Piston Ring, Engine

Piston ring end gap
Standard No. 1 0.25 to 0.35 mm (0.0098 to 0.0138 in.)
No. 2 0.50 to 0.60 mm (0.0197 to 0.0236 in.)
Oil (Side rail) 0.10 to 0.40 mm (0.0039 to 0.0157 in.)
Maximum No. 1 0.50 mm (0.0197 in.)
No. 2 0.85 mm (0.0335 in.)
Oil (Side rail) 0.60 mm (0.0236 in.)