Piston Ring: Specifications

Piston ring
Side clearance
No. 1 ring
Specification 0.03 - 0.07 mm (0.0012-0.0028 in)
Limit 0.1 mm (0.004 in)
No. 2 ring
Specification 0.03 - 0.07 mm (0.0012-0.0028 in)
Limit 0.1 mm (0.004 in)
Oil ring
Specification 0.06 - 0.15 mm (0.0024 - 0.0059 in)
Limit 0.2 mm (0.008 in)
End gap
No. 1 ring
Specification 0.15 - 0.30 mm (0.0059 - 0.0118 in)
Limit 0.6 mm (0.0236 in)
No. 2 ring
Specification 0.30 - 0.45 mm (0.0118 - 0.0177 in)
Limit 0.7 mm (0.0275 in)
Oil ring
Specification 0.20 - 0.70 mm (0.0078 - 0.0275 in)
Limit 0.8 mm (0.0315 in)