S&S SH Series - Page 19

SPECIFICATIONS & WEAR LIMITS
P & SH SERIES ENGINES
Description Specication Wear Limit
Rocker Arm
Shaft in bushing .0007"-.0018" .0035"
Bushing t in rocker arm (tight) .0012"-.0032" <.0012"
Rocker arm endplay .004"-.015"
Cylinder Head
Valve to guide t intake .0012"-.0020" .0035"
Valve to guide t exhaust .0017"-.0025" .0040"
Valve guide in head (tight) .0015"-.0030" <.0015"
Valve seat in head (tight) .0050"-.0070" <.0050"
Seat width intake .031" .041"
Seat width exhaust .047" .057"
Valve stem protrusion 2.045"-2.060" 2.080"
Pistons
Fit in cylinder (forged) .003"-.004" .0055"
Compression ring gap 3½" bore .014" - .022" .t030"
Compression ring gap 3⁄" bore .017"-.026" .030"
Oil ring gap .015"-.035" .050"
Description Specication Wear Limit
Connecting Rods
Side play .006"-.036" .040"
Wristpin in rod .0005"-.001" .002"
Crankpin running clearance .001"-.0012" .002"
Flywheels
Run out at bearing .0005"-.001" .006"
Timken endplay .001"-.005" .005"
Pinion bearing t .0004"-.001" .002"
Cam Chest
Breather gear endplay .005"-.015" .016"
Breather clearance .0015"-.003" .004"
Camshaft in bushing .0007"-.002" .003"
Camshaft endplay .005"-.015" .016"
Pinion shaft in bushing .001"-.0025" .0035"
Bushing t in gear cover (tight) .0007"-.0023" <.0006"
Oil pump shaft .0005"-.0025" .0035"
Lifters
Lifter t in guide .0006"-.0017" .0022"
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OWNERS MANUAL — S&S® KN, P, AND SH-SERIES ENGINES