip the piston in clean motor oil making sure that all rings are covered and that the piston pin gets lubricated Drain off excess oil then place piston ring compressor over the rings and carefully tighten the tool Be careful when handling the ring compressor since your hands will be slippery and the tool can easily cut you Do NOT lube the rod bearing yet Opelclub com 3 2008 Place piston into cylinder making sure the notch in the piston top faces to the front Use the handle of a hammer or equivalent to GENTLY tap the piston down into the cylinder If you encounter resistance it probably means that a ring had slipped out of the compressor if you try to beat the piston in you will break the ring and or piston Reposition the ring compressor on the piston and try again Seat the rod on the crank journal and lay a short strip of Plastigage in place Install the rod cap tang to tang install bolts and torque in place in three steps to 36 ft Ibs Again don t turn the crank remove the rod bolts and again check the width of the smashed piece of Plastigage Rod clearance should be between 0006 and 0025 If OK clean Plastigage fro
70. of Grand Prairie Texas adapted their kit for the 1969 Kadett 1 9 to fit the 1970 modelyear Opel GT The discontinuation of the 1969 only A I R emission control system left available space on the passenger side of the engine for mounts and a compressor Significant Buick dealer sales of ARA units for 1970 GT s led to GM s development of their own air conditioner system for the 1971 modekyear GT When removing cylinder heads or complete engines with a c installed it s important to detach the belt remove adjust able idler arm pulley and unbolt the compressor Unless you have a R 12 refrigerant recovery system on the premises do NOT twist or disconnect the pressurized hoses Instead wrap compressor with a spare towel and securely set it aside For more Opel GT A C system information including ARA installation diagrams consult the May 1995 OMC Blitz A R A Air Conditioning System Schematic View at Front of Engine Visual identification of an A R A system on a GT is by the square gray box York F206R their 6 Upper Mount Bracket mini compressor on the passenger side of the engine Another distinct difference is the design of the center console around the shift lever for the vehicle interior Tensioner Pulley Side Bracket to Engine Side Rear Some hardware like a metal fan blade and bracket designs varied between 1970 72 amp 1973 year kits Compressor Bottom Mount to Engine
71. oke Wire Optional firewall routing shown Loom 3 wire alternator to regulator Opelclub com 3 2008 Connected with 2 6 Ignition Coil light blue green striped i Negative Terminal 18 gauge wires Green 18 gauge wire 66 99 nn n n DN G screw terminal connects to condense i d points is to the dash oil gauge IE DR WR slide on is to Opastputon the warning light Green 20 gauge wir connects to dash tachometer gauge Goses 2 Carburetor with Standard on 1973 GT s and a Electric Choke popular choice on replacement Weber carbs Choke is powered 7 Voltage Regulator 8 Al by switched 12 volt source at fusebox not from ignition Loom A 3 wire loom connects coil by an added wire usually all 3 posts on the voltage regulator run along the firewall except to the alternator on 1973 s which is white black Amp Gauge A Blue White striped wire connected to the striped 12 gauge wire with 5 passenger side horn inline fusible link branches off the D red wire and connects to the dash 3 Ground Strap Bolted to the block and amp gauge passenger side chassis Upper Arrow GT Underhood Wiring Schematic o Wiper motor to original 1970 1973 Harnesses Shown without Battery Cables Main Loom Connects thru firewall grommet to fusebox Squares show where wires exit a loom Down Arrow runs along upper fender lip Wire loom to headlights horn front
72. on top of the block below the 4 spark plug hole amp lever a tang about 1 right extending from underside of the cylinder head There are other places you can pry Driver s Side Rear from as well but do not pry at a surface which extends into a cylinder such as at a spark plug hole as that could cause internal damage a Never pry directly where the underside of the head meets the Metal Bar top side of the engine block as marks left there could cause continual external oil leaks Large Screwdriver When removing the head prepare yourself for a challenging heavy 7Olb lift with your arms outstretched If you re not sure you can do it yourself ask a friend to help and place a thick wood board covered with a layer of soft towels as protective material in the under hood area This can serve as a temporary resting place Recommended are hand gloves for protection thick style but not so thick that you can lose a tight grip Lift the front Grasp the head at the front camshaft access hole and pull it up clear over top of the timing chain then Lift the Rear Grasp under a rear rocker arm carefully so it doesn t slip Then dead lift the head up amp out Try to pull the head either to the temporary resting place or 1f you have the strength then lift it clear of the car and set on its side avoid setting the bottom side down to protect valves Place the head on an surface with absorbent papers to ca
