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Special Tools Required

  1. Remove all of the old liquid gasket from the lower block mating surfaces, bolt, and bolt holes.
  2. Clean the lower block mating surfaces.
  3. Check the connecting rod bearing clearance with plastigauge (see CONNECTING ROD BEARING REPLACEMENT  ).
  4. Check the main bearing clearance with plastigauge (see CRANKSHAFT MAIN BEARING REPLACEMENT  ).
  5. Install the bearing halves in the engine block and connecting rods.
  6. Apply new engine oil to the main bearings and rod bearings.
  7. Hold the crankshaft so rod journal No. 2 and rod journal No. 3 are straight up, and lower the crankshaft into the engine block.
  8. Install the thrust washers (A) on both edges of the No. 4 main bearing recess.
    Fig 1: Installing Thrust Washers On Both Edges Of No 4 Main Bearing Recess
    G03692456Courtesy of AMERICAN HONDA MOTOR CO., INC.
  9. Apply new engine oil to the threads of the connecting rod bolts.
  10. Seat the rod journals into connecting rod No. 1 and connecting rod No. 4. Install the connecting rod caps and bolts finger-tight. Install the caps so the bearing recess is on the same side as the recess in the rod.
  11. Rotate the crankshaft clockwise, and seat the journals into connecting rod No. 2 and connecting rod No. 3. Install the connecting rod caps and bolts finger-tight.
  12. Tighten the connecting rod bolts in sequence to 25 N.m (2.5 kgf.m, 18 lbf.ft).
  13. Tighten the connecting rod bolts an additional 90 °.
  14. Apply liquid gasket, P/N 08717-0004, 08718-0001, 08718-0003, or 08718-0009, evenly to the engine block mating surface of the lower block.
    NOTE: Do not install the parts if 4 minutes or more have elapsed since applying liquid gasket. Instead, reapply liquid gasket after removing old the residue.
    Fig 2: Identifying Engine Block Mating Surface Of Lower Block For Applying Liquid Gasket
    G03692457Courtesy of AMERICAN HONDA MOTOR CO., INC.
  15. Put the lower block on the engine block.
  16. Tighten the bearing cap bolts is sequence to 29 N.m (3.0 kgf.m, 22 lbf.ft).
    Fig 3: Identifying Tightening Sequence Of Bearing Cap Bolts
    G03692458Courtesy of AMERICAN HONDA MOTOR CO., INC.
  17. Tighten the bearing cap bolts an additional 60 °.
    Fig 4: Identifying Bearing Cap Bolts Additional Tightening Angle
    G03692459Courtesy of AMERICAN HONDA MOTOR CO., INC.
  18. Tighten the 8 mm bolts in sequence to 22 N.m (2.2 kgf.m, 16 lbf.ft).
    Fig 5: Identifying Tightening Sequence Of Bolts
    G03692460Courtesy of AMERICAN HONDA MOTOR CO., INC.
  19. Use the special tools to drive a new oil seal squarely into the block to the specified installed height.
    Fig 6: Installing New Oil Seal Into Block
    G03692461Courtesy of AMERICAN HONDA MOTOR CO., INC.
  20. Measure the distance between the crankshaft (A) and oil seal (B).

    Oil Seal Installed Height: 5.5-6.5 mm (0.22-0.26 in.) 

    Fig 7: Identifying Distance Between Crankshaft And Oil Seal
    G03692462Courtesy of AMERICAN HONDA MOTOR CO., INC.
  21. Install the oil pump (see INSTALLATION ).
  22. Install the cam chain (see CAM CHAIN INSTALLATION ).
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