Piston Ring, Engine

Piston Ring
Piston ring groove clearance
No.1 0.03 to 0.07 mm (0.0012 to 0.0028 in.)
No.2 0.02 to 0.06 mm (0.0008 to 0.0024 in.)
Piston ring end gap
Standard No.1 0.25 to 0.35 mm (0.0098 to 0.0138 in.)
No.2 0.35 to 0.50 mm (0.0138 to 0.0197 in.)
Oil (Side rail) 0.10 to 0.35 mm (0.0039 to 0.0138 in.)
Maximum No.1 0.91 mm (0.0358 in.)
No.2 1.60 mm (0.0417 in.)
Oil (Side rail) 0.82 mm (0.0323 in.)