Operation CHARM: Car repair manuals for everyone.
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Piston Ring, Engine

Piston Piston diameter Coded grade 1 3 5035-3.5043 inch
Coded grade 2 3.5039-3.5048 inch
Coded grade 3 3.5043-3.5051 inch
Piston-to-bore clearance 0.0005-0.0009 inch
Piston bore diameter (piston) 0.8270-0.8275 inch
Ring groove width Compression (top) 0.0484-0.0490 inch
Compression (bottom) 0.0602-0.0608 inch
Oil ring 0.1192-0.0120 inch
Piston pin Length 2.382-2.365 inch
Diameter 0.8272 inch
Pin-to-piston clearance 0.0001-0.00003 inch
Pin-to-rod clearance Standard 0.0001-0.0007 inch
Service limit 0.0013 inch
Side clearance Compression (top) 0.0015-0.0029 inch
Compression (bottom) 0.0015-0.0033 inch
Oil ring Snug fit
Service limit 0.0039 inch
Piston Ring Gap Compression (top) - gauge diameter 0.0039-0.0098 inch
Compression (bottom) -gauge diameter 0.0106-0.0165 inch
Oil ring (steel rail) - gauge diameter 0.0059-0.0255 inch
Compression (top) - service limit 0.0196 inch
Compression (bottom) -service limit 0.0255 inch
Oil ring (steel rail)-carving limit 0.0354 inch