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1. 4 500 Displacement 42er rri ree P eo HP caeasnsiss Hia EIE E sassen 131 Recommended Gas 1 5 1 iie diisieseesasueote sas sasae 91 Octane 135 Engine Alpha isum 2 Type of engine 4 cycle 45 Degree V twin Oil amp Air Cooled Standard Compression Ratio ccssscssssesseessesesseesesees 10 67 to 1 BORG E E 4 313 Stroke A A dicente EE 4 625 Displacement er rre Feet a t rn e e oe in F e FEE Ene 135 Recommended G s 1 2 2 B IIdierieieeseesaite stop odd 91 Octane Camshaft Specifications Lift 658 658 Duration 262 266 Intake 24 BTDC 58 ABDC Exhaust 69 BBDC 17 ATDC TDC Lift 208 178 REV E OWNERS MANUAL FOR ALL JIMS ENGINES 120 131 amp 135 Before Installing Engine In Chassis preparation If a shop has performed the install and start up of your new engine then you will not need to perform the following steps But you will need to know if they have indeed done the following steps If you will be doing the installation of JIMS engine then you will need to do the steps listed below Sprocket Shaft Spacer Information If your motor assembly came with a sprocket spacer installed already you should be ready to install engine in chassis from the info you gave the Sales Dept If you have an extra spacer shipped with the engine then check appli cation list below for correct usage per ye
2. Do not exceed 55 mph Oil Change Intervals Break in At 50 miles 500 miles 1000 miles Normal Oil change intervals e 1500 to 2000 miles depending upon usage Change the oil filter every oil change Torque Checks Re check the torque of all accessible engine and chassis fasteners at all oil changes Do not re torque the head bolts Inspection and Service Wear information for Valve Train Components Used in Performance Twin Cam Engines Valve Train Components should be inspected every 5000 miles of service more often if an engine is used under severe riding conditions i e full throttle race operation in city dusty low octane usage trailering and two up As with all high performance engines components are under or subject to more stress in one way or another many times more then a stock engine The following engine components will need to be inspected and or replaced every 5000 miles or more often as needed 1 Rocker Arm Rocker Arm Shaft replace if more than e Shaft fit in bushing 0035 e End play side clearance 025 e Shaft fit in support plate 003 2 Cam Support Plate replace parts if more than Cam chain tensioned shoe wear 090 or 1 2 thickness of shoe Crankcase bushing press fit in cam support plate 0008 e Crankshaft bushing maximum I D 8545 3 Hydraulic Lifter Replace if more than Fit in crankcase 003 Roller end clearance 015 Roller fit on axle 0015 or any rough area or tight
3. 131 amp 135 the engine when you start up Front cylinder head mount 2008 to present Touring models JIMS engines come with the mounting hole provisions for the front head mount to be installed without any modifications You can use your original mount and hardware or chrome polished or black anodized JIMS Billet front head mount and chrome Heim joint link This is a stronger and better looking mount sys tem Order separately See JIMS No 1437 and 1444 in catalog or on the web site Follow either H D service manual or JIMS instruction sheet for installing the front head mount and torque specifications All Models Installing Primaries and Clutch Follow installation instructions for inner and outer primary clutch assembly sprockets primary chain adjustment and alignment per H D service manual for the year and model you will be working with Engine Compensator recommendation We recommend a H D No 40274 08A or equivalent This kit comes with heav ier springs and increased travel to meet the demands of race engines This kit will support up to 7 times the energy absorption capacity of the original equip ment compensator In return this will help protect the engine and driveline components during extreme drag race launches The 2012 amp 2013 models come stock with this Clutch Recommendation The high torque output of the JIMS Race engines do require a clutch with in creased torque capacity The Screamin Eagle No 37976 08A cl
