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 Gap and Groove Clearances

Piston Ring Ring Groove Width No.1 1.21 - 1.23
No.2 1.51 - 1.53
Oil 2.81 - 2.83
Side Clearance No.1, No.2 Specification 0.02 - 0.06
Limit 0.1
End Gap No.1 Specification 0.25 - 0.35
Limit 0.8
No.2 Specification 0.40 - 0.55
Limit 0.8
Oil Ring Side Rail Specification 0.10 - 0.40
Limit 1.0