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Cylinder Block

WARNING: This page is about a different car, the 1996 Lexus SC 400 and 1995 Lexus SC 400. 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  under ENGINE SPECIFICATION.
  2. Measure cylinder bore diameter at .39" (10 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 . 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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