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Cylinder Head Installation

WARNING: This page is about a different car, the 2013 Acura MDX, 2012 Acura MDX, 2011 Acura MDX, and 2010 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.
  1. Clean the cylinder head and engine block surface.
  2. Clean and install the oil control orifices (A). Always use new O-rings(B).
    Fig 1: Identifying Oil Control Orifices, O-Rings, Dowel Pins And Cylinder Head Gaskets
    G08052249Courtesy of AMERICAN HONDA MOTOR CO., INC.
  3. Install the dowel pins (C) and new cylinder head gaskets (D).
  4. Clean the timing belt pulleys, timing belt guide plate, and the upper and lower covers.
  5. Set the timing belt drive pulley to top dead center (TDC) by aligning the TDC mark (A) on the tooth of the timing belt drive pulley with the pointer (B) on the oil pump.
    Fig 2: Aligning TDC Mark On Tooth Of Timing Belt Drive Pulley With Pointer On Oil Pump
    G08052250Courtesy of AMERICAN HONDA MOTOR CO., INC.
  6. Set the camshaft pulleys to TDC by aligning the TDC marks (A) on the camshaft pulleys with the pointers (B) on the back covers.

    FRONT 

    Fig 3: Aligning TDC Marks On Camshaft Pulleys With Pointers On Back Covers (Front)
    G08052251Courtesy of AMERICAN HONDA MOTOR CO., INC.

    REAR 

    Fig 4: Aligning TDC Marks On Camshaft Pulleys With Pointers On Back Covers (Rear)
    G08052252Courtesy of AMERICAN HONDA MOTOR CO., INC.
  7. Install the cylinder heads on the engine block.
  8. Measure the diameter of each cylinder head bolt at point A and point B.
    Fig 5: Identifying Cylinder Head Bolt Diameter Measuring Points
    G08052253Courtesy of AMERICAN HONDA MOTOR CO., INC.
  9. If either diameter is less than 11.3 mm (0.44 in), replace the cylinder head bolt.
  10. Apply new engine oil to the threads and under the bolt heads of all cylinder head bolts.
  11. Torque the cylinder head bolts in sequence to 30 N.m (3.0 kgf.m, 22 lbf.ft) with use a beam-type torque wrench. When using a preset click-type torque wrench, be sure to tighten slowly and do not overtighten. If a bolt makes any noise while you are torquing it, loosen the bolt and retighten it from the first step.

    FRONT 

    Fig 6: Identifying Front Cylinder Head Bolts Tightening Sequence
    G08052254Courtesy of AMERICAN HONDA MOTOR CO., INC.

    REAR 

    Fig 7: Identifying Rear Cylinder Head Bolts Tightening Sequence
    G08052255Courtesy of AMERICAN HONDA MOTOR CO., INC.
  12. After torquing, tighten all cylinder head bolts in two steps (90 ° per step) using the sequence shown in step  11. If you are using a new cylinder head bolt, tighten the bolt an extra 90 °.
    NOTE: Remove the cylinder head bolt if you tightened it beyond the specified angle, and go back to step  8 of the procedure. Do not loosen it back to the specified angle.
    Fig 8: Tightening Procedure Of Cylinder Head Bolts
    G08052256Courtesy of AMERICAN HONDA MOTOR CO., INC.
  13. Install the timing belt (see TIMING BELT INSTALLATION  ).
  14. Adjust the valve clearance (see VALVE CLEARANCE ADJUSTMENT  ).
  15. Install the cylinder head covers (see CYLINDER HEAD COVER INSTALLATION  ).
  16. Install the water passage (see WATER PASSAGE REPLACEMENT ).
  17. Install the injector bases (see INJECTOR BASE REMOVAL AND INSTALLATION ).
  18. Install the connector bracket to the front cylinder head.
    Fig 9: Connector Bracket Bolts With Torque Specifications
    G08052257Courtesy of AMERICAN HONDA MOTOR CO., INC.
  19. Install the engine mount control solenoid valve bracket (A) to the rear cylinder head.
    Fig 10: Engine Mount Control Solenoid Valve Bracket And Bolts With Torque Specifications
    G08052258Courtesy of AMERICAN HONDA MOTOR CO., INC.
  20. Connect the fuel feed hose (A), then install the quick-connect fitting cover (B) (see FUEL LINE/QUICK-CONNECT FITTING INSTALLATION ).
    Fig 11: Identifying Fuel Feed Hose And Quick-Connect Fitting Cover
    G08052259Courtesy of AMERICAN HONDA MOTOR CO., INC.
  21. Install the front warm up TWC (see WARM UP TWC REMOVAL/INSTALLATION ) and the rear warm up TWC (see REAR (BANK 1) ).
  22. Connect the following engine wire harness connectors, and install the wire harness clamps to the cylinder head;
    • Six injector connectors
    • Knock sensor connector
    • ECT sensor 1 connector
    • Engine mount control solenoid valve connector
    • EGR valve connector
    • CMP sensor connector
    • Rocker arm oil control solenoid connector
    • Rocker arm oil pressure switch connector
    • Two A/F sensor connectors
    • Two secondary HO2S connectors
  23. Install the six ignition coils (see IGNITION COIL AND SPARK PLUG REMOVAL/INSTALLATION ).
  24. Install the intake manifold (see INSTALLATION ).
  25. Install the alternator (see INSTALLATION ).
  26. Do the battery terminal reconnection procedure (see RECONNECTION ).
  27. After installation, check that all tubes, hoses, and connectors are installed correctly.
  28. Inspect for fuel leaks. Turn the ignition switch to ON (II) (do not operate the starter) so the fuel pump runs for about 2 seconds and pressurizes the fuel line. Repeat this operation three times, then check for fuel leakage at any point in the fuel line.
  29. Refill the radiator with engine coolant, and bleed the air from the cooling system (see step 9 under COOLANT REPLACEMENT ).
  30. Check for fluid leaks.
  31. Do the PCM idle learn procedure (see PCM IDLE LEARN PROCEDURE ).
  32. Do the CKP pattern clear/CKP pattern learn procedure (see HDS CLEAR COMMAND ).
  33. Inspect the idle speed (see IDLE SPEED INSPECTION ).
  34. Inspect the ignition timing (see IGNITION TIMING INSPECTION ).
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