73. our machinist should adjust id ipai valve guide clearances accordingly J 22917 3 0118 O S When guides are worn beyond specification i T E available oversize To avoid preventable adventures our advice is that replacement valves are you insist that your mechanics actually read all recommended to be installed the service procedures before starting work on your car Crankshaft Main Bearings Opel Factory Standard 1 2 3 4 amp End Cap Engine Block Bearing Diameter 2 2829 2 2835 Crankshaft j Engine Block Mount Locati Aftermarket Vendor Standard 1 2 3 4 amp End Cap Main amp Rod neme Bock vount Locations Bearing Diameter 2 283 2 284 Bearing i Main Bearings Main End Cap Note Chilton s Manual says 2 2829 2 2835 Journals 1 2 3 4 Opel Factory Undersize 010 25mm 1 2 3 4 Bearing Diameter 2 2733 0002 Opel Factory Undersize 020 50mm 1 2 3 4 Bearing Diameter 2 2635 0002 Crankshaft Rod Bearing Journals Aftermarket Parts Vendor STD 2 046 2 0467 Chilton s Manual says STD 2 0461 2 0467 Crankshaft Schematic h i aie Aftermarket Vendor Crank Main Bearing Journals A B C D M y l Main Bearing Bore Diameter Rod Bearing Journals 1 2 3 4 y 2 4409 2 4415 Crank Main End Cap Journal E when align bored Pilot Bearing Inside End
74. rated here with portions of OMC s 1989 tips restated and illustrated here too Different points of view were compiled below so consult all and all your service manuals too before starting these procedures Assembling Crank to Block Main Bearing I When installing new main bearings into a spotlessly clean block your hands should be clean amp Cap you should have a clean lint free rag handy and your block main bearing caps and main 1 4 bearing bolts should be ready to go The crankshaft should be fully clean including using q tips Style to wipe grit from all oil passages Note that bearings are installed with their outer surfaces a DRY not lubricated Carefully wipe the main bearing bore for the 1 main bearing wipe the back of the bearing shell and slide the bearing into place Watch carefully for bits of dirt or lint since they will interfere with proper bearing seating Repeat the wiping and installation procedure for each bearing in the block and for each cap noting that 5 main 1 4 bearing is a different bearing than mains 1 through 4 Clean all dust and lint from the face of ae all bearings carefully clean all journals on the crank and gently lay the crank into the bearings Plastigage Check the main bearing clearances with Plastigage Lay a small strip of Plastigage on each main journal then install each main bearing cap DO NOT ROTATE THE CRANK WHILE YOU HAVE PLASTIGAGE IN PLACE OR YOU WILL SMEAR IT No
75. roduction off spring the 68 to 77 sugar scooped Corvettes With that it was with great pleasure that I finally got this 40 year old question in my mind answered with your GT history Views of the Mako Shark Bill Mitchell Chuck Jordan Clare McKichan Erhard Schnell and Mourad Nasr As a water dwelling predator and as a land dwelling design concept are the people behind a car that to this day has brought complete strangers walking i l GM s aquatic nameplate theme up to me whenever or wherever I take my 73 GT and begin talking to me about how extended to the later Opel Manta they had a car just like this one and how it was always a favorite of theirs As nice as the new Sky GT is the real challenge for the present day design is to integrate a fixed roof to the present body that will do justice to the look Whatever they do I hope it reflects the sporting nature of the car it represents In my opinion Porsche got it with the Cayman and BMW blew it with the Z 4 coupe Let s hope it borrows more from the C 6 Corvette rather than the Z 4 Another sore point to the Saturn and Pontiac is the price Around here 31 grand is what they are asking for a new model and I think that is a bit too much to ask for such a small car with a 4 cylinder engine high technology or not It looks like my future Opel GT will remain my only Opel GT Finally I want to thank everyone involved in putting out the Blitz I can only hope that t
