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S&S Cycle Bore Big Twin Stroker Kit 1936–1999 3 7/16 - 3 1/2 User Manual

Page 19

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Insufficient clearance between piston and valves may cause them to contact each other during operation resulting in damage to piston
and valve train components.

L. If less than .060" clearance in any area exists, grind area until proper clearance is achieved.

7. Final Top End Assembly and Engine Installation

NOTE: All previous steps must be completed. For knucklehead, panhead and shovelhead engines, we recommend installing cylinders without heads
bolted to cylinders for two reasons:

1. Combined weight of cylinder and cylinder head makes assembly cumbersome and hard to handle during installation.
2. Separate installation of cylinders and cylinder heads permits more leeway for adjustment to achieve a better manifold fit.

CAUTION