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)

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Piston: Specifications

Piston Dimensions And Clearances

Diameter 92.975 mm (3.6605 in.).
Weight 366 grams (12.9 oz.).


No.1 Ring Groove Diameter 83.37 - 83.13 mm (3.282 - 3.273 in.).
No.2 Ring Groove Diameter 82.833 - 83.033 mm (3.261 - 3.310 in.).
No.3 Ring Groove Diameter 83.88 - 84.08 mm (3.302 - 3.310 in.).

Clearance in Piston 0.010 - 0.019 mm (0.0004 - 0.0008 in.).