Piston Ring, Engine
Piston ringPiston ring-to-ring groove clearance
Top 0.030 - 0.065 mm (0.0012 - 0.0025 inch)
Second 0.030 - 0.070 mm (0.0012 - 0.0027 inch)
oil (rail) 0.07 - 0.16 mm (0.003 - 0.006 inch)
Maximum
Top, Second 0.15 mm (0.006 inch)
Oil 0.20 mm (0.008 inch)
End gap (Measured in cylinder)
Top 0.15 - 0.30 mm (0.006 - 0.011 inch)
Second 0.30 - 0.45 mm (0.012 - 0.017 inch)
Oil (rail) 0.20 - 0.70 mm (0.008 - 0.027 inch)
Maximum 1.0 mm (0.039 inch)