Piston Ring, Engine

Piston Ring
Side Clearance
No. 1 0.03 - 0.07 mm (0.0012 - 0.0027 inch)
Limit 0.1 mm (0.004 inch)
No. 2 0.03 - 0.07 mm (0.0012 - 0.0027 inch)
Limit 0.1 mm (0.004 inch)
Oil ring 0.06 - 0.15 mm (0.0024 - 0.0059 inch)
Limit 0.2 mm (0.008 inch)

End gap
No. 1 0.15 - 0.30 mm (0.0059 - 0.0118 inch)
Limit 0.6 mm (0.0236 inch)
No. 2 0.30 - 0.45 mm (0.0118 - 0.0177 inch)
Limit 0.7 mm (0.0275 inch)
Oil ring side rail 0.20 - 0.70 mm (0.0078 - 0.0275 inch)
Limit 0.8 mm (0.0315 inch)

Service oversize 0.25, 0.50 mm (0.010, 0.020 inch) oversize