Piston Ring: Specifications

Piston Ring To Ring Groove Clearance
Number 1
Standard Value 0.03 - 0.07 mm (0.0012 - 0.0027 in)
Limit 0.1 mm (0.003 in)
Number 2
Standard Value 0.02 - 0.06 mm (0.0008 - 0.0023 in)
Limit 0.1 mm (0.003 in)

Piston Ring End Gap
Number 1
Standard Value 0.25- 0.40 mm (0.010 - 0.016 in)
Limit 0.8 mm (0.03 in)
Number 2
Standard Value 0.35 - 0.50 mm (0.014 - 0.019 in)
Limit 0.8 mm (0.03 in)

Oil ring side rail
Standard Value 0.10 - 0.35 mm (0.003 - 0.014 in)
Limit 1.0 mm (0.03 in)