Valve Lifter Clearance

Outer Diameter of Valve Lifter 

• Measure the outer diameter of the valve lifter.

  Valve lifter outer diameter: 33.977 - 33.987 mm (1.3377 - 1.3381 in) 

  Fig 1: Measuring Valve Lifter Outer Diameter

  Courtesy of NISSAN NORTH AMERICA, INC.
• If out of the specified range, replace the valve lifter.

Valve Lifter Bore Inner Diameter 

• Using inside micrometer, measure diameter of valve lifter bore 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 2: Checking Valve Lifter Bore Inner Diameter

  Courtesy of NISSAN NORTH AMERICA, INC.

Calculation of Valve Lifter Clearance 

• (Valve lifter clearance) = (hole diameter for valve lifter) - (outer diameter of valve lifter)

  Standard: 0.013 - 0.044 mm (0.0005 - 0.0017 in) 

• If out of specified range, replace either or both valve lifter and cylinder head assembly.