4. At a constant altitude such changes are small and generally not as important in day to day operation Changes in altitude cause the effect to become more 9 df F QS OWNERS MANUAL FOR ALL JIMS ENGINES 120 131 amp 135 R free battery for the correct model application Battery Cables JIMS recommends Super Flex performance battery cables because of the ma terial quality of the cable and eyelets and flexibility See JIMS catalog for a full model selection Starters and RIng and Pinion gear sets If your starter can t handle that big inch engine or is just plain worn out see JIMS New 2013 catalog for our selection of Performance High Torque starters We also offer High Torque Starter Ring and Pinion Gear Sets to help take the stress of your starter Washing out complete oiling system Before you install your new JIMS Race engine in its chassis thoroughly remove and wash out the complete oiling system This includes removing all parts that oil has passed through oil tank oil cooler and oil lines Make sure the entire oil ing system is clean If you are fitting your new JIMS Race engine into a chassis that has been used be sure to completely clean the oil tank together with all lines and fittings leading to and away from the engine If the old engine has more than 20 000 miles of use or if it has suffered any unusual wear dismantle the oil pan and hoses and thoroughly clean them Be very careful you do not tear small slivers
5. amp 135 131 TWIN CAM 120 Fi 4 l lt Z lt 2 H D m Z O i i f AY M JIMS 555 Dawson Drive Camarillo CA 93012 805 482 6913 www jimsusa com And Each 1500 Miles There After OWNERS MANUAL FOR ALL JIMS ENGINES 120 131 amp 135 JIMS ENGINE INFO SHEET SECTION 1 CONTACT INFORMATION Customer Business Name First Name Last Name Phone Ext Address City State Zip Warranty Card SECTION 2 MOTORCYCLE INFORMATION Motorcycle Model Year Engine Serial Number Clutch Tire Size Actual Mileage Mileage on Engine Exhaust System Air Cleaner Ignition Setting Rev Limiter set Electronic Fuel Injection Throttle Body Modifications if any Different Cams z JIMS A Un OWNERS MANUAL FOR ALL JIMS ENGINES 120 131 amp 135 Cylinder Head replace if more than Valve guide press fit in head 002 Valve seat press fit in head 002 Head warpage 006 Cylinder replace if more than Taper 002 Out of round 002 Warpage at gasket surfaces 006 Piston replace if more than Fit in cylinder 006 e Piston pin fit wrist pin 0012 Compression rings 030 Oil control rings 070 Ring side clearance compression rings 004 Ring side clearance oil control rings 008 Connecting rod replace if more than e Pist
6. of rubber off the edges of the oil lines as you fit them to the engine s oil fittings Some Pre Start Information Do not connect the oil return line from the engine to the oil tank Fit a hose from the engine s oil return fitting and run the hose into a large catch pan TWIN CAM EVO Mounted Engine Installation Remove any paint from the motor mount pads on frame If installing in an FXST Softail bolt down the rear engine mounts first The rear engine case mounting holes have been optimized so the installation of the rear bolts can be performed with assembled engine Install top motor mount per Harley Davidson s service manual for the year and model you have After Torquing the rear engine bolts check the clearance gap between the front engine mount and the frame Shim front engine mount to within 010 of an inch with shim stock TWIN CAM EVO Mounted Recommended Rear Engine Mounting Hardware H D Part No 3528 rear motor mount bolt 3 8 16 x 3 1 4 used on 1991 98 FL FXR FXD and 99 FXR H D Part No 3512 rear motor mount bolt 3 8 24 x 3 1 4 used on 1991 99 FXST H D Part No 6019 washer 3 8 x 29 32 x 1 16 1991 96 FXST and 1991 98 FL FXR FXD amp 99 FXR For 2006 to present Dyna s or 2007 to present FL s remove the three red shipping plugs before attaching the transmission If you neglect to remove these you will not have oil pressure and will damage EV E 6 13 OWNERS MANUAL FOR ALL JIMS ENGINES 120
7. provide detailed description of problem with motor OWNERS MANUAL FOR ALL JIMS ENGINES 120 131 amp 135 3 Must provide the motor serial number see Section 3 4 Must call and get a Returned Goods Authorization number from JIMS All motor returns carry a 500 00 Inspection Fee If the Engine is determined defective due to a defect in manufacturing material or workmanship the fee will be waived If the returned part is found not to be defective the fee is im posed as well as the cost of parts and additional labor for repairing the engine assembly l agree with the above warranty procedures and authorize JIMS to charge a 500 00 Inspection Fee on engine as well as charge for additional parts and labor if the engine is not found to be defective Signature Date Authorized signature required to process return SYMPTOMS In addition to the above information we require the following parts and doc uments Please copy pages 1 2 and 3 then return these completed forms be fore returning any parts Original Invoice of Purchase Office Use Only Hold Product Yes Date No Date Owners Manual For All JIMS Engines 120 131 amp 135 Thank you for purchasing one of JIMS engines which has been designed and manufactured to give years of safe Racing fun This owners manual gives you an in depth look at the maintenance required to keep your JIMS engine running strong Any and all repair informa
