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Home >> Chevrolet >> 2023 >> Camaro ZL1, 2D Convertible, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 13 (Engine Mechanical - 3.6L - Repair Instructions) >> Repair Instructions >> Engine Block Overhaul >> Measuring Cylinder Bore Out-of-Round

Measuring Cylinder Bore Out-of-Round

WARNING: This page is about a different variant/trim than selected.
  1. Measure both the thrust and non-thrust cylinder diameter at 10 mm (0.397 in) below the deck. Record your measurements.
  2. Calculate the difference between the 2 measurements. The result will indicate out-of-round at the upper end of the cylinder.
  3. Measure both the thrust and non-thrust cylinder diameter at 100 mm (3.976 in) below the deck surface. Record your measurements.
  4. Calculate the difference between the 2 measurements. The result will indicate out-of-round at the lower end of the cylinder.
  5. Compare your results with the Engine Mechanical Specifications . If the cylinders exceed these specifications, the engine block may be oversized to 0.25 mm (0.010 in). There is only one size of oversized pistons and rings available for service.
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