Main Bearing Selection

Crankshaft Bore Code Location 

1. Letters have been stamped on the end of the engine block as a code for the size of each of the five main journal bores. Write down the crank bore codes.

   If you can't read the codes because of accumulated dirt and oil, do not scrub them with a wire brush or scraper. Clean them only with solvent or detergent.

   Fig 1: Identifying Crankshaft Bore Code Location

   Courtesy of AMERICAN HONDA MOTOR CO., INC.

   Main Journal Code Location 

2. The main journal codes are stamped on the crankshaft.
   Fig 2: Identifying Main Journal Code Location

   Courtesy of AMERICAN HONDA MOTOR CO., INC.
3. Use the crank bore codes and the crank journal codes to select the appropriate replacement bearings from the following table.
   NOTE: Color code is on the edge of the bearing.
   Fig 3: Crank Bore Codes Chart

   Courtesy of AMERICAN HONDA MOTOR CO., INC.