Piston Ring, Engine

PISTON RINGS
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