Camshaft Journal Clearance

Outer Diameter of Camshaft Journal 

• Measure outer diameter of camshaft journal as shown in illustration.

  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 

Courtesy of NISSAN NORTH AMERICA, INC.

1. Tighten camshaft bracket bolt with specified torque.
2. Using inside micrometer, measure inner diameter (A) of camshaft bracket.

   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.