Piston Ring, Engine

PISTON RINGS
DESCRIPTION SPECIFICATION
Metric Standard
Clearance in Groove Top
Compression Ring 0.078-0.137 mm (0.003-0.005 inch)
Second Compression Ring 0.070-0.110 mm (0.002-0.004 inch)
Oil Control (Steel Rails) 0.40-0.080 mm (0.001 - 0.003 inch)
Fitted Gap
Top Compression Ring 0.030-0.45 mm (0.011-0.017 inch)
Second Compression Ring 0.030-0.050 mm (0.0011-0.0019 inch)
Oil Ring (Steel Ring) 0.025-0.50 mm (0.0009-0.0019 inch)