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)

Or, hide this message: temporarily or permanently

Piston Ring, Engine

Piston Ring Compression Top Groove Clearance 0.0012 - 0.0029 Inch (in)
Second Groove Clearance 0.0012 - 0.0029 Inch (in)
Top Ring Production Gap 0.012 - 0.018 Inch (in)
Top Ring Service Limit Gap 0. 0 18 - 0.027 Inch (in)
Second Ring Production Gap 0. 0 17 - 0.025 Inch (in)
Second Ring Service Limit Gap 0.026 - 0.039 Inch (in)
Piston Ring Oil Control Ring Groove Clearance 0.002 - 0.008 Inch (in)
Production Gap 0.0098 - 0.0299 Inch (in)
Service Limit Gap 0. 0 15 - 0.045 Inch (in)