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Crankshaft and Piston Installation

Special Tools Required 

  1. Measure the diameter of each connecting rod bolt at point A and point B.
    Fig 1: Identifying Connecting Rod Bolt Dimension
    G04545753Courtesy of AMERICAN HONDA MOTOR CO., INC.
  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.) 

  3. If the difference in diameter is out of tolerance, replace the connecting rod bolt.
  4. Check the connecting rod bearing clearance with plastigage (see CONNECTING ROD BEARING REPLACEMENT  ).
  5. Check the main bearing clearance with plastigage (see CRANKSHAFT MAIN BEARING REPLACEMENT  ).
  6. Install the bearing halves in the engine block and connecting rods.
  7. Apply new engine oil to inside of the main bearings and rod bearings.
  8. Lower the crankshaft (A) into the engine block.
    Fig 2: Installing Crankshaft Into Engine Block
    G04545754Courtesy of AMERICAN HONDA MOTOR CO., INC.
  9. Apply new engine oil to the side with the thrust washer groove. Install the thrust washers (A) in the No. 3 journal.
    Fig 3: Installing Thrust Washers In No. 3 Journal
    G04545755Courtesy of AMERICAN HONDA MOTOR CO., INC.
  10. Install the bearings (A) and bearing caps (B) with the arrow (C) facing the timing belt end of the engine.
    Fig 4: Installing Bearings And Bearing Caps
    G04545756Courtesy of AMERICAN HONDA MOTOR CO., INC.
  11. Apply new engine oil to the bolt threads and flanges, then loosely install the bearing cap bolts (D) and bearing cap side bolts (E).
  12. Set the crankshaft to bottom dead center (BDC) for the cylinder you are installing the piston in.
  13. Apply new engine oil to the piston, inside of the ring compressor, and the cylinder bore.
  14. Attach the ring compressor to the piston/connecting rod assembly, and check that the bearing is securely in place.
  15. Position the piston/connecting rod assembly with the arrow (A) facing the timing belt side of the engine.
    Fig 5: Identifying Piston/Connecting Rod Assembly Position
    G04545757Courtesy of AMERICAN HONDA MOTOR CO., INC.
  16. Position the piston/connecting rod assembly in the cylinder, and tap it in using the wooden handle of a hammer (A). Maintain downward force on the ring compressor (B) to prevent the rings from expanding before entering the cylinder bore.
    Fig 6: Installing Piston/Connecting Rod Assembly In Cylinder
    G04545758Courtesy of AMERICAN HONDA MOTOR CO., INC.
  17. Stop after the ring compressor pops free, and check the connecting rod-to-crank journal alignment before pushing the piston into place.
  18. Line up the mark (A) on the connecting rod and cap, then install the cap.
    Fig 7: Installing Connecting Rod Cap
    G04545759Courtesy of AMERICAN HONDA MOTOR CO., INC.
  19. Apply new engine oil to the bolt threads and flanges. Torque the bolts (B) to 20 N.m (2.0 kgf.m, 14 lbf.ft).
    Fig 8: Identifying Connecting Rod Bolt
    G04545760Courtesy of AMERICAN HONDA MOTOR CO., INC.
  20. Mark the connecting rod (A) and bolt head (B) as shown.
  21. Tighten the bolt until the mark on the bolt head lines up with the mark on the connecting rod (turn the bolt 90°).
    Fig 9: Identifying Connecting Rod Bolts Tightening Sequence
    G04545761Courtesy of AMERICAN HONDA MOTOR CO., INC.
  22. Tighten the bearing cap bolts, and then the bearing cap side bolts to the specified torque in the sequence as shown. Repeat the torque sequence again to measure the bolts are properly torqued.
  23. Remove any old liquid gasket from the engine block end cover mating surfaces, bolts, and bolt holes.
  24. Clean and dry the engine block end cover mating surfaces.
  25. Apply a light coat of multipurpose grease to the crankshaft and to the lip of the seal.
  26. Drive the new crankshaft oil seal until the special tool bottoms on the engine block end cover.
    Fig 10: Installing Crankshaft Oil Seal
    G04545762Courtesy of AMERICAN HONDA MOTOR CO., INC.
  27. Apply liquid gasket, P/N 08717-0004, 08718-0001, 08718-0003, or 08718-0009, evenly to the engine block mating surface of the engine block end cover. Install the dowel pins (A), new O-ring (B), and the engine block end cover (C) on the engine block. Clean the excess grease off the crankshaft, and check the seal for distortion.
    NOTE: Do not install the parts if 4 minutes or more have elapsed since applying the liquid gasket. Instead, re-apply liquid gasket after removing the old residue.
    Fig 11: Installing Engine Block End Cover
    G04545763Courtesy of AMERICAN HONDA MOTOR CO., INC.
  28. After assembly, wait at least 30 minutes before filling the engine with new engine oil.
  29. Remove any old liquid gasket from the oil pump mating surfaces, bolts, and bolt holes.
  30. Clean and dry the oil pump mating surfaces.
  31. Install the oil pump (A).
    • -1 Install a new crankshaft oil seal in the oil pump (see step 2 in INSTALLATION ).
    • -2 Apply liquid gasket, P/N 08717-0004, 08718-0001, 08718-0003, or 08718-0009, evenly to the block mating surface of the oil pump.
      NOTE: Do not install the parts if 4 minutes or more have elapsed since applying the liquid gasket. Instead, re-apply liquid gasket after removing the old residue.
    • -3 Grease the lip of the oil seal, and apply oil to the new O-ring (B).
    • -4 Install the dowel pins (C), then align the oil pump inner rotor with the crankshaft, and install the oil pump.
    • -5 Clean the excess grease off the crankshaft, and check the seal for distortion.
      Fig 12: Installing Oil Pump
      G04545764Courtesy of AMERICAN HONDA MOTOR CO., INC.
  32. Install the baffle plate (D), then install the new O-ring (E) and the oil screen (F).
  33. Install the VTEC solenoid valve/oil filter assembly (A), with a new VTEC solenoid valve filter (B).
    Fig 13: Installing VTEC Solenoid Valve/Oil Filter Assembly
    G04545765Courtesy of AMERICAN HONDA MOTOR CO., INC.
  34. Install the oil pan (see OIL PAN INSTALLATION  ).
  35. Install the timing belt drive pulley (see TIMING BELT DRIVE PULLEY REPLACEMENT ).
  36. Install the crankshaft position (CKP) sensor A/B (see CKP SENSOR REPLACEMENT ).
  37. Install the cylinder heads (see CYLINDER HEAD INSTALLATION ).
  38. Install the drive plate (see DRIVE PLATE REMOVAL AND INSTALLATION ).
  39. Install the transmission (see TRANSMISSION INSTALLATION ).
  40. Install the engine assembly (see ENGINE INSTALLATION ).
    NOTE: When any crankshaft or connecting rod bearing is replaced, after assembly it is necessary to run the engine at idling speed until it reaches normal operating temperature, then continue to run it for about 15 minutes.
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