Cylinder Block Distortion And Wear

WARNING: This page is about a different car, the 2004 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.

Clean upper surface of cylinder block.
Use a reliable straightedge and feeler gauge to check the flatness of cylinder block surface. Check along six positions shown in figure.
1. Block surface flatness
  1. Standard : Less than 0.03 mm (0.0012 in)
  2. Limit : 0.1 mm (0.004 in)
- If out of specification, resurface it.
  
  Fig 1: Checking Flatness Of Cylinder Block Surface
  Courtesy of NISSAN MOTOR CO., U.S.A.
- The limit for cylinder block resurfacing is determined by the amount of cylinder head resurfacing.
  Amount of cylinder head resurfacing is "A".
  
  Amount of cylinder block resurfacing is "B".
  
  Fig 2: Identifying Cylinder Block Height From Crankshaft Center
  Courtesy of NISSAN MOTOR CO., U.S.A.
  1. The maximum limit is as follows A + B : 0.2 mm (0.008 in)
  2. Nominal cylinder block height from crankshaft center 213.95 - 214.05 mm (8.4232 - 8.4271 in)
- If necessary, replace cylinder block.