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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 1495 (Engine Mechanical) >> Cylinder Block >> Inspection After Disassembly >> Oil Clearance Of Main Bearing >> Method by Calculation

Method by Calculation

WARNING: This page is about a different car, the 2005 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the main bearings to the cylinder block and bearing cap. Refer to ASSEMBLY .
  2. Calculate the main bearing clearance. (Oil clearance) = (Inner diameter of main bearing) - (Outer diameter of crankshaft journal)
    • Standard: 0.035 - 0.045 mm (0.0014 - 0.0018 in) 
    • Limit: 0.065 mm (0.0026 in) 
  3. If the calculated clearance exceeds the specified limit, replace the bearings. Refer to HOW TO SELECT MAIN BEARINGS .
    Fig 1: Measuring Main Bearings Inner Diameter
    G02475186Courtesy of NISSAN MOTOR CO., U.S.A.
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