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Home >> Nissan-Datsun >> 2008 >> Sentra SL >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine Mechanical (Qr25DE)) >> Cylinder Block >> How to Select Piston and Bearing >> How To Select A Main Bearing >> When New Cylinder Block and Crankshaft are Used

When New Cylinder Block and Crankshaft are Used

WARNING: This page is about a different variant/trim than selected.
  1. "Main Bearing Selection Table" rows correspond to bearing housing grade on rear left side of cylinder block.
    • If there is a corrected stamp mark on the cylinder block, use it as a correct reference.
      Fig 1: Checking Cylinder Bore Grade On Rear Left Side Of Cylinder Block
      G04885885Courtesy of NISSAN MOTOR CO., U.S.A.
  2. Apply journal diameter grade stamped on crankshaft front side to column in "Main Bearing Selection Table".
    Fig 2: Identifying Connecting Rod Bearing Grade
    G04924918Courtesy of NISSAN MOTOR CO., U.S.A.
  3. Find value at crossing of row and column in "Main Bearing Selection Table".
    CAUTION:
    • There are two main bearing selection tables. One is for odd-numbered journals (1, 3, and 5) and the other is for even-numbered journals (2 and 4). Make certain to use the appropriate table. This is due to differences in the specified clearances.
  4. Apply the symbol obtained to "Main Bearing Grade Table" to select.
    NOTE:
    • Service parts are available as a set of both upper and lower.
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