Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Piston Ring, Engine

Piston Compression Ring End Gap -
Production-Top - Measured in Cylinder Bore
0.009-0.017 in.
Piston Compression Ring End Gap -
Production-2nd - Measured in Cylinder Bore
0.017-0.027 in.
Piston Oil Ring End Gap - Production - Measured in cylider bore 0.007-0.029 in.
Piston Compression Ring End Gap - Service-Top - Measured in Cylinder Bore 0.009-0.0196 in. maximum
Piston Compression Ring End Gap - Service-2nd - Measured in Cylinder Bore 0.0173-0.03 in. - Maximum
Piston Oil Ring End Gap - Service Limit - Measured in Cylinder Bore 0.007-0.032 in. - Maximum
Piston Compression Ring Groove Clearance - Production-Top 0.00157-0.0033 in.
Piston Compression Ring Groove Clearance - Production-2nd 0.002-0.0034 in.
Piston Oil Ring Groove Clearance - Production -0.0003 to +0.0069 in.
Piston Compression Ring Groove Clearance - Service-Top 0.00157-0.0033 in. - Maximum
Piston Compression Ring Groove Clearance - Service-2nd 0.002-0.0034 in. - Maximum
Piston Oil Ring Groove Clearance - Service Limit -0.0003 to +0.0069 in. - Maximum