Cylinder Bore Inspection, Cylinder Boring, and Honing. Cadillac Concours 1997

For 1990-2009 cars

1. Clean all gasket surfaces, the oil passages, the coolant passages and the engine block with solvent.
2. Inspect the cylinder block for cracks in the cylinder walls, the coolant jackets and the crankshaft bearing webs.
3. If cracks are found, the cylinder block must be replaced.
4. Measure the cylinder bore diameter for wear at 20 mm (0.7874 in), 50 mm (1.9685 in), and 60 mm (2.3622 in) below the deck face.
5. Measure the cylinder bores for out-of-round.
6. Measure the cylinder bores for taper.
7. Compare the results with the engine mechanical specifications. Refer to Engine Mechanical Specifications .
8. If the cylinders exceed these specifications, replace the cylinder block. There are no oversized pistons and rings available for service.