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
Oil Ring:
Side Clearance 0.027-0.196 mm (0.0017-0.0077 inch)
Compression (Top) 0.03-0.08 mm (0.0012-0.0031 inch)
Compression (Bottom) 0.030-0.080 mm (0.0012-0.0031 inch)
Ring Gap:
Compression (Top) 0.13-0.28 mm (0.0051-0.0117 inch)
Compression (Bottom) 0.25-0.40 mm (0.0093-0.0157 inch)
Oil Ring (Steel Rail) 0.13-0.28 mm (0.0051-0.0117 inch)