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Connecting Rod Bearing Replacement: Replacement

  1. Cylinder Head - Remove
  2. Oil Pump - Remove 
  3. Connecting Rod Cap and Bearing Half - Remove
    GHH81190Courtesy of HONDA, U.S.A., INC.

    NOTE:  Keep all connecting rod caps and connecting rod bearings in order.

  4. Connecting Rod Bearing Clearance - Inspect
    GHH81191Courtesy of HONDA, U.S.A., INC.
    		 1. Clean the connecting rod journal and the connecting rod bearing half with a clean shop towel

    2. Place one strip of plastigage across the rod journal

    3. Line up the mark (A) on the connecting rod and the connecting rod cap (B), then reinstall the connecting rod bearing half (C), the connecting rod cap, and the connecting rod bolts (D) finger-tight.

    NOTE: 

    • Apply new engine oil to the bolt threads and flanges.
    • Do not rotate the crankshaft during inspection.

    4. Torque the connecting rod bolts to 10 N.m (1.0 kgf.m, 7 lbf.ft).
    GHH81192Courtesy of HONDA, U.S.A., INC.
    		 5. Tighten the connecting rod bolts an additional 90°.

    6. Remove the connecting rod cap and the connecting rod bearing half, and measure the widest part of the plastigage.

    Connecting Rod Bearing-to-Journal Oil Clearance 

    Standard (New):  0.020-0.038 mm (0.00079 -0.00150 in)
    Service Limit:  0.038 mm (0.00150 in) 
    GHH81193Courtesy of HONDA, U.S.A., INC.

    7. If the plastigage measures too wide or too narrow, remove the upper half of the connecting rod bearing. Install a new, complete connecting rod bearing with the same color code, and recheck the clearance. Do not file, shim, or scrape the connecting rod bearings or the connecting rod caps to adjust clearance.

    8. If the plastigage shows the clearance is still incorrect, try the next larger or smaller connecting rod bearing (the color listed above or below that one), and check the clearance again. If the proper clearance cannot be obtained by using the appropriate larger or smaller connecting rod bearing, replace the crankshaft  and start over.

  5. Connecting Rod Bearing - Select
    Connecting Rod Big End Bore Code Locations 
    GHH81194GHH81195GHH81196Courtesy of HONDA, U.S.A., INC.HONDA, U.S.A., INC.HONDA, U.S.A., INC.

    Connecting Rod Journal Code Locations (Letters or Bars) 

    GHH81194GHH81195GHH81196Courtesy of HONDA, U.S.A., INC.HONDA, U.S.A., INC.HONDA, U.S.A., INC.

    Bearing Identification 

    GHH81194GHH81195GHH81196Courtesy of HONDA, U.S.A., INC.HONDA, U.S.A., INC.HONDA, U.S.A., INC.
    		 1. Inspect each connecting rod for cracks and heat damage

    2. Numbers have been stamped on the side of each connecting rod as a code for the size of the big end. Use them, and the letters stamped on the crank (codes for rod journal size), to choose the correct connecting rod bearings.

    NOTE: 

    • If the codes are indecipherable because of an accumulation of dirt and dust, do not scrub them with a wire brush or scraper. Clean them only with solvent or detergent.
    • Each connecting rod falls into one of four tolerance ranges (from 0 to 0.024 mm (0.00095 in), in 0.006 mm (0.00024 in) increments) depending on the size of its big end bore. It's then stamped with a number (1, 2, 3, or 4) indicating the range. You may find any combination of 1, 2, 3, or 4 in any engine.
    Big End Bore Size:  43.0 mm (1.693 in) 

    3. Use the big end bore codes and the connecting rod journal codes to select appropriate replacement connecting rod bearings from the following table.

    NOTE: 

    • 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.
  6. Connecting Rod Bolt - Inspect
    GHH81197Courtesy of HONDA, U.S.A., INC.
    		 1. Measure the diameter of each connecting rod bolt at point A and point B

    2. Calculate the difference in diameter between point A and point B.
    Point A - Point B = Difference in Diameter 
    Difference in Diameter 
    Specification:  0-0.1 mm (0-0.004 in)
  7. Connecting Rod Cap/Bearing Half - Install
    GHH81198Courtesy of HONDA, U.S.A., INC.
    		 1. Apply new engine oil to the threads of the connecting rod bolts

    2. Seat the rod journals into connecting rod No. 1 and connecting rod No. 4. Line up the mark (A) on the connecting rod and the bearing cap

    3. Install the bearing caps and the bolts finger-tight

    4. Rotate the crankshaft clockwise, and seat the journals into connecting rod No. 2 and connecting rod No. 3. Line up the mark on the connecting rod and the bearing cap

    5. Install the bearing caps and the bolts finger-tight

    6. Torque the connecting rod bolts to 10 N.m (1.0 kgf.m, 7 lbf.ft).
    GHH81199Courtesy of HONDA, U.S.A., INC.
    		 7. Tighten the connecting rod bolts an additional 90°.
  8. All Removed Parts - Install
      1. Install the parts in the reverse order of removal.
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