- S&S Cycle
Contents
1. iones piece iate eter ties even 90 2020 SQ 50 1000 Exhaust 1948 84 BT 15 Flat washer 46 H D 6016 6702 ss sseeee 50 7034 1 720 H D 18086 80 18086 81 18089 80 18089 81 10990 2022 16 Rocker cover gasket 1966 84 BT H D 17540 69 1 720 005 stem diameter ceccee eens 90 2031 OEEO E E N 90 4040 3 Valve seats Tiro atem TTE 90 4064 Intake 1 940 17 Intake manifold See page 5 72 Standard H D 418020 79 cene 90 2017 18 Manifold seal 002 dl N A O ring 1955 78 BT H D 427060 55 3 010 OVGISIZE nc E E Ev Dr e RERO 90 2117 Leer aue eee eT eee eee TC eT Te ERAS TE 50 8046 Exhaust 1 750 157 T eae yh M 50 8132 Standard H D 418010 79 18055 66B 7990 2018 Band 1979 84 BT H D 427062 78 4000 Neise cotes eciue Erde 90 2119 each isses 62016 0238 POIO OVEISIZE i i nen bnwienas wire sam taies 90 2121 IO PACK sese 62816 0245 4 Valve guide cast 1980 84 BT 19 Manifold mounting clamp Intake or Exhaust O ring type heads 1955 78 BT H 0 27063 57 09416 0230 APA ie aan ean e 7190 2240 Band type heads 1979 85 BT H D 427063 78 27063 80 8016 0231 4 001 H D 418109814 o oo s 65090 2241 20 Head bottassembly stainless 1948 84 BT 002 H D 18108 81A 0 0 ccc ccc cece ee 6890 2242 Includes head bolt amp washer H D 16814 77 6469HW 003 H D 518107 814 sss 62090 2243 I pack sees 62893 32. is optional NOTE When external oil drain option is specified S amp S blocks stock style internal oil returns in each head prior to assembly and machines external passages to accommodate 27 NPT fittings for external return Fittings are provided but must be installed by customer who must also provide and install the lines themselves Return line from each cylinder head should be joined with tee not provided approximately at level of crankcase Third line must then be attached to tee and routed to primary oil scavenge passage located between oil pump and center of crankcase See Picture 1 f engine is ever converted to stock internal oil return heads must be disassembled and internal oil passage plugs removed External passages must also be blocked with 27 NPT pipe plug Picture 1 Primary scavenger fitting location NOTE Other S amp S products such as stroker kits stock replacement and Sidewinder big bore cylinders Super series carburetors chrome moly steel pushrods and solid lifter conversion kits can enhance the performance of shovelhead engines Many such parts are available in a Hot Set Up Kit at cost less than that of individual items purchased separately KIT CONTENTS e One set of cylinder head assemblies with valves valve springs valve guide seals and keepers installed Heads are also available bare e Rocker housing gaskets head gaskets and exhaust flange gaskets Hardware for rocker housings top engine mount carb
3. 024 004 H D 18106 814 csse 62890 2244 21 a Head Bolt each sse 93 3024 S 006 H D 18110 81A eee 62890 2246 b Head bolt washer 1936 84 BT pi P 62090 2249 For part 90 3024 90 3026 amp 890 3040 encase 9 93 3025 5 Valve guide seal intake or exhaust 22 Head gasket copper 1966 84 BT 1981 84 BT H D 18000 81 each 62090 2019 3746 amp 3 bore H D 16770 66B each 93 1041 D ee 62890 2157 TOpack sos eee 93 1061 6 Valve spring shim Late 1981 84 BT 378 DOR C00 essc teen Fb ER Er hee Vet hac atit 93 1042 005 x 765 x 1 500 csse unn 50 7121 177771 POOE EEEO OEE 93 1062 015 x 765 x 1500 Lu 50 7122 23 Fitting oil return Ys 27 pipe H D 4663533 65 31 2019 025 x 765 x 1 500 each cce 50 7123 24 Plug oil return 27 pipe each sese 50 8331 Er NERA 50 7160 j 7 SPD 50 1015 7 Valve spring kit Late 1981 84 N A No longer available Includes springs top amp bottom collars keepers shims 590 lift steel top collars cc cece eee eeeee 90 2063 590 lift titanium top collars cece eee 90 2064 8 Valve spring keeper intake or exhaust 1936 84 BT H D 18228 36 each sss 90 2037 S I 50 7165 9 Screw SH 6 18 X 1 4 D 427084 eee 50 0101 S amp S CYLINDER HEAD KITS FOR 1966 84 BIG TWIN ENGINES 10 Loc
4. Instruction 51 1060 S amp S l Cycle Vue oak te 14025 Cty Hwy G PO Box 215 Copyright 1997 1999 2005 Viola Wisconsin 54664 2006 2010 2012 2013 Phone 608 627 1497 Fax 608 627 1488 Technical Service Phone 608 627 TECH 8324 Technical Service Email sstech sscycle com Website www sscycle com by S amp S Cycle Inc All rights reserved Printed in the U S A Installation Instructions S amp S Super Stock Cylinder Heads for 1966 1984 Shovelhead Models S amp S Super Stock Cylinder Head Kits for shovelhead models contain all parts needed for installation of heads Cylinder heads are available for 32 and 3 bore engines equipped with rubberband or O ring type manifolds 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
