Operation CHARM: Car repair manuals for everyone.

Piston Ring, Engine

Piston Ring Compression Top Groove Production Clearance 0.0012-0.0029 Inch (in)
Second Groove Production Clearance 0.0012-0.0029 Inch (in)
Top Ring Production Gap 0.012-0.018 Inch (in)
Top Ring Service Limit Gap 0.018-0.027 Inch (in)
Second Ring Production Gap 0.017-0.025 Inch (in)
Second Ring Service Limit Gap 0.026-0.039 Inch (in)
Piston Ring Oil Control Production Groove Clearance 0.002-0.008 Inch (in)
Production Gap 0.0098-0.0299 Inch (in)
Service Limit Gap 0.015-0.045 Inch (in)