Cylinder Block Distortion

WARNING: This page is about a different variant/trim than selected.

Using a scraper, remove gasket on the cylinder block surface, and also remove oil, scale, carbon, or other contamination.
CAUTION: Be careful not to allow gasket debris to enter the oil or coolant passages.
Measure the distortion on the block upper face at some different points in 6 directions.
Limit : 0.1 mm (0.004 in)

Fig 1: Checking Cylinder Block Distortion
Courtesy of NISSAN MOTOR CO., U.S.A.
If out of the distortion limit, replace the cylinder block.