Piston Ring, Engine

Piston ring
Side clearance
Top
Standard 0.045 - 0.080 mm (0.0018 - 0.0031 inch)
Limit 0.11 mm (0.0043 inch)
2nd
Standard 0.030 - 0.070 mm (0.0012 - 0.0028 inch)
Limit 0.1 mm (0.004 inch)
Oil ring
Standard 0.065 - 0.135 mm (0.0026 - 0.0053 inch)
End gap
Top
Standard 0.23 - 0.33 mm (0.0091 - 0.0130 inch)
Limit 0.54 mm (0.0213 inch)
2nd
Standard 0.33 - 0.48 mm (0.0130 - 0.0189 inch)
Limit 0.80 mm (0.0315 inch)
Oil (rail ring)
Standard 0.20 - 0.50 mm (0.0079 - 0.0197 inch)
Limit 0.95 mm (0.0374