8. racing with them and enjoying it but it is in your best interest to gather multiple tuners suggestions to help ensure the jetting set up you choose is fit ting for the conditions More Power Air Flow Volume Ultimately the amounts of power your JIMS 120 131 amp 135 Race engine can produce is determined by two factors How much air it can process in a given time and how efficiently it uses that air to supply useful power to its crankshaft The JIMS 120 Race engine delivers about 121 horsepower while the 131 puts out about 130 horsepower The 135 delivers about 136 horsepower It is very possible to increase that output by 2096 or more and it s also possible to re duce output by a similar percentage Each and every part of this engine is per fectly balanced designed and developed or selected to work together for maximum airflow and power output Keep in mind it is easier to lose power than to gain power For instance if you upgrade to a larger air cleaner or car buretor to flow more air the result may not meet your expectations That s be cause a larger carburetor does little to improve power if the total airflow is limited in some other part of the engine Substantial power gains require substantial modifications Increased airflow through the cylinder heads of your JIMS 120 131 amp 135 Race engine requires the manifold and both intake and exhaust ports be carefully and skillfully mod ified Cylinder head porting continues to be a
9. the cranking pressure igni tion timing or carburetor settings of your JIMS 120 131 amp 135 Race Kit engine please be aware that any of these alterations improperly done can result in en gine damage You should only consider such modifications if competition pres sure demands them And make them only if you have the experience or expert assistance to deal with the possibility of detonation Performance Tuning As you can see performance tuning is complex One change often creates the need for other compensating or complimentary alterations If raising the com pression pressure makes the chamber more turbulent a likely thing it may be necessary to back off ignition timing to compensate for the increased flame front speed across the chamber If moist air rolls across the track late in the af ternoon a leaner main jet may be needed to compensate for the reduced oxygen in the more moist air If that air is also cooler and more dense no change may be needed at all The possibilities are almost endless However exploring those possibilities can be great fun If drag racing and performance tuning in general were Cut and Dried they would be boring The stands OWNERS MANUAL FOR ALL JIMS ENGINES 120 131 amp 135 6 13 provements it s difficult to list all replacements So if you re unable to receive the service or parts you need to maintain your JIMS race engine please call JIMS Parts department at 805 482 6913 or E
10. throttle body without electronic components Use No 5216 JIMS 58mm Elliptical throttle body without electronic components Use No 705 JIMS Manifold with electronic components Use No 704 JIMS Manifold without electronic components Use No 27713 08 Screamin Eagle Pro High Flow 58mm EFI throttle body manifold for throttle by wire models only Use on 2008 to present Tour ing Models Use No 27639 07A Screamin Eagle Pro High Flow 58mm EFI throttle body for cable operated throttle Use on 2006 to present Dyna or Sof tail EFI models and 2006 2007 Touring EFI models Not for use on cruise con trol models Use No 29667 07 Screamin Eagle Pro Hi Flow intake Manifold for No 27639 07A 58mm throttle body Note See H D dealer for details on mounting information Use No 27623 05A Screamin Eagle Pro 50mm throt tle body manifold for cable operated throttle Performance Air Cleaner Kits These are designed for Race applications only
