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Home >> Nissan-Datsun >> 2005 >> Sentra SE-R >> Repair and Diagnosis >> Engine Mechanical >> Engine Mechanical (Qr25DE) >> Cylinder Block >> How To Select A Connecting Rod Bearing >> Notes

How To Select A Connecting Rod Bearing: Notes

When New Connecting Rod and Crankshaft are Used: 

  1. Apply big end inside diameter grade stamped on connecting rod side face to the row in the "Connecting Rod Bearing Selection Chart".
    Fig 1: Identifying Big End/Small End Inside Diameter Grade
    G02454095Courtesy of NISSAN MOTOR CO., U.S.A.
  2. Apply pin diameter grade stamped on crankshaft front side to the column in the "Connecting Rod Bearing Selection Chart".
  3. Read the symbol at the cross point of selected row and column in the "Connecting Rod Bearing Selection Chart".
  4. Apply the symbol obtained to connecting rod bearing grade chart to select.
    Fig 2: Identifying Journal Diameter Grade & Reference Codes
    G02454096Courtesy of NISSAN MOTOR CO., U.S.A.

When Crankshaft and Connecting Rod are Reused: 

  1. Measure dimensions of the big end inner diameter of connecting rod and outer diameter of crankshaft pin individually.
  2. Apply the dimension measured to the "Connecting Rod Bearing Selection Chart" below.