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 END GAP

First Compression Ring 0.150-0.300 mm (0.0059-0.0118 in)
Second Compression Ring 0.280-0.480 mm (0.0110-0.0189 in)
Oil Control Ring 0.150-0.600 mm (0.0059-0.0236 in)

PISTON RING TO GROOVE CLEARANCE

First Compression Ring 0.030-0.065 mm (0.0012-0.0026 in)
Second Compression Ring 0.015-0.060 mm (0.0006-0.0024 in)
Oil Control Ring 0.030-0.170 mm (0.0012-0.0067 in)

Piston to Bore Clearance 0.026-0.052 mm (0.0010-0.0021 in)