Main Bearing Housing Inside Diameter

WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.

Install the main bearing caps with the main bearings removed, and tighten the bolts to the specified torque. Refer to "DISASSEMBLY AND ASSEMBLY ".
Measure inside diameter of main bearing housing.
Standard: 68.944 - 68.968 mm (2.7143 - 2.7153 in)

Fig 1: Measuring Main Bearing Housing Inside Diameter
Courtesy of NISSAN NORTH AMERICA, INC.
If out of the standard, replace cylinder block and main bearing caps as an assembly.
NOTE: These components must be replaced as a single unit, because they were processed together.