Camshaft Journal Clearance

WARNING: This page is about a different car, the 2004 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.

Install the camshaft brackets and tighten the bolts to specified torque.
using inside micrometer, measure inner diameter of camshaft bracket.
1. Standard No. 1 Intake and exhaust :28.000 - 28.021 mm (1.1024 - 1.1032 in)
2. Standard No.2,3,4,5 Intake :23.985 - 24.006 mm (0.9443 - 0.9451 in)
3. Exhaust :24.000-24.021 mm (0.9449-0.9457 in)
Fig 1: Measuring Inner Diameter Of Camshaft Bracket
Courtesy of NISSAN MOTOR CO., U.S.A.
Measure the outer diameter of the camshaft journal.
1. Standard No. 1 :27.935 - 27.955 mm (1.0998 - 1.1006 in)
2. Standard No. 2, 3, 4, 5 :23.935 - 23.955 mm (0.9423 - 0.9431 in)
Fig 2: Measuring Outer Diameter Of Camshaft Journal
Courtesy of NISSAN MOTOR CO., U.S.A.
If the journal clearance exceeds the limit, replace camshaft and/or cylinder head.
- (Camshaft journal clearance) = (inner diameter of camshaft bracket) - (outer diameter of camshaft journal)
1. Camshaft journal clearance
  1. Standard
    1. Intake : 0.030 - 0.071 mm (0.0012 - 0.0028 in)
    2. Exhaust : 0.045 - 0.086 mm (0.0018 - 0.0034 in)
  2. Limit
    1. Intake : 0.135 mm (0.0053 in)
    2. Exhaust : 0.150 mm (0.0059 in)
NOTE: Inner diameter of the camshaft bracket is manufactured together with the cylinder head. If the camshaft bracket is out of specification, replace the entire cylinder head assembly.