Piston Ring

Piston Ring
Piston Ring-To-Ring Groove Clearance
Top 0.020 - 0.065 mm (0.008 - 0.0025 inch)
Second 0.030 - 0.065 mm (0.0012 - 0.0025 inch)
Oil 0.025 - 0.052 mm (0.0010 - 0.0020 inch)
Maximum 0.15 mm (0.0059 inch)
End Gap (measured in cylinder)
Top 0.15 - 0.30 mm (0.0060 - 0.0118 inch)
Second 0.25 - 0.40 mm (0.0099 - 0.0157 inch)
Oil (rail) 0.20 - 0.70 mm (0.0079 - 0.0275 inch)
Maximum 1.0 mm (0.0394 inch)