51-1026 SS Cams.indd
Contents
1. Hydraulic 33 5109 S amp S 1984 Present 20 45 60 20 245 260 180 585V 9 5 1 to 10 5 1 33 5058 S amp S 4 Bore Engines 20 55 60 20 255 260 218 600 9 531 to 10 5 1 33 5080 S amp S 1984 Present 34 61 66 29 275 276 281 221 Solid or 631 10 5 1 or Higher Hydraulic 33 5108 S amp S 1984 Present 25 60 65 20 265 265 222 192 Yes Hydraulic 640 10 5 1 to 11 5 1 33 5133 S amp S 1984 Present 25 64 70 25 269 275 235 209 Yes Hydraulic 675 10 5 1 to 11 5 1 Hydraulic Race application verify all clearances t Timing designation is function of zero lash 053 off base circle TDC Lifts are measured at the valve and are for reference only Overlap valve lifts must be checked on assembled motor Minimum valve to valve clearance is 040 GENERAL INFORMATION 1 Lifters A Camshafts with lifts greater than stock generally have lobes that are taller than stock which means that the cam followers or lifters will travel a greater distance For this reason it is necessary to check clearance between the lifter roller and tappet block and between the rear cam bearing and pinion bearing race B High performance Harley Davidson Evolution engines equipped with hydraulic lifters can often benefit from using an S amp S HL T Hydraulic Lifter Limited Travel Kit In many instances the HL T kit will help lower cranking compression for easier starting Additionally these simple low co2. Turn adjusting screw until free play is removed and pushrod can be turned between thumb and forefinger with some drag b Tighten locking nut and recheck pushrod adjustment to insure that adjustment is still correct c Rotate engine to place next pushrod at lowest point on cam and repeat procedure Repeat for remaining pushrods 2 Hydraulic lifters a Turn adjusting screw until pushrod contacts lifter and all free play is removed b Turn adjusting screw an additional 4 to 4 turns 24 27 flats and tighten locknut Allow sufficient time for lifter to bleed down Pushrod will spin freely after lifter bleeds down It is imperative that engine not be rotated until lifter spins freely c Rotate engine to place next pushrod at lowest point on cam and repeat procedure Repeat for remaining pushrods 3 Harley Davidson Evolution hydraulic lifters with S amp S HL_T Limited Travel Kit Adjustable pushrods must be used with HL T Kit a Lengthen pushrod adjuster 20 flats to fully collapse lifter Pushrod will be extremely difficult to turn by hand NOTE It may take as long as twenty minutes for lifter to fully collapse Wait 20 minutes and attempt to rotate pushrod by hand If pushrod cannot be rotated with moderate effort proceed to Step B If pushrod can be rotated extend adjuster 10 additional flats wait 20 minutes and attempt to rotate pushrod again Do not proceed until pushrod cannot be rotated after 20 minutes b After lifter is fully col
3. for use in Harley Davidson and other American v twin motorcycles S amp S shall have no warranty or liability obligation if an S amp S part is used in any other application PANHEAD amp SHOVELHEAD CAMS VALVE TIMING t VALVE VALVE LIFT LIFT TDC t REQUIREMENTS DURATION Part Cam Recommended Intake Exhaust Intake Exhaust Shovel Intake Exhaust Spring Tappet Name Application Open Close Open Close Spacing Type 33 5062 S amp S 1948 69 18 38 40 18 236 38 453 475 151 Shovel 145 Pan Hydraulic 450S Up to 8 5 1 158 Pan 152 Pan 33 5063 S amp S 1970 77 18 38 40 18 236 238 453 475 151 Shovel 145 Pan Hydraulic 450S Up to 8 5 1 158 Pan 152 Pan 33 5064 S amp S 1978 84 18 38 40 18 236 238 453 475 151 Shovel 145 Pan No Hydraulic 4505 Up to 8 5 1 158 Pan 152 Pan 33 5040 S amp S 1948 69 30 62 62 30 274 274 495 520 220 198 Yes Solid 495 9 75 or Higher 33 5041 S amp S 970 77 30 62 62 30 274 274 495 220 Yes Solid 495 9 75 or Higher 33 5042 S amp S 1978 84 307 62 62 30 274 274 495 220 Yes Solid 495 9 75 or Higher 33 5050 S amp S 1948 69 23 43 43 23 246 246 514 540 194 Yes Solid 514 8 1 to 9 1 33 5051 S amp S 1970 77 23 43 43 23 246 246 514 194 Yes Solid 514 8 1 to 9 1 33 5052 S amp S 1978 84 23 43 437 23 246 246 514 194 186 Yes Solid 514 8 1 to 9 1 33 5059 S amp S 1948 69 207 55 60 20 255 260 56
