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Cylinder Block

WARNING: This page is about a different car, the 2002 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.
  1. Inspect cylinder block deck surface warpage. Replace cylinder block if deck warpage exceeds specification. See CYLINDER BLOCK  table under ENGINE SPECIFICATIONS.
  2. Measure cylinder bore diameter at .39 in. (9.9 mm) from top and bottom of cylinder bore and at middle of cylinder bore. Different cylinder bore sizes are used. Cylinder bore diameter is determined by size mark ("1", "2" or "3") stamped on cylinder block deck surface. See Figure.
  3. Ensure cylinder bore diameter is within specification. See CYLINDER BLOCK  table under ENGINE SPECIFICATIONS. Replace cylinder block if cylinder bore diameter exceeds specification.
NOTE: Main bearing bore inside diameter is determined by main bearing bore size mark stamped on cylinder block. See Figure.
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