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



Pistons And Connecting Rods, Disassembling And Assembling

Piston Rings Shift By 120 °

Piston Ring End Gap/Play Specifications Table

Piston Ring End Play

New Wear Limit

- Rectangular Ring mm 0.20 to 0.40 1.0

- Lug-Minute Ring mm 0.20 to 0.40 1.0

- Oil Scrapper Ring mm 0.25 to 0.50 1.0


Piston Ring Side Play Specifications Table

Side Clearance

New Wear Limit

- Rectangular Ring mm 0.04 to 0.09 0.15

- Lug-Minute Ring mm 0.03 to 0.06 0.15

- Oil Scrapper Ring mm 0.02 to 0.06 0.15