Chevrolet Workshop Service and Repair Manuals

Piston Ring: Specifications

Piston Rings

Piston Ring End Gap - First Compression Ring - Measured in Cylinder Bore

Production ...........................................................................................................................................................  0.23 - 0.44 mm (0.009 - 0.017 inch)
Service .................................................................................................................................................................  0.23 - 0.5 mm (0.009 - 0.0196 inch)

Piston Ring End Gap - Second Compression Ring - Measured in Cylinder Bore

Production .............................................................................................................................................................  0.44 - 0.7 mm (0.017 - 0.027 inch)
Service .................................................................................................................................................................  0.44 - 0.76 mm (0.0173 - 0.03 inch)

Piston Ring End Gap - Oil Control Ring - Measured in Cylinder Bore

Production ...........................................................................................................................................................  0.18 - 0.75 mm (0.007 - 0.029 inch)
Service .................................................................................................................................................................  0.18 - 0.81 mm (0.007 - 0.032 inch)

Piston Ring to Groove Clearance - First Compression Ring

Production ...................................................................................................................................................  0.04 - 0.85 mm (0.00157 - 0.00335 inch)
Service .......................................................................................................................................................  0.04 - 0.085 mm (0.00157 - 0.00335 inch)

Piston Ring to Groove Clearance - Second Compression Ring

Production .......................................................................................................................................................  0.04 - 0.78 mm (0.0157 - 0.0031 inch)
Service ........................................................................................................................................................  0.04 - 0.78 mm (0.00157 - - 0.0031 inch)

Piston Ring to Groove Clearance - Oil Control Ring

Production .......................................................................................................................................................  0.012 - 0.2 mm (0.0005 - 0.0078 inch)
Service .............................................................................................................................................................  0.012 - 0.2 mm (0.0005 - 0.0078 inch)