4. judgment Start installation when you are fresh Be sure all federal state and local laws are obeyed with the installation For optimum performance and safety and to minimize potential damage to carb or other components use all mounting hardware that is provided and follow all installation instructions Motorcycle exhaust fumes are toxic and poisonous and must not be breathed Run motorcycle in a well ventilated area where fumes can dissipate IMPORTANT NOTICE Statements in this instruction sheet preceded by the following words are of A WARNING Means there is the possibility of injury to yourself or others special significance CAUTION Means there is the possibility of damage to the part or motorcycle NOTE Other information of particular importance has been placed in italic type S amp S recommends you take special notice of these items WARRANTY All S amp S parts are guaranteed to the original purchaser to be free of manufacturing defects in materials and workmanship for a period of twelve 12 months from the date of purchase Merchandise that fails to conform to these conditions will be repaired or replaced at S amp S s option if the parts are returned to us by the purchaser within the 12 month warranty period or within 10 days thereafter In the event warranty service is required the original purchaser must call or write S amp S immediately with the problem Some problems can be rectified by atelephone call and nee
5. 0 587 168 164 Yes Solid 560S 9 1 to 10 1 33 5060 S amp S 1970 Early 77 20 55 60 20 255 260 560 468 164 Yes Solid 560S 9 1 to 10 1 33 5061 S amp S 1977 Early 84 20 55 60 20 255 260 560 468 164 Yes Solid 560S 9 1 to 10 1 t Timing designation is function of zero lash 053 off base circle NOTE Cams can be used in other applications Call S amp S for information if you have any questions TDC Lifts are measured at the valve and are for reference only Overlap valve lifts must be checked on assembled motor Minimum valve to valve clearance is 040 CAMS for 1984 1999 BIG TWINS VALVE TIMING t VALVE DURATION LIFT TDC t REQUIREMENTS Part Cam Recommended Intake Exhaust Intake Exhaust Intake Exhaust Spring Tappet Name Application Open Close Open Close Spacing Type 33 5075 S amp S Stock 80 to 89 28 40 50 24 248 254 225 221 Hydraulic Bolt In 502 8 5 1 to 9 5 1 33 5073 S amp S Engines to 96 0 40 50 2 220 232 086 094 Yes Hydraulic 520 8 5 1 to 10 1 33 5072 S amp S 4 Bore Engines 5 55 52 5 240 237 126 Hydraulic 546 9 1 to 10 1 33 5076 S amp S 80 to 100 32 40 50 26 252 256 252 210 561 9 1 to 10 1 Hydraulic Hydraulic 33 5079 S amp S 98 to 113 34 55 60 29 269 269 260 220 Yes 562 10 1 to 10 5 1 33 5057 S amp S 1984 Present 32 64 64 32 276 276 250 220 Yes Solid or 563 10 5 1 or Higher Hydraulic l
6. Instruction 51 1026 06 01 10 SES Cycle Tue PROVEN 14025 Cty Hwy G PO Box 215 Copyright 2002 2003 2005 2006 amp 2010 by S amp S Cycle Inc Viola Wisconsin 54664 Phone 608 627 1497 Fax 608 627 1488 Technical Service Phone 608 627 TECH 8324 Technical Service Email sstech sscycle com C P roR MANS Website www sscycle com All rights reserved Printed in the U S A Installation Instructions for S amp S Cams for Panhead Shovelhead 8 Harley Davidson Evolution Engines DISCLAIMER S amp S parts are designed for high performance closed course racing applications and are intended for the very experienced rider only The installation of S amp S parts may void or adversely affect your factory warranty In addition such installation and use may violate certain federal state and local laws rules and ordinances as well as other laws when used on motor vehicles used on public highways especially in states where pollution laws may apply Always check federal state and local laws before modifying your motorcycle It is the sole and exclusive responsibility of the user to determine the suitability of the product for his or her use and the user shall assume all legal personal injury risk and liability and all other obligations duties and risks associated therewith The words Harley Harley Davidson H D Sportster Evolution and all H D part numbers and model designations are used in referen
7. ce only S amp S Cycle is not associated with Harley Davidson Inc SAFE INSTALLATION AND OPERATION RULES Before installing your new S amp S part it is your responsibility to read and follow the installation and maintenance procedures in these instructions and follow the basic rules below for your personal safety Gasoline is extremely flammable and explosive under certain conditions and toxic when breathed Do not smoke Perform installation in a well ventilated area away from open flames or sparks If motorcycle has been running wait until engine and exhaust pipes have cooled down to avoid getting burned before performing any installation steps Before performing any installation steps disconnect battery to eliminate potential sparks and inadvertent engagement of starter while working on electrical components Read instructions thoroughly and carefully so all procedures are completely understood before performing any installation steps Contact S amp S with any questions you may have if any steps are unclear or any abnormalities occur during installation or operation of motorcycle with a S amp S part on it Consult an appropriate service manual for your motorcycle for correct disassembly and reassembly procedures for any parts that need to be removed to facilitate installation Use good judgment when performing installation and operating motorcycle Good judgment begins with a clear head Don t let alcohol drugs or fatigue impair your
