Valve Lifter Hole Diameter

Using inside micrometer, measure valve lifter guide bore diameter of cylinder head.
Standard: 34.000 - 34.021 mm (1.3386 - 1.3394 in)
If out of the specified range, replace the cylinder head assembly.

Fig 1: Measuring Valve Lifter Guide Bore Diameter Of Cylinder Head Using Inside Micrometer

Courtesy of NISSAN MOTOR CO., U.S.A.