5. after 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 a telephone call and need 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 failur
6. as been run and reached normal operating temperature B For next 500 miles engine may be taken to 3500 RPM or approximately 60 70 MPH depending upon gearing for brief periods Speed should be varied and lugging and heavy traffic avoided Change oil and filter at end of first 500 miles C Modest increases in speed are permissible during next 1500 miles Engine should not be given full throttle and heavy loads such as trailers and sidecars avoided Some operation at in town speeds 40 45 MPH is recommended although lugging and heavy traffic should still be avoided Change oil and filter at 500 mile intervals until 2000 miles D The following is mandatory at 2000 miles and thereafter HAVE FUN Oil and filter should be changed every 2000 miles after break in more often if oil appears dirty or engine is subjected to extreme temperatures or dusty conditions ridden for only short periods of time or frequently operated in heavy traffic S amp S Super Stock Cylinder Heads Replacement Parts 1 Gylinderhead c cece cc ccecee cess ee eaeeeeenens See Chart Below 13 Flat washer 746 x Ae X Ye H D 6495HW 50 7064 2 Valves 14 Rocker cover mounting screw 1966 84 BT itas Hex head 46 18 x 112 H D 2818 each 50 0109 1 950 H D 18075 80 18075 81 18078 80 18078 81 OOK ORIRE E E 50 0196 re 9199 2015 Hex head 4e 18 x 214 H 0 3501 each 50 0104 1 950 005 5
7. curate torque readings and possible damage to cylinder head caused by thread seizure lubricate head bolt threads with antiseize compound such as Permatex Anti Seize Lubricant before installation S amp S has received reports of thread damage associated with other lubricants such as engine oil on head bolt threads 3 Install Rocker Housings A Apply assembly lube to valve tips also to areas indicated See Pictures 2 amp 3 below B Clean gasket surfaces of cylinder heads and rocker housings with lacquer thinner Remove residue with clean dry cloth C Rocker housing gaskets currently supplied by S amp S have factory applied silicone on one side It may face either up or down Apply thin film of gasket sealant of choice to other side and allow to cure per manufacturer s instructions Apply assembly lube to areas indicated by arrows Picture 2 Picture 3 NOTE S amp S has had good results with spray sealants such as Copper Coat and Permatex High Tack Regardless of type or brand avoid excessive sealant which can enter engine and obstruct critical oil passages Reduced oil circulation caused by oil passage obstruction can cause extensive engine damage not covered under warranty D Place gaskets and rocker housings on cylinder heads NOTE To maintain rocker arm in correct position some engine builders place rocker housing upside down on flat surface and lower cylinder head onto them Assemblies can then be turned over for installation o
8. d open flame 2 Inspect and clean parts A Remove rocker housing assemblies from cylinder head Disassemble and inspect as explained in Harley Davidson Service Manual NOTES e Pay particular attention to rocker shaft fit in bushings and condition of rocker arm surface that contacts valve tip Install new shafts or bushings and reface or replace rockers as needed e Unless top end has been rebuilt recently and is known to be in good condition S amp S recommends cleaning and inspecting pistons and cylinders to determine if wear is within acceptable limits Regardless of finding light cylinder hone and new piston rings will prove beneficial for most engines having more than a few thousand miles of service B Clean housings and other parts thoroughly with solvent and blow compressed air through oil passages NOTES e Leaking oil line fittings should be removed and reinstalled with PTFE plumber s tape or other thread sealant Reassemble rocker assemblies and housings according to Harley Davidson Service Manual using new rocker shaft o rings Lubricate o rings with assembly lube or light grease to prevent damage during installation Cleanoilfeed lines in solvent and blow through with compressed air to remove possible debris and solvent residue Thoroughly clean head bolt threads with solvent and wire brush Replace bolts that are stretched or otherwise damaged and test fit by threading into heads before installation To prevent inac