8. d no further course of action A part that is suspect of being defective must not be replaced by a Dealer without prior authorization from S amp S If it is deemed necessary for S amp S to make an evaluation to determine whether the part was defective a return authorization number must be obtained from S amp S The parts must be packaged properly so as to not cause further damage and be returned prepaid to S amp S with a copy of the original invoice of purchase and a detailed letter outlining the nature of the problem how the part was used and the circumstances at the time of failure If after an evaluation has been made by S amp S and the part was found to be defective repair replacement or refund will be granted ADDITIONAL WARRANTY PROVISIONS 1 S amp S shall have no obligation in the event an S amp S part is modified by any other person or organization 2 S amp S shall have no obligation if an S amp S part becomes defective in whole or in part as a result of improper installation improper maintenance improper use abnormal operation or any other misuse or mistreatment of the S amp S part 3 S amp S shall not be liable for any consequential or incidental damages resulting from the failure of an S amp S part the breach of any warranties the failure to deliver delay in delivery delivery in non conforming condition or for any other breach of contract or duty between S amp S and a customer 4 S amp S parts are designed exclusively
9. e outer valve spring when the valve is on the seat typically 1 490 to 1 520 for panheads and shovelheads and 1 800 for Evolutions Install the valve in the guide Then install the bottom collar top retainer and keepers Pull the top retainer tightly against the keepers While holding the valve assembly steady measure the distance between the lower valve spring seating surface and the outside step of the top retainer Record your information After you have measured all the valves find the shortest height This will become the installed height for all the valve springs C Once you have determined the installed height use shims to obtain the same installed height for all valve springs 020 is acceptable Extra shims are available through S amp S if needed D Before removing the retainers measure the distance from the bottom of the retainer to the top of the valve guide or valve seal Dimension B Figure 1 This distance must be 060 greater than the lift of the valve If not the guide must be shortened to obtain clearance Insufficient clearance between top collar and valve seal is a very common cause of early camshaft fatigue and valve seal failure Remove seal and grind guide here to obtain greater measurement B E Once the valve springs have been installed it is important to check for coil bind With valve fully open there must be a minimum of 060 additional valve travel available before either the inner or outer valve s
10. e valve guide or valve seal when the valve is completely open B The machining process required to prevent coil bind and maintain adequate seat pressures with stock springs can be difficult and expensive S amp S recommends our 630 lift high performance spring kit 93 2077 steel collars or 93 2078 titanium top collars for most Evolution engines Kits for higher lifts are also available S amp S offers several high lift spring kits for shovelheads and panheads The 550 lift kit 90 2053 aluminum collars fits 1948 early 1984 panheads and shovelheads The 590 lift kit 90 2060 steel collars fits 1948 early 1981 panheads and shovelheads The 90 2063 kit fits late 1981 1984 shovelheads NOTE S amp S also offers panhead and shovelhead kits with titanium top collars Shortening of the valve guide may be required Otherwise these kits virtually eliminate the need for machining C Because of its 560 lift an experienced engine builder should install our 560S cam for shovelheads The installation can be simplified by using one of the 590 lift valve spring kits mentioned in the preceding paragraph Moderate TDC lifts mean that in most existing high performance applications no additional valve to piston or valve to valve clearancing will be required Shortening of the valve guide for adequate top collar to guide clearance may be required 5 Valves and Pistons A A high performance camshaft increases the breathing capabilities of the engine by i
