Chevrolet Workshop Service and Repair Manuals

Piston Ring: Specifications

Piston Rings

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

Production .............................................................................................................................................................  0.31 - 0.52 mm (0.012 - 0.02 inch)
Service .................................................................................................................................................................  0.31 - 0.59 mm (0.0122 0.023 inch)

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

Production ...............................................................................................................................................................  0.51 - 0.77 mm (0.02 - 0.03 inch)
Service .....................................................................................................................................................................  0.51 - 0.84 mm (0.02 0.033 inch)

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

Production .........................................................................................................................................................  0.31 - 0.87 mm (0.0122 - 0.034 inch)
Service ...............................................................................................................................................................  0.31 - 0.94 mm (0.0122 - 0.037 inch)

Piston Ring to Groove Clearance - Oil Control Ring

Production ...................................................................................................................................................  0.015 - 0.199 mm (0.0006 - 0.0078 inch)
Service .........................................................................................................................................................  0.015 - 0.199 mm (0.0006 - 0.0078 inch)