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
Ring groove width
Top
Standard or New 1.235 - 1.265 mm (0.0486 - 0.0498 inch)
Service Limit 1.285 mm (0.0506 inch)
Second
Standard or New 1.230 - 1.245 mm (0.0484 - 0.0490 inch)
Service Limit 1.265 mm (0.0498 inch)
Oil
Standard or New 2.005 - 2.025 mm (0.0789 - 0.0797 inch)
Service Limit 2.05 mm (0.081 inch)
Piston ring
Ring-to-groove clearance
Top
Standard or New 0.045 - 0.090 mm (0.0018 - 0.0035 inch)
Service Limit 0.135 mm (0.005 inch)
Second
Standard or New 0.040 - 0.070 mm (0.0016 - 0.0028 inch)
Service Limit 0.13 mm (0.005 inch)
Oil
Standard or New 0.20 - 0.70 mm (0.008 - 0.028 inch)
Service Limit 0.80 mm (0.031 inch)