Piston Ring, Engine

PISTON RING

Ring Gap:
Top Compression Ring 0.40-0.55 mm (0.015-0.021 in.)
Second Compression Ring 0.24-0.51 mm (0.009-0.020 in.)
Oil Control Rails 0.15-0.66 mm (0.0059-0.0259 in.)

Side Clearance:
Top Compression Ring 0.04-0.09 mm (0.001-0.0035 in.)
Second Compression Ring 0.004-0.08 mm (0.001-0.0031 in.)
Oil Ring Ring 0.06-0.21 mm (0.002-0.008 in.)