11. amin Eagle Super Bore 51mm CV carburetor kit No 27928 07A using Screamin Eagle Ignition No 32124 04 1 The standard furnished settings are normally correct when used with 2 into 1exhaust systems Note Alternate exhaust systems may require different settings 2 The standard furnished settings are normally correct for a standard day such as is common near sea level in the summer 70 degrees Fahrenheit 29 9 Hg pressure 5096 humidity 3 The Screamin Eagle 51mm carburetor s standard settings are Main Jet 230 Slow Jet 48 Jet Needle NDKS JET settings may need to be changed for peak H P Recommended Exhaust Systems JIMS has tested exhaust systems on the Dyno for the best horse power num bers As a result of all these tests we have found the Thunderheader Exhaust System and the Supertrapp 2 into 1 exhaust system using 17 discs gave us the best HP numbers Recommended Oil Filters and Spark Plugs For pre start oil you can use any good quality oil that has been designed for air cooled roller bearing engines After heat sinking engine use an oil that is mineral based like H D 360 If your riding ambient temperature is above 40 de grees F you can use SAE 20 50 oil for the first 2000 miles Use 32329 97 Spark Plug 6R12PP Double Platinum and 12mm gap at 038 to 043 Tuning Factors The Air Changes in air pressure temperature and humidity all have effects on the air fuel mixtures power output and engine temperature
12. ar model Sprocket Shaft Spacer Inspect the engine sprocket shaft seal and bearing cavities for any packag ing debris before continuing Locate spacer specific to your application For 1999 to 2005 Dyna A use H D 24038 99A JIMS No 1286 1319 spacer 888 long e For 2006 to present Dyna A use H D 24008 99A JIMS No 1286 1320 spacer 1 0950 long For 1999 to present FL A use H D 24008 99A JIMS No 1286 1320 spacer 1 0950 long e For 2000 only Softail B use H D 24038 99A JIMS No 1286 1319 spacer 888 long For 2001 to 2006 Softail B use H D 24039 01A JIMS No 1486 1834 spacer 988 long e For 2007 to present Softail B use H D 24008 99A JIMS No 1286 1320 spacer 1 0950 long Inspect spacer for nicks and dents Lightly coat outside diameter of sprocket shaft spacer and the inside of the sprocket shaft seal with clean 20w 50 H D motor oil Slide sprocket shaft spacer onto sprocket shaft until it is seated on the sprocket shaft bearing Recommended Oil Cooler These engines need to be fitted with an effective oil cooler JIMS recommends you use the current H D Accessories Book Oil Coolers Order your cooler kit for the correct year and model of the motorcycle Besides the 1st priority of an oil cooler you can also add a JIMS Forceflow Cylinder Head Cooler P N 5400 for added cooling See JIMS catalog or website Battery It is very important to always use a well maintained batter
13. at will have its oil tank higher than the engine you will need to follow the instructions listed below Install the recom mended amount of oil and type per your owners manual in oil tank Ride the motorcycle until the engine is up to operating temperature Idle mo torcycle on kickstand for 2 minutes Turn the motorcycle off and with the bike still on kickstand remove and check oil level on the dipstick Add oil if neces sary until oil registers on the upper groove of dipstick Full Hot Line Performance Twin Cam Engines Valve Train Components should be inspected every 5000 miles of service More often if an engine is used under severe racing conditions i e full throttle race operation As with all high performance engines components are under or subject to more stress in one way or another many times more than a stock en 11 OWNERS MANUAL FOR ALL JIMS ENGINES 120 131 amp 135 Combustion Chamber Pressure Power output and combustion chamber pressure are directly related The higher the pressure the more efficient and more powerful the engine becomes within limits That is until the onset of detonation A racing engine one that is carefully and constantly looked after by an expert can run with very high compression pressures In the case of the Twin Cam chamber design these pressures can exceed 210 psi An engine that operates under a variety of con ditions must have its compression pressure compromised so that i
