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

Compression Ring Gap 1st Ring (Standard) 0.30-0.50 mm (0.0118-0.0195 in)
2nd Ring (Standard) 0.30-0.50 mm (0.0118-0.0195 in)
Oil Ring (Standard) 0.40-1.40 mm (0.0156-0.0546 in)
Compression Ring Clearance Standard 0.02-0.04 mm (0.0008-0.0016 in)