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

Compression Ring

Groove Clearance
Production
Top and 2nd Ring 0.0012"-0.0032"
Service Limit (High Limit Production) 0.001"

Gap
Production
Top Ring 0.0010"-0.0020"
2nd Ring 0.0018"-0.0026"
Service Limit (High Limit Production) 0.010"

Oil Control Ring

Groove Clearance
Production 0.002"-0.007"
Service Limit (High Limit Production) 0.001"

Gap
Production 0.010"-0.030"
Service Limit (High Limit Production) 0.010"