11. his procedure is not performed excessive oil can bleed off the cam followers and fill the pushrod tubes causing leakage To perform this modification thread an 8 32 tap into the oil passage hole in the gasket surface and turn the tap until it just starts to enter the cam follower hole Then screw an 8 32 x s allen head set screw in place to block the hole NOTE If hydraulic lifters are ever reinstalled these screw plugs must be removed 7 Cam Gear Measuring A Start by installing 105 pins 180 apart on the cam gear a rubberband will help hold them in one place B Use a micrometer to measure the assembly and make a note of the dimension Transfer the pins to the pinion gear and measure it also C Match the pinion gear to the size closest to it in the chart below The closer the sizing the less noise you will encounter D Install the pinion and cam dry use a new gasket and torque the cam cover in place Verify in four different spots that the cam slides easily and consistently across the pinion gear and check backlash at the same time E Once you have verified that the fit is proper lubricate everything and move on to final assembly GEAR DIAMETER CHART ea ara ra ue rar Jara 8 Camshaft Installation Procedure A Remove pushrods Pushrods can be removed from panheads and shovelheads by setting adjusters to shortest adjustment It is necessary to remove the rocker cover and rocker arm for pushrod removal and installation in a Evolut
12. ion engine B Remove stock camshaft Measure length of stock camshaft and new camshaft If lengths are not equal should be close to 3 025 change spacer shims to make up any difference Shovelhead and Evolution engines use same shims Camshafts for 1988 and later Evolution engines need to be shimmed to 3 075 4 050 longer because of a factory design change Many engine builders replace inner camshaft bearing when installing cam Refer to Harley Davidson service manual for correct procedure NOTE S amp S recommends that when installing high performance cams in 1992 and later big twin engines the inner camshaft bearing marked INA SCE 138 USA should be replaced with a Torrington B138 bearing AP part 292310 S amp S part 31 4009 The Torrington bearing has a higher radial load rating and is better able to handle increased stress of high performance cams Use of the stock 1992 and later inner camshaft bearing with high performance camshaft may result in bearing failure and cause serious engine damage C Install new cam and check for proper endplay Endplay for installed camshafts should be 005 to 015 D Install lifters and pushrods The longest pushrod is for front exhaust next longest pushrod is for rear exhaust and two shortest pushrods are for front and rear intakes E Adjust pushrods In all cases engine must be cold and lifter to be adjusted must be at lowest position for pushrod adjustment 1 Solid lifters All Engines a
13. lapsed shorten adjuster exactly to point where pushrod can be rolled between thumb and forefinger with minimum effort NOTE Some lifters with HL T Kit provide quieter operation if pushrod adjuster is shortened 3 to 6 additional flats from point where pushrod can just be turned by hand The additional travel that results may improve the ability of the hydraulic unit to fill with oil and operate at zero lash c Tighten locking nut against pushrod and confirm that pushrod adjustment remains correct d Rotate engine to place next pushrod at lowest point on cam and repeat procedure Repeat for remaining pushrods NOTE If hydraulic units contain oil allow sufficient time for lifter to bleed down before final adjustment is made Do not turn engine until lifter is fully bled down and adjustment has been made Valves could contact each other and cause damage 9 Valve Spring Installation Information A Installation of an S amp S high lift racing valve spring kit may require that the spring pocket of the head be machined to the proper diameter Lower valve spring collar should seat completely flat on cylinder head surface and lower coils of valve spring should not touch sides of spring pocket B Heads must be removed to check the installed spring height This is the distance from the bottom of the top retainer to the top surface of the lower valve spring collar where the spring rests on the head Dimension A Figure 1 This distance is the height of th
