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 & Groove Clearance

Ring End Gap Top Ring STD 0.0079-0.0137 Inch (in)
MAX 0.0276 Inch (in)
Lower Ring STD 0.0138-0.0196 Inch (in)
MAX 0.0276 Inch (in)
Oil Ring STD 0.0079-0.0275 Inch (in)
MAX 0.0709 Inch (in)
Ring Groove Clearance Lower Ring 0.0008-0.0023 Inch (in)
Upper Ring 0.0012-0.0027 Inch (in)