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

Clearance Between Rings And Sides Of Groove:
Piston-Compression Ring 0.040-0.095 mm (0.0016-0.0037 inches)
Piston-Oil Rings 0.0 mm (0.0 inches)
Gap, Between:
Ends-Top Compression Rings 0.25-0.40 mm (0.010-0.016 inches)
Ends-Second Compression Ring 0.35-0.50 mm (0.014-0.020 inches)
Ends-Oil Rings 0.25-0.76 mm (0.010-0.030 inches)
Width of Compression Ring Groove:
Top Ring 1.230-1.255 mm (0.048-0.049 inches)
Second Ring 1.530-1.555 mm (0.060-0.061 inches)
Oil Ring 3.030-3.055 mm (0.119-0.120 inches)

NOTE:
^ Number of Compression Rings: 2
^ Number of Oil Rings: 1