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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 2015 (Engine Mechanical) >> Cylinder Block >> Inspection After Disassembly >> Piston To Cylinder Bore Clearance >> Re-boring Cylinder Bore

Re-boring Cylinder Bore

WARNING: This page is about a different car, the 2007 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
  1. Cylinder bore size is determined by adding piston to cylinder bore clearance to piston skirt diameter.

    Re-bored size calculation: D = A + B - C where, 

    D: Bored diameter 

    A: Piston skirt diameter as measured 

    B: Piston to cylinder bore clearance (standard value) 

    C: Honing allowance 0.02 mm (0.0008 in) 

  2. Install lower cylinder block, and tighten to the specified torque. Otherwise, cylinder bores may be distorted in final assembly.
  3. Cut cylinder bores.
    NOTE:
    • When any cylinder needs boring, all other cylinders must also be bored.
    • Do not cut too much out of cylinder bore at a time. Cut only 0.05 mm (0.0020 in) or so in diameter at a time.
  4. Hone cylinders to obtain the specified piston to cylinder bore clearance.
  5. Measure finished the cylinder bore for out-of-round and taper.
    NOTE: Measurement should be done after cylinder bore cools down.
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