14. ed engines JIMS recommended ignition for fuel injection engines is the Screamin Eagle Pro Super Tuner and the Screamin Eagle Pro Tuner Software with Smart Tune You may also need a Pro Tuner cable kit and a Pro Tuner training DVD These are for race application only Use H D 32109 08C Screamin Eagle Pro Super Tuner for 02 and later EFI Dyna Softail and 02 later EFI Touring and Trikes Use H D 32111 13 Screamin Eagle Pro Tuner software with Smart Tune for 02 and later EFI Dyna Softail and 02 later EFI Touring and Trikes Use H D 32184 08A Screamin Eagle Pro Tuner cable kit Use 41000018 for 2011 to present softails and 2012 to present Dynas Use H D 32101 10 Screamin Eagle Pro Tuner training DVD Intake Manifold Installation Center the intake manifold evenly between the two intake flange mounts per your service manual for the year and model Throttle Bodies and Manifolds JIMS recommended throttle bodies and manifolds for the fuel injected engines are as follows JIMS throttle bodies are for all 2006 to present throttle cable style motorcycles JIMS throttle bodies cannot be used on electronic throttle by wire models used on some 2008 to present motorcycles Follow the throttle body manufacturers instruction when installing per application Use No 5221 JIMS 62mm Elliptical throttle body with electronic components Use No 5215 JIMS 58mm Elliptical throttle body with electronic components Use No 5222 JIMS 62mm Elliptical
15. mail at www jimsusa com If you do find it necessary to contact JIMS please have the following informa tion written down and handy failure to do so will delay service Before starting or riding your new JIMS engine please read through your H D owner s manual as it is your the riders responsibility to know how the engine and motorcycle function correctly These engines are first and foremost a Twin Cam designed amp manufactured with its size and power in mind If for any rea son this engine starts to make LOUD internal noises safely stop the engine and fill out the information sheet and submit to JIMS Caution These engines make almost double the HP amp Torque as your old stock engine 120 Engine both Alpha amp Beta iS 2 Type of engine 4 cycle 45 Degree V twin Oil amp Air Cooled Standard Compression Ratio csscssssscssesesseseseseseeees 10 00 to 1 BORG 4 125 Mun cm 4 500 Displacemient iiir tette ttn tnter aee er REY 120 Recommended Gas 2 e eiii iiiiiiie id eiesec cessas resa odo 91 Octane 131 Engine both Alpha amp Beta eno e r 2 Type of engine 4 cycle 45 Degree V twin Oil amp Air Cooled Standard Compression Ratio csssccesssesssesseeesseeseees 10 50 to 1 lI 4 313 Mui
16. n art form and should only be per formed by a practiced porting expert While the Screamin Eagle air cleaner element is one of the highest flowing units available the stock airflow is sub stantially increased with larger filters that allow more air volume than the sup plied filter However they may interfere with riding comfort depending on make model and personal preferences REV E OWNERS MANUAL FOR ALL JIMS ENGINES 120 131 amp 135 6 13 10 OWNERS MANUAL FOR ALL JIMS ENGINES 120 131 amp 135 Application Information for EFI engines or carbureted models Use JIMS Air Cleaner Billet Backing Plate Kits with built in breather system It is compatible with stock H D outer air cover The other option is to see your local H D dealer for a selection of Screamin Eagle air cleaner kits If you are using one of these kits be sure to follow the instructions provided by the manufacturer Recommended Carburetor and Settings JIMS recommends using the Screamin Eagle Super Bore 51mm CV carburetor kit No 27928 07A It requires ordering separately the Screamin Eagle manifold kit No 29414 07 If carburetor tuning is required order Screamin Eagle 51mm tuner kit No 27432 02 Order all all separately from a H D dealer Note For carburetor settings refer to manufactures instructions Additional re lated instructions will come from the ignition programing system you choose The following info relates to usage of the Scre
17. on pin fit wrist pin 0012 Side play between flywheels female rod end play 024 Fit on crank pin up and down play 002 Flywheel runout not to exceed e 005 in truing stand End play F W in left bearing 006 e Inspect shaft bearing journals for scoring galling or wear not to exceed e 0005 runout in a truing stand REV E 6 13 Oil Pressure at 2000 rpm with an oil temperature of 230 F Should be 25 to 35 PSI using the correct oil viscosity for the ambient temperature engine will be operat ing in 10 Counter balance components replace if more than Balance chain guides front amp rear 060 to 070 Balance chain guides lower 060 to 070 e Inspect other balancer components using H D service manual 14 13 OWNERS MANUAL FOR ALL JIMS ENGINES 120 131 amp 135 gine Break In Procedure Note Follow the engine break in procedures outlined in the Harley Davidson owner s manual per your application 1 Allow the engine to warm up before riding 2 Do not use full throttle 3 Do not idle the engine for more than two minutes Note Even less if the air temperature is above 80 degrees Fahrenheit 4 Do not load the engine at low rpm Note All engine loads must be moderate 5 Vary the rpm frequently Note Do not hold a steady speed 6 First 50 miles Do not let the engine rpm exceed 2500 Do not exceed 50mph 7 Next 500 miles Do not let the engine rpm exceed 3000
