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

Piston Rings
Ring Width
- Compression (Top) 1.460-1.490 mm (0.05748-0.05866 inch)
- Compression (Bottom) 1.460-1.490 mm (0.05748-0.05866 inch)
- Oil Ring Side Seal-Snug Fit
- Service Limit Side Clearance 0.015 mm MAX (0.0006 in MAX)
Ring Gap
- Compression (Top) (In Gage) 0.17-0.33 mm (-in)
- Compression (Bottom) (In Gage) 0.3 0.55 (-in)
- Oil Ring (Steel Rail) (In Gage) 0.15-0.65 (0.00591-0.02559 inch)
Side Clearance
- 1st Ring 0.030-0.080 mm (0.00118-0.00315 inch)
- 2nd Ring 0.030-0.080 mm (0.00118-0.00315 inch)