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 0.040 - 0.080 mm (0.0016 - 0.0031 in.)
Limit 0.1 mm (0.004 in.)
2nd
Standard 0.030 - 0.070 mm (0.0012 - 0.0028 in.)
Limit 0.1 mm (0.004 in.)
Oil 0.065 - 0.135 mm (0.0026 - 0.0053 in.)
Ring Gap
Top
Standard 0.28 - 0.52 mm (0.0110 - 0.0205 in.)
Limit 1.0 mm (0.039 in.)
2nd
Standard 0.45 - 0.69 mm (0.0177 - 0.0272 in.)
Limit 1.0 mm (0.039 in.)
Oil (rail ring)
Standard 0.20 - 0.69 mm (0.0079 - 0.0272 in.)
Limit 1.0 mm (0.039 in.)