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 logical successor to CHARM, I recommend you try it!

Link: lemon-manuals.la

Piston Ring, Engine

Piston Ring

MEASUREMENT SPECIFICATIONS
Ring To Groove Clearance:
1st Compression 0.05 to 0.10 mm
2nd Compression 0.05 to 0.10 mm
Ring Fitted Gap:
1st Compression 0.3 to 0.5 mm
2nd Compression 0.40 to 0.65 mm
Oil Control Rails 0.38 to 1.40 mm
Oil Control Ring Width 3.00 mm - maximum