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Connecting Rod Bearing Selection

Inspect each connecting rod for cracks and heat damage.

Connecting Rod Big End Bore Code Locations

Each rod has a tolerance range from 0 to 0.024 mm (0.0009 in.), and in 0.006 mm (0.0002 in.) increments, depending on the size of its big end bore. It's then stamped with a number or bar (1, 2, 3, or 4/I, II, III, or IIII) indicating the range. You may find any combination of numbers and bars in any engine. (Half the number or bar is stamped on the bearing cap, the other half is on the rod.)
If you can't read the code because of an accumulation of oil and varnish, do not scrub them with a wire brush or scraper. Clean them only with solvent or detergent.

Normal Bore Size: 51.0 mm (2.01 in.)

Fig 1: Identifying Connecting Rod Big End Bore Size
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Connecting Rod Journal Code Location

The connecting rod journal codes are stamped on the crankshaft in either location.

Fig 2: Identifying Connecting Rod Journal Code Location
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 3: Identifying Connecting Rod Journal Code ('07-08 Models)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 4: Identifying Connecting Rod Journal Code ('09-10 Models)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Use the big end bore codes and rod journal codes to select appropriate replacement bearings from the following table.
NOTE:
- The color code is on the edge of the bearing.
- When using bearing halves of different colors, it does not matter which color is used in the top or bottom.
  
  Fig 5: Identifying Big End Bore Codes & Rod Journal Codes Table
  Courtesy of AMERICAN HONDA MOTOR CO., INC.