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 ring
Piston ring groove clearance
3MZ-FE
No. 1 0.02 to 0.07 mm (0.0008 to 0.0028 inch)
No. 2 0.02 to 0.06 mm (0.0008 to 0.0024 inch)
Oil 0.03 to 0.11 mm (0.0012 to 0.0043 inch)
Specified end gap
3MZ-FE
No. 1 0.30 to 0.95 mm (0.0118 to 0.0374 inch)
No. 2 0.50 to 1.05 mm (0.0197 to 0.0413 inch)
Oil 0.15 to 1.00 mm (0.0059 to 0.0394 inch)