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

Compression Ring (Top) To Ring Groove Clearance 0.04 - 0.08 Millimeter (mm)
Compression Ring (Bottom) To Ring Groove Clearance 0.06 - 0.09 Millimeter (mm)
Piston Rings Ring Width Compression Top 1.47 - 1.49 Millimeter (mm)
Compression (Bottom) 1.46 - 1.49 Millimeter (mm)
Oil Ring Service Limit Side Seal (Snug Fit) Millimeter (mm)
Ring Gap Compression (Top) 0.25 - 0.28 Millimeter (mm)
Ring Gap Compression (Bottom) 0.25 - 0.28 Millimeter (mm)
Ring Gap Oil Ring (Steel Rail) 0.04 - 1.68 Millimeter (mm)