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

DIMENSIONS
Ring Side Clearance (Second Ring Only)
0.010 Inch Oversize -
0.020 Inch Oversize 0.05-0.10 mm (0.002-0.004 inch)
0.030 Inch Oversize 0.05-0.10 mm (0.002-0.004 inch)
Ring Gap
Top Compression Ring
0.010 Inch Oversize 0.35-0.61 mm (0.014-0.024 inch)
0.020 Inch Oversize 0.35-0.61 mm (0.014-0.024 inch)
0.030 Inch Oversize 0.35-0.61 mm (0.014-0.024 inch)
Second Compression Ring
0.010 Inch Oversize 1.57-1.83 mm (0.062-0.072 inch)
0.020 Inch Oversize 1.57-1.83 mm (0.062-0.072 inch)
0.030 Inch Oversize 1.57-1.83 mm (0.062-0.072 inch)
Oil Ring
0.010 Inch Oversize 0.30-0.61 mm (0.012-0.024 inch)
0.020 Inch Oversize 0.30-0.61 mm (0.012-0.024 inch)
0.030 Inch Oversize 0.30-0.61 mm (0.012-0.024 inch)