Piston To Cylinder Bore Clearance

Cylinder Bore Inner Diameter 

• Measure cylinder bore for wear, out-of-round and taper at six different points on each cylinder using suitable tool. [(A) and (B) directions at (C), (D), and (E)] [(A) is in longitudinal direction of engine]

  (f)	: 10 mm (0.39 in)
  (g)	: 75 mm (2.95 in)
  (h)	: 140 mm (5.51 in)

  Courtesy of NISSAN NORTH AMERICA, INC.

  NOTE: When determining cylinder bore grade, measure the cylinder bore at (B) position.

  Standard:

  Cylinder bore inner diameter

  : Refer to CYLINDER BLOCK : Service Data .

  Limit:

  Out-of-round [Difference between (A) and (B)]

  Taper [Difference between (C) and (D)]

  : Refer to CYLINDER BLOCK : Service Data .

• If measured value exceeds limit or if there are scratches and/or seizure on the cylinder inner wall hone or re-bore the cylinder inner wall.

Piston Skirt Diameter 

• Measure outer diameter of piston skirt with suitable tool (A).

  Courtesy of NISSAN NORTH AMERICA, INC.

  Standard

  : Refer to CYLINDER BLOCK : Service Data .

Piston to Cylinder Bore Clearance 

• (Piston to cylinder bore clearance) = (Cylinder bore inner diameter) - (Piston skirt diameter)

  Standard and Limit

  : Refer to CYLINDER BLOCK : Service Data .

• If measured value exceeds limit replace piston and piston pin assembly..