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Cylinder Head: Installation

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  1. Apply liquid gasket to the mating surface of cylinder block shown in the figure.
    NOTE:
    • Install within 5 min. after applying liquid gasket.
    • Do not apply liquid gasket excessively. If too much is applied, remove any liquid gasket that is squeezed out.

    Liquid gasket: 

    THREE BOND 1217G (Part No. K0877Y0100) or equivalent 

    Liquid gasket applying diameter: 

    3.5±1.0 mm (0.138±0.039 in) 

    • LH side
      Fig 1: Applying Liquid Gasket To Mating Surface Of Cylinder Block (LH Side)
      G08581381Courtesy of SUBARU OF AMERICA, INC.
    • RH side
      Fig 2: Applying Liquid Gasket To Mating Surface Of Cylinder Block (RH Side)
      G08581382Courtesy of SUBARU OF AMERICA, INC.
  2. Install the cylinder head gaskets LH and RH onto the cylinder block.
    NOTE: Use a new cylinder head gasket.
  3. Apply liquid gasket to the mating surface of cylinder head gasket shown in the figure.
    NOTE:
    • Install within 5 min. after applying liquid gasket.
    • Do not apply liquid gasket excessively. If too much is applied, remove any liquid gasket that is squeezed out.

    Liquid gasket: 

    THREE BOND 1217G (Part No. K0877Y0100) or equivalent 

    Liquid gasket applying diameter: 

    3.5±1.0 mm (0.138±0.039 in) 

    • LH side
      Fig 3: Applying Liquid Gasket To Mating Surface Of Cylinder Head Gasket (LH Side)
      G06649871Courtesy of SUBARU OF AMERICA, INC.
    • RH side
      Fig 4: Applying Liquid Gasket To Mating Surface Of Cylinder Head Gasket (RH Side)
      G05667866Courtesy of SUBARU OF AMERICA, INC.
  4. Attach the cylinder head to the cylinder block.
    CAUTION: Be careful not to scratch the mating surface of cylinder head and cylinder block.
  5. Tighten the cylinder head bolts.
    1. Apply a thin coat of engine oil to washers and cylinder head bolt threads.
    2. Mount the cylinder head onto the cylinder block, then tighten the bolts with a torque of 20 N.m (2.0 kgf-m, 14.8 ft-lb) in the order indicated in the figure.
    3. Tighten the bolts with a torque of 50 N.m (5.1 kgf-m, 36.9 ft-lb) in the order indicated in the figure.
    4. Loosen all the bolts by 180° in the reverse order of installing, and loosen them further by 180°.
    5. Tighten the bolts with torque of 20 N.m (2.0 kgf-m, 14.8 ft-lb) in numerical sequence as shown in the figure.
    6. Tighten the bolts (1) - (4) in the order indicated with a torque of 48 N.m (4.9 kgf-m, 35.4 ft-lb).
    7. Tighten the bolts (5) - (8) in the order indicated with a torque of 44 N.m (4.5 kgf-m, 32.5 ft-lb).
    8. Tighten all bolts 90° in the numerical order as shown in the figure.
    9. Tighten the bolt (1) - (4) by 45° in the numerical order.
      Fig 5: Identifying Cylinder Head Bolts Tightening Sequence
      G05667867Courtesy of SUBARU OF AMERICA, INC.
  6. Install the seal bolt shown in the figure.
    NOTE: Before installing seal bolts, apply a sealing material to bolt threads.

    Seal material: 

    THREE BOND 1324 (Part No. 004403042) or equivalent 

    Tightening torque: 

    6.4 N.m (0.7 kgf-m, 4.7 ft-lb) 

    Fig 6: Locating Cylinder Head Sealing Bolt
    G05667861Courtesy of SUBARU OF AMERICA, INC.
  7. Install the camshaft. Refer to INSTALLATION .
  8. Install the crank sprocket. Refer to INSTALLATION .
  9. Install the cam sprocket. Refer to INSTALLATION .
  10. Install the timing chain assembly. Refer to INSTALLATION .
  11. Install the chain cover. Refer to INSTALLATION .
  12. Install the crank pulley. Refer to INSTALLATION .
  13. Install the engine to the vehicle. Refer to INSTALLATION .
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