14. ncreasing the valve lift and or duration Valves that open higher for longer periods of time run a greater risk of contacting each other or the pistons If larger than stock diameter valves are used valve clearance problems are even more apt to occur B S amp S recommends a minimum of 040 clearance between the valves throughout their opening and closing cycles This can be checked with a 040 diameter wire inserted through the spark plug hole C Absolute minimum valve clearance between valves and pistons is 060 for the intakes and 080 for exhausts NOTE Due to the increased lift and duration installation of most high performance camshafts require that valve train clearances be checked and corrected if needed Consult cam specifications on first page to determine which checks must be performed 4 Failure to follow instructions and perform any required clearancing procedures may result in insufficient clearances between valve train parts and other engine components causing damage to engine 6 Other Information A All S amp S cams are ground to fit needle roller style crankcase cam bearings If an S amp S cam is installed in an early set of big twin crankcases with a bushing style cam bearing then the bushing must be reamed to fit the bearing diameter of the camshaft B In all 1948 to early 1984 installations where solid lifter style tappets are used S amp S recommends plugging the hydraulic lifter oil feed holes in the tappet blocks If t
15. prings are coil bound solid If this clearance does not exist the valves must be sunk deeper in the head by grinding the valve seats The typical installed valve spring height of 1 520 for panhead engines and shovelhead engines and 1 800 for Evolution models should not be increased by more than 040 F Always check for clearance between the valve spring retainer and the inside face of the rocker arm This is most critical when the valve is fully closed Rocker arms are designed to clear specific spring diameters so it is important that the proper rocker arm retainer combination is used Insufficient clearance can also be the result of improper rocker arm geometry and or incorrect valve stem length
16. st kits reduce the likelihood of lifter collapse at high rpm Kit part number for 1984 1985 Evolution models with stock lifters and all engines with S amp S 33 5342 lifters introduced in late 1998 is 33 5338 Kit 33 5339 fits 1986 up Evolution lifters and older S amp S lifters 33 5340 and 33 5341 2 Pushrods A Most high performance camshaft installations require the installation of a solid lifter conversion kit or adjustable pushrods Adjustable pushrods give the flexibility required to compensate for any differences in cam base circle dimensions gasket thickness and cylinder head modifications If pushrods are changed depending upon their design it may be necessary to do some additional pushrod to pushrod tube and pushrod to cylinder head clearancing This clearancing is necessary because the pushrod angle from the lifter to the rocker arm changes due to additional lift of the camshaft All S amp S pushrods with tubing diameters of s or less can be used with any S amp S cam without additional clearancing It is recommended that these clearances be checked if another pushrod type is used Consult the pushrod installation instructions S amp S makes adjustable chrome moly steel pushrod kits for all big twin applications 3 Rocker Arms A Additional camshaft lift causes additional rocker arm travel Older engines should be checked to see if the rocker arm ends that contact the valve are irregular or worn excessively If they appear serviceable the
17. y should then be checked to see how they contact the end of the valve during a complete opening and closing cycle The extra travel of the valve caused by a high lift cam may cause the rocker arm to contact the valve improperly at the full open position If irregular contact due to excessive wear is present the rocker arm should be replaced B Additional rocker arm travel may reduce the existing clearance between the rocker arm and rocker cover and between the rocker arms and the top valve spring collar This is of particular concern in instances where the valves have receded deep in the head due to worn valve seats Both clearances must be checked and corrected before final assembly Machinist s blue or putty can be used to check for contact NOTE S amp S recommends the use of roller rockers in high lift applications to reduce valve stem and guide wear caused by elevated side loads Some degree of side loading occurs with all lifts The greater the lift the greater the amount of side load 4 Valve Springs A Valve springs and top spring collars travel farther with a high lift cam They must be spaced to prevent the spring from coil binding and to prevent the top collar from contacting the valve guides With valve fully open there must be a minimum of 060 additional valve travel available before any coils of the inner or outer valve springs contact each other A minimum clearance of 060 must be maintained between the top valve spring retainer and th
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