Envoy 4WD V8-5.3L (2007)
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 in)
Service ........................................................................................................................................................................ 0.23-0.5 mm (0.009-0.0196 in)
Piston Ring End Gap - 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)
Piston Ring End Gap - 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 ......................................................................................................................................................... 0.04-0.085 mm (0.00157-0.00335 in)
Service .............................................................................................................................................................. 0.04-0.085 mm (0.00157-0.00335 in)
Piston Ring-to-Groove Clearance - 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)
Piston Ring-to-Groove Clearance - 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)