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 End Gap
Top: 0.15 - 0.25 mm (0.0060 - 0.0098 inch)
Second: 0.25 - 0.35 mm (0.0099 - 0.0137 inch)
Oil: 0.20 - 0.70 mm (0.0079 - 0.0275 inch)
Maximum: 1.0 mm (0.0394)

Ring Diameter 20.987 - 20.993 mm (0.8263 - 0.8264 inch)