Piston Ring, Engine

Piston Ring End Gap
Top Ring:
Standard 0.20-0.35 mm (0.0079-0.0137 inch)
Maximum Limit 0.7 mm (0.0275 inch)
Lower Ring:
Standard 0.20-0.35 mm (0.0079-0.0137 inch)
Maximum Limit 0.7 mm (0.0275 inch)
Oil Ring:
Standard 0.2-0.7 mm (0.0079-0.0275 inch)
Maximum Limit 1.7 mm (0.0669 inch)

Piston Ring Groove Clearance
Upper Compression Ring 0.03-0.07 mm (0.0012-0.0027 inch)
Lower Compression Ring 0.02-0.06 mm (0.0008-0.0023 inch)