76. s the cam at 4 TDC position so you can fully remove all the driver s side bolts Clean inside the tops of the individual bolts thoroughly before inserting the bit to assure an aligned and correct fit into the top of Cylinder Head Bolt the head bolts You do not want to risk stripping these as that Removal Sequence requires drilling off the bolt top to remove Also make sure that you have enough clearance to reach the 2 rear bolts with the 10 o serrated bit toot if the wrench is jammed at the firewall you may 12 bolt Late style need to acquire either a shorter socket a 1 2 breaker bar or a Note 2 Front Bolts second 12mm serrated bit to be cut shorter with a dremel tool O BO to about 2 1 2 to fit especially on the hard to reach passenger side rear head bolt If you have a 1972 or later cylinder head use a 6mm allen head bit or wrench to remove the front 2 vertical bolts to the timing chain cover Once all the bolts have been loosened start to remove them When doing this keep track of which bolt came from which hole Once they are off the engine degrease them with solvent and clean out the threads with a wire brush or wire wheel and then re tap bolt threads by running them through a die tool Prepare to remove the head Most of the time you need to use leverage Opelclub com 3 2008 to pry the head from the block Use the factory casts for this Place a flat head screwdriver on the metal bar
77. ssembly of your engine the good news is that this procedure is not unique to Opel engines so instruction on procedures for the application of Plastigage is much the same as on more common engines like Chevy Ford etc A more specific procedure was described in the August 1989 issue of the OMC Blitz and is excerpted here too Opelclub com 3 2008 Plastigage Usage Instructions Continued The Plastigage package procedures state Remove the bearing cap and wipe the oil from the bearing insert and crankshaft journal Note When checking main bearing clearances with the engine in a position where the main bearing caps are supporting the weight of the crankshaft and the flywheel ie engine is in the car an erroneous reading due to weight of the crankshaft amp flywheel can be eliminated by supporting the crankshaft weight by means of a jack under the counterweight adjoining the bearing being checked Cut or tear off a piece of Plastigage as long as the full bearing width attempting not to squeeze the gage material Tear through both the envelope and plastic thread at the same time Open the envelope lengthwise by cutting the edge with scissors a knife or by tearing With the envelope open lift out the Plastigage by one end or roll out with the thumb if the material is lightly stuck to the paper If an attempt is made to lift the Plastigage from the paper when it is struck it may break Occasionally the color in the Plastigage material
78. t But if you have to do this at home this actually means a job to be Above 3 step engine done in the garage or a flat section of a driveway You will need the means removal using jack stands to lift the front end of a GT high enough that the engine can slide out from and cherry picker lift under the belly pan which is commonly done with 2 ton capacity engine lift device Verify mount areas are solid Also block wheels better known as a cherry picker with a minimum 6 1 2 feet boom height Lowering the engine or drive train onto a moveable board like a thick plywood sheet possibly with added wheel casters can make it easier to slide out of the way Always use a chain that is thicker than is actually needed and attach at the driver s side upper starter bolt amp on the passenger side front threaded bolt hole see diagrams on next page Make the decision if you will or won t separate the transmission prior to engine removal Engines modified with aftermarket installations like exhaust headers fuel injection solid state ignitions etc also require more steps to remove Also note additional removal requirements when vehicle is equipped with automatic transmission emissions reduction devices or air conditioning system components Before beginning collect required tools and supplies including an extra sturdy jack jack stands and cherry picker Set up a well lit ventilated work area with a clear safety perimet
