1984-1999 Harley-Davidson Evolution Engines Replacement Cylinder Heads Installation Instructions


Filed Under (Harley Davidson) by admin on 28-10-2010

Installation of an S&S Super Stock cylinder head kit is easy and can be performed by any Harley-Davidson┬«repair shop equipped to do engine overhauls. No special tools other than those used in normal overhaul repair work are required. Read instructions thoroughly before starting work. When they are completely understood proceed with installation. 1. Remove Components and Inspect Parts Follow procedures outlined in appropriate Harley-Davidson┬« service manual to prepare motorcycle for top end service. NOTE: Disconnect batteryand drain all gasoline from gas tanks beforedoing any work. 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. A. Remove gas tanks and all other parts required to perform top end service. B. Remove carburetor, rocker covers, pushrods and pushrod tube assemblies, cylinder heads and cylinders. Also remove piston rings from piston. Do not remove pistons. NOTE: Be careful not to introduce any dirt or other foreign material into crankcase during disassembly of engine. Metal filings, dirtand any other foreign contamination in engine may cause premature wear and/or irreversible damage to bearings and other internal engine components. C. Thoroughly clean and inspect all parts that are to be reused. Any parts that show signs of wear or damage should be replaced. WARNING CAUTION 2. Check Piston Alignment in Cylinder Bore The purpose of this procedure is to check for and correct possible piston misalignment in the cylinder bore. During normal manufacturing, engine components such as crankcases, cylinders, and connecting rods can be machined to dimensions within factory specifications but on the extreme ends of the tolerance range. Sometimes these components when combined together form an assembly that is borderline or actually “out of print”. The worst result isthat the pistons can run cocked in the cylinder bores causing the connecting rods to thrust to the sides exerting unnecessary stress on the pistons, rings, rod bearings and other related parts. This procedure is not the same as blue printing, but it provides almost the same result. We feel that not enough emphasis is given to checking the piston alignment in the cylinder bore.