Piston Ring, Engine

Piston Ring End Gap
No. 1
Standard 0.25 to 0.35 mm (0.0098 to 0.0138 inch)
Maximum 0.91 mm (0.0358 inch)
No. 2
Standard 0.35 to 0.50 mm (0.0138 to 0.0197 inch)
Maximum 1.06 mm (0.0417 inch)
Oil
Standard 0.10 to 0.35 mm (0.0039 to 0.0138 inch)
Maximum 0.82 mm (0.0323 inch)

Ring Groove Clearance (Standard)
No. 1 0.02 to 0.04 mm (0.0008 to 0.0016 inch)
No. 2 0.01 to 0.03 mm (0.0004 to 0.0012 inch)
Oil 0.01 to 0.03 mm (0.0004 to 0.0012 inch)