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 Diameter (Std.) 2.9520-2.9524 inches
Piston Clearance 0.0004-0.0009 inches
Piston Pin Diameter 0.7478-0.7480 inches
Piston Pin To Piston Clearance 0.0004-0.0009 inches
Piston Ring End Gap:
Top 0.006-0.012 inches
Second 0.012-0.018 inches
Oil 0.008-0.028 inches

Piston Ring To Groove Clearance
Top Ring 0.0012-0.0024 inches
Second Ring 0.0012-0.0022 inches