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
Side Clearance
Top
Standard 0.045 - 0.080 mm (0.0018 - 0.0031 in.)
Limit 0.11 mm (0.0043 in.)
2nd
Standard 0.030 - 0.070 mm (0.0012 - 0.0028 in.)
Limit 0.1 mm (0.004 in.)
Oil Ring 0.065 - 0.135 mm (0.0026 - 0.0053 in.)
End gap
Top
Standard 0.23 - 0.33 mm (0.0091 - 0.0130 in.)
Limit 0.54 mm (0.0213 in.)
2nd
Standard 0.33 - 0.48 mm (0.0130 - 0.0189 in.)
Limit 0.80 (0.0315 in.)
Oil Ring
Standard 0.20 - 0.50 mm (0.0079 - 0.0197 in.)
Limit 0.95 mm (0.0374 in.)