79. tch any dripping oil Congratulations Your Head is Now Ready to Prep to Reinstall Part Preparation for Re Installation 22 23 24 25 26 26a 27 28 Inspect the head for visible cracks The critical area is indicated at right cracks occur from the area around 2 amp 3 cylinder exhaust valve seats Have a machine shop magnaflux your head if there is any question Also inspect the cylinders for unusual wear patterns pistons significantly off center ridges on cylinder tops broken piston rings etc Don t continue to the next steps unless head amp engine are known to be OK Inspect Head Underside for Cracks Use gasket scraper s and cleaner to remove all traces of gasket carbon amp grease from the lower surface of the cylinder head Clean the upper oer eNOS Qel N surface of the engine block If you are using the thick edge blade eS type of gasket scraper use that for initial scraping and finish with a A A A O razor blade type edge a sharp tipped exact o knife also works well eSo o o oA On Engine Block use paper towels and q tips to wick bolt holes of all oil If you have a thread tap go ahead and re tap the head bolt holes Block Top Clean Thoroughly You can use a shop vacuum to remove surface oil amp other contaminants If the coolant level is so high it almost reaches the top you can also wick it down a bit with paper towels Follow with a wipe from a ra
80. tch to starter Automatic Transmission Throttle Linkage has external spring near pedal Many internal replacement components are available because the Opel TH180 model automatic shared parts with other 1970 s small sized GM cars Monzas etc Opelclub com 3 2008 Vacuum Circuit Shifting out of first gear requires a connected and operating vacuum circuit It starts with an extra port off the intake manifold connects with rubber and metal hoses to the vacuum modulator at the rear of the transmission z pZ You must fix all sources s rE yy Extra of common Opel vacuum rs ae Vacuum Port leaks for crisp shifting bias ee for auto trans Important Fluid Retention Areas pan Gasket install with a new filter Dipstick Tube Seal Opel Auto Transmission Fluid leaks Overtorqued bolts deform metal around A critical transmission fluid leakage location is are common but if they are not dealt holes which cuts gaskets gt where the dipstick tube enters the transmission with not only cause poor drivability Flatten flanges with E T case This is best fixed when the trans and engine soft hammer on E ar are out of the car Install a new o ring seal and a wood board ee p i To apply a thin ring of RTV Silicone gasket sealer l ae Install gasket dry TA ae above the o ring on the dipstick tube Bolt the tube if transmission gets too hot It s and use tacky benre k to the engin
81. te that the proper position for any split bearing is tang to tang The tang is the little bump on one end of each bearing shell which positions the bearing in its bore The tangs for each bearing should be on the same side Torque each bearing cap to specified torque in steps of 25 50 then to maximum of 72 ft lbs in most cases Also be sure to work from the center out in torquing bolts just as if you were torquing a cylinder head Once all bolts are properly tightened remove them all then remove all bearing caps Using the Plastigage wrapper check clearance on each main bearing Clearance measured at it s widest should be between 0015 and 003 See illustrations right for procedures to install and interpret readings of Plastigage Assuming all main bearings clearances are OK use some carburetor cleaner spray to remove the Plastigage Spread engine assembly lube p Pa Manufacturer suggests placing Plastigage strip molybdenum or equivalent on INSIDE surface of each main bearing the full width of the journal about 1 4 off center upper and lower Leave the outside edge of the bearings dry ee The next step is important spread the same lube on the inner lip of the rear main seal then spread sealer on the outside diameter of the seal CAREFULLY slip the seal over the rear of the crank and lower the crank back into the bearings Be very careful to align the
82. ter of 2007 However as of this writing it appears E O S may be making a comeback at GM dealers GAS ENGINE OIL SPECIFICATIONS Oil Grade Category Availability Status Specifications SM Current For all current vehicle engines SL Current For engines 2004 and older SJ Current For engines 2001 and older SH Discontinued For engines 1996 and older SG Discontinued For engines 1993 and older SF Discontinued For engines 1988 and older SE Discontinued Not acceptable for gasoline powered vehicles engines made after 1979 SD Discontinued Not acceptable for gasoline powered vehicles engines made after 1971 You may be asking Why reduce ZDDP levels out of engine oil if it can cause so much harm to flat tappet engines The EPA has required new car manufacturers to guarantee catalytic converters for over 100 000 miles So oil companies have been forced to drastically reduce ZDDP levels because today s car manufacturers now have to warranty catalytic converters for over 100 000 miles It seams ZDDP may actually shorten the life span of the catalytic converter raising warranty issues Also since modern cars now have roller lifters it eliminates the need for ZDDP The vehicles that fall through the cracks are the older performance and classic cars which include our Opels ZDDP QUESTIONS amp ANSWERS What is ZDDP ZDDP is an oil additive known as Zinc Dialkyt Dithio Phosphate which has been the primary Extreme Pressure ingre