18. rge catch pan Note Remove the spark plugs from the engine Attach the plug wires to the spark plugs and lay them on the cylinder heads to prevent damage to the coils Be sure the oil tank is properly filled with the correct oil Use the electric starter to turn the engine until the oil pressure light goes out or until the pressure gauge reads 10 15 psi Re install the spark plugs torque to 12 to 18 ft Ibs at tach plug wires Depress both compression release plungers You can hold the rear compression release plunger as the engine is trying to start After engine has started release compression release plunger Allow the return oil to run into the catch pan Run engine between 900 and 1500 rpm until the tops of the cylinders have reached 200 degrees Fahrenheit too hot to touch This normally takes between one and two minutes Note Do not allow the oil level in the tank to get too low while the engine is running Stop the engine and let it cool to room temperature Inspect the installation for any oil or gasoline leaks Top off the oil tank Repeat the warm up and cool down procedure three ad ditional times Note Watch and maintain the oil level in the tank You may re connect the oil return line to the oil tank after at least two quarts of oil have been pumped into the catch pan Discard the oil in the pan EVO TWIN CAM Checking and Adding Oil Caution f JIMS EVO Twin Cam engine will be installed in a Softail or any model motorcycle th
19. spot OWNERS MANUAL FOR ALL JIMS ENGINES 120 131 amp 135 REV E 6 13 Spark Plugs Gaps Ignition System Oil Pumps Heads Modified Heads SECTION 3 ENGINE AND TESTING INFORMATION Date of Installation With Cover Yes e No Motorcycle Serial Number Transmission Ratio Pulleys Gear Ratio Carb Jetting Main Slow Needle Bleed down Test Results Front Rear Systems Compression Test Results Front Rear Dyno Test Results HP Torque Dyno Charts MOTOR WARRANTY RETURNS JIMS shall not be liable for any consequential or incidental damages resulting from a failure of any JIMS motor the breach of any warranties the failure to deliver delay in delivery de livery in non conforming condition or any other breach of contract between JIMS and a cus tomer Each part returned will be inspected for damage due to improper packaging shipping or damage that occurred prior to JIMS receiving the part After inspection of the motor is com pleted and there is any incidental damage the customer will be notified immediately MOTOR WARRANTY PROCEDURE See terms and conditions in the JIMS catalog for authorization to return parts The following requirements must be met before JIMS will authorize the war ranty return of a motor transmission flywheel assembly 1 Must provide proof of the date of sale from the dealer copy of invoice in voice or Warranty card 2 Must
20. t is not dam aged under the worst of those conditions For this reason your JIMS 120 131 amp 135 Race engine does not develop the very highest possible compression pressure Compression pressure is found by performing a common compres sion test as outlined in Harley s shop manuals In this test the mechanic re moves both spark plugs and fits a compression tester to one of the plug holes He then opens the throttle fully lifts the CV slide and turns the engine through five to seven compression cycles or until the pressure reading on the tester stops rising The measured pressure is the compression pressure for that cylin der The common method used to raise compression pressure is to remove ma terial from the heads on a milling machine This decreases combustion chamber volume raises the compression ratio and in turn raises the cranking pressure Detonation Detonation must be avoided A detonation event is literally an explosion Most of the time these explosions are so small that they do not immediately dam age the engine However if they are energetic or frequent enough things break A piston can be destroyed in a few engine revolutions from the effects of severe detonation Detonation can be brought on by a variety of conditions including incorrect ignition timing poor quality gasoline overly lean air fuel mixtures and too much cranking pressure for the particular combustion cham ber or engine overheating If you choose to alter
