Piston Ring, Engine

PISTON RING END GAP

Measured in Cylinder Bore
First Compression Ring
Production 0.23-0.44 mm (0.009-0.017 in)
Service 0.23-0.5 mm (0.009-0.0196 in)

Second Compression Ring
Production 0.44-0.7 mm (0.017-0.027 in)
Service 0.44-0.76 mm (0.0173-0.03 in)

Oil Control Ring
Production 0.18-0.75 mm (0.007-0.029 in)
Service 0.18-0.81 mm (0.007-0.032 in)

PISTON RING TO GROOVE CLEARANCE

First Compression Ring
Production 0.04-0.085 mm (0.00157-0.00335 in)
Service 0.04-0.085 mm (0.00157-0.00335 in)

Second Compression Ring
Production 0.04-0.078 mm (0.00157-0.0031 in)
Service 0.04-0.078 mm (0.00157-0.0031 in)

Oil Control Ring
Production 0.012-0.2 mm (0.0005-0.0078 in)
Service 0.012-0.2 mm (0.0005-0.0078 in)