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

End Gap
Top Ring
Standard 0.2-0.3 mm (0.0079-0.0118 inch)
Maximum Limit 0.7 mm (0.0276 inch)
Second Ring
Standard 0.2-0.3 mm (0.0079-0.0118 inch)
Maximum Limit 0.7 mm (0.0276 inch)
Oil Ring
Standard 0.2-0.7 mm (0.0079-0.0275 inch)
Maximum Limit 1.8 mm (0.0708 inch)

Groove Clearance
First 0.03-0.07 mm (0.0012-0.0027 inch)
Second 0.02-0.06 mm (0.0008-0.0023 inch)