21. tion that is needed can be found in a service manual for the year and model of JIMS engine you have installed in your motorcycle The use of an H D parts book will be helpful for viewing the parts and part numbers required for any repair Please note that all JIMS engines use a Timken bearing for the retention of the flywheel assembly in the left case With that being said you will also need a service parts book and manual for model year 2002 JIMS will be making periodic improvements to these engines With these im 3 OWNERS MANUAL FOR ALL JIMS ENGINES 120 131 amp 135 REV E 6 13 would not fill and pits would be empty There would be no friendly arguments about which cam or what exhaust works best Drag racing is one of the most popular motor sports in America The fans are often racers themselves have been racers want to be racers or know a lot about the nuts and bolts of drag racing We at JIMS have spent years developing the JIMS 120 131 amp 135 Race engine for drag racers and those who want to become drag racers The 120 131 amp 135 engine is a strong ground pounding and reliable base for your ex ploration into the complex and fascinating sport of drag racing We hope you enjoy your new 120 131 amp 135 as much as we are pleased to bring it to you Pre Start procedures Do not connect the oil return line from the engine to the oil tank Fit a hose from the engine s oil return fitting and run the hose into a la
22. utch or JIMS High Performance Billet Clutch No 8382 are two examples you can use Battery It is very important to always use a well maintained battery with performance engines Always keep a full charge on the battery or you will cause damage to the starter drive system JIMS recommends usage of the H D OEM maintenance free battery for the correct model application Battery Cables JIMS recommends Super Flex performance battery cables because of the ma terial quality of the cable and eyelets and flexibility See JIMS catalog for a full model selection Starters and Ring and Pinion gear sets If your starter can t handle that big inch engine or is just plain worn out see JIMS New 2013 catalog for our selection of Performance High Torque starters We also offer High Torque Starter Ring and Pinion Gear Sets to help take the stress of your starter Ignition for Carbureted Follow the ignition manufacturers instructions when installing per application JIMS recommends for carbureted models the JIMS Race Ignition that can be or dered separately from JIMS Sales Department Use JIMS No 2344 JIMS Race Ignition on 1999 2003 Alpha carbureted mod OWNERS MANUAL FOR ALL JIMS ENGINES 120 131 amp 135 REVE 6 13 els Use on 2000 2003 Beta carbureted models Use H D 32124 04 ignition race turner or equivalent on 2004 2006 Alpha or Beta carbureted models Tuning for EFI Application information for fuel inject
23. y with performance engines Always keep a full charge on the battery or you will cause damage to the starter drive system JIMS recommends usage of the H D OEM maintenance dramatic As a rule of thumb you can expect a pressure loss of 396 for each 1 000 feet of altitude gain meaning that at 10 000 feet elevation an engine will lose almost 3096 of its power This loss in power will be slightly greater due to the air fuel mixture becoming richer Carburetor settings can become too rich for smooth operation and or maxi mum power production If you are going to operate your JIMS engine above 3 000 foot elevation you may find it necessary to alter the jetting Denver for example is one mile above sea level so you may need to install the next leaner needle slow jet and possibly a couple sizes leaner on the main jet A highly experienced engine tuner should make such changes Atmospheric conditions are much more important when racing because small differences can deter mine whether you go on to the next round or go onto the trailer Races are often won or lost on a tuner s ability to dial in the jetting as the atmospheric conditions change during the day If you do not understand jetting do not hesitate to ask questions The majority of race tuners are more than willing to share much of what they know but do not expect to get all the details it is racing after all Drag Racers are a congenial group and they want you to be there

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