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Cylinder Bore Diameter Measurement Procedure

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora and 2001 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
  1. Measure the cylinder bore diameter at 41 mm (1.61 in) below the cylinder block deck surface.
  2. Compare your results with the engine mechanical specifications. If the cylinder diameter exceeds the specifications, the cylinder block must be replaced. There are no oversized pistons available for service.
    Fig 1: Measuring Cylinder Bore
    G01815840Courtesy of GENERAL MOTORS CORP.
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