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

Compression Rings
Thickness 1.5 mm (0.0590 in.)
Ring Groove Clearance 0.02-0.04 mm (0.0008-0.0015 in.)
Ring Gap 0.30-0.50 mm (0.0118-0.0196 in.)
Oil Ring
Thickness 3.0 mm (0.1181 in.)
Ring Groove Clearance 0.01-0.03 mm (0.0004-0.0012 in.)
Ring Gap 0.40-1.40 mm (0.0157-0.0551 in.)