Piston Ring, Engine

Piston ring end gap - compression (top)e 0.130-0.280 mm (0.005-0.011 inch)
Piston ring end gap - compression (bottom)e 0.300-0.550 mm (0.0018-0.0022 inch)
Piston ring end gap - oil ring (steel rail) 0.150-0.650 mm (0.006-0.0256 inch)
Piston ring groove width - compression (top) 1.530-1.550 mm (0.06-0.061 inch)
Piston ring groove width - compression (bottom) 1.520-1.540 mm (0.06-0.061 inch)
Piston ring groove width - oil ring 3.030-3.050 mm (0.12-0.12 inch)
Piston ring width - compression (top) 1.480-1.500 mm (0.058-0.059 inch)
Piston ring width - compression (bottom) 1.470-1.490 mm (0.0587-0.0586 inch)
Piston ring-to-groove clearance - compression (top) 0.050-0.090 mm (0.002-0.004 inch)
Piston ring-to-groove clearance - compression (bottom) 0.030-0.080 mm (0.00118-0.00315 inch)
Piston ring-to-groove clearance - oil ring Snug fit