Engine Block Cleaning and Inspection. Chevrolet Joy 2008

For 1990-2009 cars

1. Measure 6 different places using thickness gage and straight scale in the same method as for the cylinder head (1).

Important: Pay attention to the flatness on the surface between combustion chambers.

2. Polish and repair it, if the distortion, bent or twist exceeds the limit. If polishing needs more than 0.15 mm (0.0059 in), replace it with a new one.

Specifications

• | The limit of the cylinder distortion is 0.05 mm (0.0020 in)

• | The standard flatness is 0.03 mm (0.0012 in)

Notice: The damage of the cylinder head surface may cause the loss of power due to the leakage of the compression.

3. Measure the flatness of the cylinder head surface in the location of each 4 side and diagonal.