Piston Ring, Engine

END GAP:
Top Compression Ring 0.23 - 0.52 mm (0.009 - 0.020 inch)
2nd Compression Ring 0.49 - 0.78 mm (0.019 - 0.031 inch)
Oil Control Steel Rails 0.23 - 0.66 mm (0.009 - 0.026 inch)

SIDE GROOVE CLEARANCE:
Compression Rings 0.025 - 0.065 mm (0.0010 - 0.0026 inch)
Oil Ring Pack 0.004 - 0.178 mm (0.0002 - 0.0070 inch)

RING WIDTH:
Compression Rings 1.17 - 1.19 mm (0.046 - 0.047 inch)
Oil Ring Pack 2.854 - 3.008 mm (0.1124 - 0.1184 inch)