Inner Diameter of Cylinder Bore

Using a bore gauge, measure cylinder bore for wear, out-of-round and taper at 6 different points on each cylinder. (X and Y directions at A, B and C). The Y axis is in the longitudinal direction of the engine.
NOTE: When determining cylinder bore grade, measure cylinder bore at B position.

Cylinder bore inner diameter

Grade No. 1: 89.000 - 89.010 mm (3.5039 - 3.5043 in)

Grade No. 2: 89.010 - 89.020 mm (3.5043 - 3.5047 in)

Grade No. 3: 89.020 - 89.030 mm (3.5047 - 3.5051 in)

Wear limit: 0.2 mm (0.008 in)

Out-of-round (difference between, X - Y): 0.015 mm (0.0006 in)

Taper limit (difference between, C - A): 0.01 mm (0.0004 in)

Fig 1: Measuring Cylinder Bore For Wear, Out-Of-Round And Taper Using Bore Gauge
Courtesy of NISSAN MOTOR CO., U.S.A.
If the measured value rebore exceeds the limit, or if there are scratches and/or seizure on the cylinder inner wall, hone the inner wall.
An oversize piston is provided. When using an oversize piston, rebore the cylinder so that the clearance of the piston cylinder satisfies the standard.
Piston oversize (OS)

Clearance: 0.2 mm (0.008 in)

Diameter: 89.180 - 89.210 mm (3.5110 - 3.5122 in)