Piston Ring, Engine

Upper Ring:
End Gap 0.30 - 0.55 mm (0.012 - 0.022 inch)
Wear Limit 1.0 mm (0.039 inch)
Side Groove Clearance 0.030 - 0.095 mm (0.001 - 0.003 inch)
Maximum Clearance 0.10 mm (0.004 inch)

Intermediate Ring:
End Gap 0.30 - 0.55 mm (0.012 - 0.022 inch)
Wear Limit 1.0 mm (0.039 inch)
Side Groove Clearance 0.030 - 0.095 mm (0.0010 - 0.0037 inch)
Maximum Clearance 0.10 mm (0.004 inch)

Oil Control Ring:
End Gap 0.25 - 1.00 mm (0.010 - 0.039 inch)
Wear Limit 1.88 mm (0.074 inch)
Side Groove Clearance 0.014 - 0.266 mm (0.0005 - 0.0090 inch)
Maximum Clearance 0.266 mm (0.009 inch)