83. tin said 2 09 Outer Diameter Delta Head 2 Center Journal 2 097 Opel s bulletin said 2 08 Outer Diameter Delta Head 3 Rear Journal 2 0773 Opel s bulletin said 2 07 STD Camshaft Diameters 1 Journal Outer Diameter 1 9266 1 9272 Haynes Manual 2 Journal Outer Diameter 1 9167 1 9173 Haynes Manual 3 Journal Outer Diameter 1 9069 1 9075 Haynes Manual Note Semi finished cam bearings require align boring for Delta 1969 3 bearing heads installation Refer to STD bore diameter specs listed above are identified with triangle mark on driver s side at left of the square side plate Note Above dimensions apply only to standard sized cams amp bearings Service undersizes were sold by Opel Camshaft Bearings Later 4 Bearing Head The later 4 bearing head added a journal located between the intake and exhaust valves of 3 cylinder STD Housing Bores for Later 1971 1975 Four Bearing Cylinder Heads Outer Diameter of 1 Journal 2 1069 Aftermarket Vendor Spec s Outer Diameter of 2 Journal 2 097 Aftermarket Vendor Spec s Outer Diameter of 3 Journal 2 0872 Aftermarket Vendor Spec s Outer Diameter of Rear 4 Journal is 2 07735 Aftermarket Vendor Spec s STD Camshaft Diameters 1 Journal Outer Diameter 1 9266 1 9272 Haynes Manual 2 Journal Outer Diameter 1 9167 1 9173 Haynes Manual 3 Journal Outer Diameter
84. to do you can screw in the sprocket mounting bolts then use a screwdriver Carefully lift and place cylinder head onto block Good places to grab are at the front camshaft access hole and under a rocker arm towards the rear Think ahead and plan how you ll do this You ll have to carry the weight yet maneuver the front of the head around the top of the timing chain which might require some nimble finger work when you are setting it in place Ask a friend to help to share this load Take care not to damage the head gasket It s on right when all the exterior edges of the head line up with the block and the head plops down on the 2 passenger side dowel pins Prepare cylinder head bolts Spray engine bolt threads with WD40 or apply a light coating of clean 10 30W engine oil 0 Don t dip them in oil as excessive liquid affects accuracy of 10 Bolt Early style torque measurements you get and if you overtorque the bolts it may attach the head unevenly or overstress bolts 0O O 4 Insert the head bolts one at a time in the numerical order and Cylinder Head Bolt locations that are shown in the diagram at right Installation Sequence If you have a 1972 or later cylinder head don t forget to 2 install the front 2 vertical bolts to the timing cover afterwards lt 12 bolt Late style Use the special serrated 12 point bit tool to finger tighten Note 2 Front Bolts each bolt in t
85. ve message 909 355 6735 CA 1968 Opel Kadett 2 Door Wagon Everything there except front windshield All glass is good ran when parked To many projects no time to finish This Buick needs a V 6 Call 509 551 2486 WA 1970 Opel GT The car is currently not running but needs some work I don t know much about the car since I won it in a divorce and I m just trying to sell my ex s baby Please help me get revenge on him by buying this wonderful classic car for 2000 Reply to sale 591730460 craigslist org ID 1971 Opel GT Turquoise 137k Strong engine excellent drive train second owner Needs minor work rugs amp water pump comes with extra car 7000 Call Jerry 415 868 0686 CA 1972 Opel Kadet wagon Clean mostly original runs and drives great 35 mpg 1450 Call Vale at 503 760 6466 OR 1978 Buick Opel Straight Body good condition engine runs great bad trans moving must sell 100 obo Call 360 813 1801 WA 1970 Opel GT Complete car needs work 4spd manual trans Would make a great father son project Runs and drives but needs brake work Exterior is solid Has little rust and has some bondo work Interior is there but needs to be redone New tires rebuilt calipers rear brakes new brake lines and hoses new carb Can be redone or just fixed and driven the way it is Would need brake work and exhaust gasket between manifold and exhaust pipe Odometer reads under 30k Have a clean Pa title for it Ne

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