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Cylinder Block

  1. Inspect cylinder block deck surface for warpage. Replace cylinder block if deck warpage exceeds specification. See CYLINDER BLOCK  table under ENGINE SPECIFICATIONS.
  2. Different cylinder bore sizes are used. Cylinder bore diameter is determined by size mark ("0", "1", "2", "3" or "4") stamped on cylinder block. See Figure. Measure cylinder bore diameter at following places: .39" (9.9 mm) from top and bottom cylinder bore and at middle of cylinder bore.
  3. Ensure cylinder bore diameter is within specification. See CYLINDER BLOCK  table under ENGINE SPECIFICATIONS. Bore cylinder block if cylinder bore diameter exceeds 3.2772" (83.240 mm). Cylinder block can be bored for .020" (.50 mm) oversize pistons.
    NOTE: Main bearing bore inside diameter is determined by main bearing bore size mark ("1", "2" or "3") stamped on cylinder block oil pan rail. See Figure.
  4. With main bearing caps installed and bolts tightened to specification, ensure main bearing bore inside diameter is within specification. See CYLINDER BLOCK  table.
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