Piston Ring, Engine

Piston Ring Groove Clearance
No. 1 0.030 to 0.080 mm (0.0012 to 0.0031 inch)
No. 2 0.020 to 0.060 mm (0.0008 to 0.0024 inch)
Ring End Gap
No. 1
Standard 0.300 to 0.400 mm (0.0118 to 0.0158 inch)
Maximum 1.10 mm (0.0433 inch)
No. 2
Standard 0.400 to 0.550 mm (0.0158 to 0.0217 inch)
Maximum 1.30 mm (0.0512 inch)
Oil (Side Rail)
Standard 0.130 to 0.380 mm (0.0051 to 0.0150 inch)
Maximum 0.90 mm (0.0354 inch)