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Method A

WARNING: This page is about a different car, the 2003 Pontiac Aztek and 2003 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

Important:  Do not mix inserts of different nominal size in the same bearing bore.

  1. Measure the crankshaft bearing journal diameter with a micrometer in several places, 90 degrees apart. Average the measurements.
  2. Measure the crankshaft bearing journal taper and runout.
  3. Install the crankshaft bearing inserts. Tighten the bearing cap bolts to specification using J36660-A. 
  4. Measure the connecting rod inside diameter in the same direction as the length of the rod with an inside micrometer.
  5. Measure the crankshaft main bearing inside diameter with an  inside micrometer.
  6. Select a set of bearing inserts that will produce the desired clearance.
  7. If the specified clearances cannot be met, the crankshaft journals must be reconditioned and undersized bearing inserts installed.
    Fig 1: Measuring Bearing Clearance Using Gaging Plastic
    G01500713Courtesy of GENERAL MOTORS CORP.