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 Specifications

Piston Ring Gap Top Compression Ring 0.008 - 0.014
Wear Limit 0.025
Second Compression Ring 0.022 - 0.031
Wear Limit 0.055
Oil Control Steel Rails 0.010 - 0.030
Wear Limit 0.065
Piston Ring Side Clearance Compression Rings 0.0016 - 0.0033
Wear Limit 0.004
Oil Ring (Steel Rails) 0.0018 - 0.0079
Wear Limit 0.0085
Piston Ring Width Compression Rings 0.0579 - 0.0586
Oil Ring (Steel Rails) 0.0176 - 0.0186