9. e 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 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 INTRODUCTION S amp S Super Stock Cylinder Heads for shovelhead models are designed to fit all 1966 1984 shovelhead engines as well as earlier panhead and knucklehead lower ends equipped with shovelhead cylinders and cylinder heads The exterior dimensions of S amp S cylinder heads for shovelhead models are the same as stock With a few minor exceptions no modification should be necessary when replacing stock cylinder heads with S amp S heads NOTE To reduce exhaust leakage S amp S exhaust ports feature tight fit around the exhaust pipe stub This may require grinding stubs to reduce O D slightly Because of variations in castings minor shimming of the top engine mount may also be required NOTE Some shovelhead rocker housings have thicker walls which reduce clearance for top valve spring retainer Remove material from inside of rocker housing to obtain minimum clearance of 060 between housing and S amp S top retainer To maximize rocker housing gasket surface area relief should be cut at angle parallel to direction of valve travel rather than vertical Remove least amount of mate
10. er assemblies Adjust pushrods according to manufacturer s instructions and install cover retainer clips D Install carburetor air cleaner and support bracket according to manufacturer s instructions Fuel supply and overflow lines must not contact hot surfaces which could melt line resulting in gasoline leakage and possible fire hazard All clamps must be tight to prevent gasoline leak Refer to warnings on page 2 concerning gasoline hazards E Using gaskets lock washers and socket head cap screws provided install exhaust Exhaust system must also be bracketed to frame for adequate support F Gap and install spark plugs Heads accept standard 14 1 25mm 34 reach sparkplugs Camside sparkplug in dual plug heads will usually be same heat range as other G Start motorcycle and observe for gasoline and oil leaks P Tuning A Carburetor Because S amp S heads will probably flow significantly more air than heads removed carburetor may require larger jets for best performance Consult carb manufacturer s instructions for tuning procedure B Ignition Timing No adjustment should be required for single spark plug cylinder head Overall ignition timing should be retarded 5 10 degrees in most dual plug applications In general excessive ignition advance will cause engine to kick back against starter during start up and buck when ridden at steady speed with partial throttle An advanced condition can also cause pinging or ignition k
11. f hardware E Determine whether 1 or 277 bolt is required in rear camside position See Figure 3 page 4 and discard other Place required bolt with remaining 54e 18 x 272 bolts and apply Loctite 242 blue or equivalent to threads of each Install and tighten in X pattern to 15 18 ft lbs See Picture 4 next page 4 Install Cylinder Heads A Thoroughly clean cylinder and cylinder head gasket surfaces with lacquer thinner Remove residue with clean dry cloth Apply thin coat of anti seize compound such as Permatex Anti Seize Lubricant to head bolt threads and area of bolt head that contacts cylinder B Place head gasket on rear cylinder Confirm that oil passage and head bolt openings line up correctly C Place rear head on cylinder and loosely install two head bolts D Apply PTFEtape or other thread sealantto oil line fittings in crankcase and rocker housings Install new rubber sleeves on oil lines as needed and place overhead oil feed line between crankcase and rocker housing Loose head bolts will allow head to be raised eliminating need to bend oil line See Picture 5 next page Loosely install other head bolts Repeat procedure for front head and install remaining oil line between rocker housings Picture 4 Picture 5 NOTE S amp S has encountered interference between head bolts and cylinder with some imported aftermarket cylinders S amp S head bolts 93 3024 10 each required will usually solve problem E Inser
