Piston Ring, Engine

End Gap of piston rings

Groove 1 0.030 - 0.055 mm (0.0012 - 0.0022 in)
Wear Limit 1.0 mm (0.039 in)

Groove 2 0.030 - 0.055 mm (0.0012 - 0.0022 in)
Wear Limit 0.8 mm (0.031 in)

Groove 3 0.025 - 0.050 mm (0.0010 - 0.0020 in)
Wear Limit 0.8 mm (0.031 in)

Vertical clearance of piston rings

Groove 1 0.050 - 0.085 mm (0.0020 - 0.0033 in)
Wear Limit 0.15 mm (0.0059 in)

Groove 2 0.010 - 0.030 mm (0.0004 - 0.0012 in)
Wear Limit 0.10 mm (0.0039 in)

Groove 3 0.010 - 0.045 mm (0.0004 - 0.0177 in)
Wear Limit 0.10 mm (0.0039 in)