Camshaft Journal Clearance

WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.

Outer Diameter of Camshaft Journal

Measure outer diameter of camshaft journal as shown, below.

Courtesy of NISSAN NORTH AMERICA, INC.

Standard outer diameter No. 1	: 25.935 - 25.955 mm (1.0211 - 1.0218 in)
Standard outer diameter No. 2, 3, 4	: 23.445 - 23.465 mm (0.9230 - 0.9238 in)

Inner Diameter of Camshaft Bracket

Tighten camshaft bracket bolt with specified torque.

Using inside micrometer, measure inner diameter (A) of camshaft bracket.

Courtesy of NISSAN NORTH AMERICA, INC.

Standard inner diameter No. 1	: 26.000 - 26.021 mm (1.0236 - 1.0244 in)
Standard inner diameter No. 2, 3, 4	: 23.500 - 23.521 mm (0.9252 - 0.9260 in)

Calculation of Camshaft Journal Clearance

(Journal clearance) = (inner diameter of camshaft bracket) - (outer diameter of camshaft journal)

Standard No. 1	: 0.045 - 0.086 mm (0.0018 - 0.0034 in)
Standard No. 2, 3, 4	: 0.035 - 0.076 mm (0.0014 - 0.0030 in)
Limit	: 0.15 mm (0.0059 in)

When out of the specified range, replace either or both camshaft and cylinder head.
NOTE: Inner diameter of camshaft bracket is manufactured together with cylinder head. Replace the whole cylinder head assembly.

Camshaft End Play

Install the camshaft in the cylinder head.

Install dial gauge in thrust direction on front end of camshaft. Measure end play when camshaft is moved forward/backward (in direction to axis) as shown, below.

Courtesy of NISSAN NORTH AMERICA, INC.

Standard	: 0.115 - 0.188 mm (0.0045 - 0.0074 in)
Limit	: 0.24 mm (0.0094 in)

If out of the specified range, replace with new camshaft and measure again.
If out of the specified range again, replace with new cylinder head.