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: Specifications

Piston Ring Groove Clearance
No.1 0.030-0.080 mm (0.0012-0.0031 in.)
No.2 0.020-0.060 mm (0.0008-0.0024 in.)

Piston End Ring Gap (STD.)
No.1 0.300-0.500 mm (0.0118-0.0197 in.)
No.2 0.400-0.600 mm (0.0157-0.0236 in.)
Oil 0.150-0.500 mm (0.0059-0.0197 in.)

Piston End Ring Gap (Max.)
No.1 1.10 mm (0.0433 in.)
No.2 1.20 mm (0.0472 in.)
Oil 1.10 mm (0.043 in.)