1. Measure wear and taper in direction X and Y at three levels in each cylinder as shown. If measurements in any cylinder are beyond the Oversize Bore Service Limit, replace the block. If the block is to be rebored, refer to Step 7 after reboring.
   Cylinder Bore Size

   K20Z2 Engine:
   Standard (New):
   A or I: | 86.010−86.020 mm (3.3862−3.3866 in.)
   B or II: | 86.000−86.010 mm (3.3858−3.3862 in.)
   Service Limit: | 86.070 mm (3.3886 in.)
   Standard (New):
   A or I: | 87.010−87.020 mm (3.4256−3.4260 in.)
   B or II: | 87.000−87.010 mm (3.4252−3.4256 in.)
   Service Limit: | 87.070 mm (3.4279 in.)

   Oversize
   K20Z2 Engine:
   0.25: | 86.250−86.260 mm (3.3957−3.3961 in.)
   0.25: | 87.250−87.260 mm (3.4350−3.4354 in.)

   Reboring limit: | 0.25 mm (0.01 in.) max.

   Bore Taper
   Limit: | (Difference between first and third measurement) 0.05 mm (0.002 in.)

1. Scored or scratched cylinder bores must be honed.