Piston Ring, Engine

PISTON RING GAP & GROOVE CLEARANCE

Piston Ring End Gap
First Compression Ring 0.15-0.30 mm (0.006-0.011 in)
Second Compression Ring 0.25-0.45 mm (0.009-0.017 in)
Oil Control Ring 0.15-0.65 mm (0.06-0.025 in)

Piston Ring to Groove Clearance
First Compression Ring 0.03-0.065 mm (0.001-0.002 in)
Second Compression Ring 0.02-0.055 mm (0.0007-0.002 in)
Oil Control Ring 0.01 mm (0.004 in)