Piston Ring, Engine

Piston ring to ring groove clearance
No.1
Standard value 0.03 - 0.07 mm (0.0012 - 0.0027 inch)
Limit 0.1 mm (0.003 inch)
No.2
Standard value 0.02 - 0.06 mm (0.008 - 0.0023 inch)
Limit 0.1 mm (0.003 inch)
Piston ring end gap
No.1
Standard value 0.30 - 0.45 mm (0.012 - 0.017 inch)
Limit 0.8 mm (0.03 inch)
No.2
Standard value 0.45 - 0.60 mm (0.018 - 0.023 inch)
Limit 0.8 mm (0.03 inch)
Oil ring side
Standard value 0.20 - 0.60 mm (0.008 - 0.023 inch)
Limit 1.0 mm (0.03 inch)