12. k washer 54e H D 7041 sees 7032 i h 2e i e iis 7 ner Engine Year T Complete with Valves amp 590 Springs Assembled Exhaust pipe gasket 1966 84 BT H D 653834 68A and Type Aluminum Finish Black Powdercoat Finish CON iiis es 93 1004 S 90 1496 90 1596 I 93 1075 h g 90 1497 90 1597 rin 7 356 Dual Plug 90 1491 el 12 Head mount bolt 746 14 x 1 4 H D 3782 each 50 0171 ODOC PT 50 0228 icum 90 1498 90 1598 n 90 1499 90 1599 an 354 Dual Plug 90 1488 O o ELE to Harley eis ond inibi a i d purposes Special Order 90 1490 only We In no way are implying that any o yoe s PIOGUCIS UE Use this special order part number to order assembled or unassembled cylinder heads with spring original equipment parts or that they are equivalent to the corresponding options and special finish Front or rear heads available by special order Harley Davidson part number shown Special Order Download the Special Order Form at sscycle com soforms 10
13. nock and possible piston damage Some symptoms may not be noticeable if an electronic ignition with a soft advance curve is used Excessive ignition retard causes sluggish performance and severe overheating with possible subsequent damage to the engine and must also be avoided Immediate or rapid exhaust pipe discoloration is usually a sign of retarded ignition timing Pinging or ignition knock can be an early sign of detonation and possible impending engine damage Should pinging occur the throttle must be backed off and the cause determined and corrected Excessive retard is less obvious but equally destructive For that reason final timing should be confirmed with a timing light or other accepted procedure Incorrect ignition timing can cause extensive engine damage not covered under warranty Break in N Because of tight fit of new valves and guides engine should be ridden 1000 2000 miles before subjected to excessive heat caused by traffic heavy load high speed operation etc If rings or pistons replaced break in as follows A First 50 miles are critical for new rings and pistons Most engine damage occurs during this period Keep heat down by avoiding heavy traffic and not exceeding 2500 RPM or approximately 50 60 MPH depending upon gearing during this time Vary speed and do not lug engine Change oil and filter at 50 miles NOTES S amp S recommends that the cylinder base nuts and head bolts should be retightened after engine h
14. 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 reference 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 rem
15. oved 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 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 special significance A WARNING Means there is the possibility of injury to yourself or others 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 there
16. rial possible to obtain proper clearance See Figures 1 amp 2 below CORRECT INCORRECT Figure 1 Figure 2 Shading indicates areas most likely to require modification Valve compartment of rocker housing cross section If required for spring retainer clearance Relief should be cut at an angle relief should be cut at an angle approximately the same angle as not vertical the valve travel not vertical Remove least amount of material possible to obtain proper clearance S amp S cylinder head kits include all parts needed to install cylinder heads Customer must supply related replacement items such as intake manifold o rings pushrod cover seals and oil line sleeves Except in fresh low mileage engines S amp S recommends checking piston and cylinder wear at time of cylinder head installation Even if piston replacement is not required honing cylinders and replacing piston rings is often beneficial Features of S amp S Cylinder Heads for Shovelhead Models e Intake ports feature a directional vane and other changes to increase air flow At approximately 135 CFM flow in S amp S heads is 10 CFM greater than best stock heads tested by S amp S Because of variance in OEM castings in many cases gain will be substantially higher e Available with counterbore for 3 2 stock bore or 3 big bore cylinder e Accept cam cams with valve travel of 590 without coil bind NOTE It is the engine builder s responsibility to confirm that adequa
