Chevrolet Workshop Service and Repair Manuals

Piston Ring: Specifications

PISTON RING GAP & GROOVE CLEARANCE

Piston Ring End Gap
First Compression Ring - Measured In Cylinder Bore
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 - Measured In Cylinder Bore
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 - Measured in Cylinder Bore
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...............................................................................................................................0.4-0.085 mm (0.00157-0.00335 in)
First Compression Ring - Service....................................................................................................................................0.4-0.085 mm (0.00157-0.00335 in)
Second Compression Ring -Production.............................................................................................................................0.4-0.078 mm (0.00157-0.0031 in)
Second Compression Ring - Service..................................................................................................................................0.4-0.078 mm (0.00157-0.0031 in)
Oil Control Ring - Production..............................................................................................................................................0.012-0.2 mm (0.0005-0.0078 in)
Oil Control Ring - Service...................................................................................................................................................0.012-0.2 mm (0.0005-0.0078 in)