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

DIMENSIONS
Ring Gap - Compression Ring
Top 0.25-0.41 mm (0.00098-0.00161 Inch)
Bottom 0.38-0.64 mm (0.00149-0.0025 Inch)
Oil Ring 0.15-165 mm (0.0059-0.0064 Inch)