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
Compression
Groove Clearance, Top 0.030 - 0.070 mm (0.0012 - 0.0027 in)
Groove Clearance, Second 0.040 - 0.095 mm (0.0016 - 0.0037 in)
Gap, Top 0.25 - 0.50 mm (0.0098 - 0.0197 in)
Gap, Second 0.25 - 0.50 mm (0.0098 - 0.0197 in)

Oil
Groove Clearance 0.199 mm (0.0008 in) Maximum
Gap 0.51 - 1.40 mm (0.02 - 0.055 in)