Piston Ring, Engine

COMPRESSION RING
Top Groove Side Clearance 0.05-0.027 mm (0.0019-0.0027 inches)
Second Groove Side Clearance 0.05-0.027 mm (0.0019-0.0027 inches)
Top Ring Gap 0.25-0.50 mm (0.010-0.020 inches)
Second Ring Gap 0.25-0.50 mm (0.010-0.020 inches)

OIL RING
Groove Clearance 0.05-0.021 mm (0.0019-0.0082 inches)
Gap 0.25-0.50 mm (0 010-0.020 inches)