17. support bracket and exhaust pipes is also provided INSTALLATION STEPS 1 Strip Motorcycle 2 Clean and Inspect Parts 3 Install Rocker Housings 4 Install Cylinder Heads 5 Replace Parts Removed for Installation Installation of S amp S Super Stock Cylinder Heads for shovelhead models is essentially the same as stock No special tools other than those used in normal top end repair are required In the instructions that follow references are made to procedures described in an authorized Harley Davidson Service Manual For this reason a Service Manual for the appropriate year group and model should be available during installation Read all instructions thoroughly before beginning and proceed only after they are completely understood 1 Strip motorcycle Remove battery gas tanks exhaust pipes top engine mount carburetor intake manifold pushrod assemblies and all other parts required to remove cylinder heads Remove cylinder heads referring to Harley Davidson Service Manual as necessary Sparks from motorcycle electrical system can ignite gasoline fumes To prevent sparks as well as prevent electric starter from becoming engaged inadvertently and causing personal injury disconnect battery and remove from motorcycle before proceeding Gasoline is toxic when inhaled extremely flammable and explosive under certain conditions Do not smoke around gasoline and perform installation in a well ventilated area away from sparks an
18. t manifold between intake ports insuring that fit is correct and gaps between manifold and cylinder heads equal on both sides See Picture 6 below left At this point cylinder heads may be rotated slightly for best manifold fit F Remove manifold and tighten head bolts as described in Harley Davidson Service Manual Recommended torque is 65 ft Ibs eo y E m E 5 DN 0i i oc Q7 A ny c T NA a SA L v LUE Picture 6 Picture 7 NOTE Several head bolts are difficult to reach Curved wrenches are helpful They are available from Mac Tools Craftsman and other sources 5 Replace Parts Removed for Installation A Replace manifold o rings or bands as needed and install manifold B Remove nuts from drive side of intake rocker shafts taking care not to misplace thin washers Install top engine mount with 74 14 x 1 bolts provided Use washers to fill any gap between engine mount and cylinder heads or frame In some instances customer provided shims may be required to completely fill gap See Picture 7 above right Once proper fit has been established remove bolts apply Loctite 242 to threads and reinstall Tighten bolts in head to 54 ft lbs Frame bolt should be tightened according to torque specification chart in Harley Davidson Service Manual Replace rocker shaft nuts and washers Failure to properly shim engine mount can cause vibration and stress resulting in damage to engine or frame C Install pushrods with cov
19. te valve to valve and valve to piston clearances exist S amp S recommends a 040 minimum valve to valve clearance and 060 minimum valve to piston clearance S amp S cylinder heads for 1966 84 shovelhead engines will accomodate cam shafts with valve travel of up to 590 and TDC lifts of up to 210 on both valves Under no circumstances should engine be forced if resistance is encountered while rotating flywheels to check clearances Forcing engine or failing to establish proper clearances can result in extensive engine damage not covered under warranty Shape and volume of combustion chambers is same as stock Valves and valve seats are compatible with present day fuels 316 18 cap screws are provided for rocker housing installation NOTE Rocker arm housings must be installed with 6 18 cap screws Harley Davidson rocker housing studs are different thread NOTE Some rocker housings require 4e 18 x 112 bolts in rear cam side position of both rocker housings others utilize 6 18 x 212 bolts in all locations See Figure 3 below S amp S kit includes both lengths Extra 112 or 212 bolts will not be used All rocker housings utilize 172 bolt in center location between pushrods Figure 3 Attempting to install Harley Davidson or similar rocker housing studs in S amp S Super Stock Cylinder Heads for shovelhead models will result in damage not covered under warranty e Machining for dual spark plugs and external oil drains
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