Piston Ring, Engine

Piston ring
Side clearance
No.1 ring
Specifications 0.04 - 0.085 mm (0.0016 - 0.0033 inch)
Limit 0.1 mm (0.0039 inch)
No.2 ring
Specifications 0.04 - 0.085 mm (0.0016 - 0.0033 inch)
Limit 0.1 mm (0.0039 inch)
Oil ring 0.08 - 0.175 mm (0.0031 - 0.0069 inch)
End gap
No. 1 ring
Specifications 0.15 - 0.30 mm (0.0059 - 0.0118 inch)
Limit 1.0 mm (0.0394 inch)
No. 2 ring
Specifications 0.35 - 0.50 mm (0.0059 - 0.0118 inch)
Limit 1.0 mm (0.394 inch)
Oil ring
Specifications 0.20 - 0.70 mm (0.0079 - 0.0276 inch)
Limit 1.0 mm (0.394 inch)