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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 (K0877Y0100), THREE BOND 1217H or equivalent 

    Liquid gasket applying diameter: 

    3.5±1.0 mm (0.138±0.039 in) 

    • LH side
      Fig 1: Liquid Gasket Application Area Of Cylinder Block (LH Side)
      G11586133Courtesy of SUBARU OF AMERICA, INC.
    • RH side
    Fig 2: Liquid Gasket Application Area Of Cylinder Block (RH Side)
    G11586134Courtesy 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 (K0877Y0100), THREE BOND 1217H or equivalent 

    Liquid gasket applying diameter: 

    3.5±1.0 mm (0.138±0.039 in) 

    • LH side
      Fig 3: Liquid Gasket Application Area Of Cylinder Head Gasket (LH Side)
      G06649871Courtesy of SUBARU OF AMERICA, INC.
    • RH side
    Fig 4: Liquid Gasket Application Area 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: 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: Identifying Seal Bolt
    G05667861Courtesy of SUBARU OF AMERICA, INC.
  7. Install the camshaft. Ref. to INSTALLATION , Camshaft.
  8. Install the crank sprocket. Ref. to INSTALLATION , Crank Sprocket.
  9. Install the CAM sprocket. Ref. to INSTALLATION , CAM Sprocket.
  10. Install the timing chain assembly. Ref. to INSTALLATION , Timing Chain Assembly.
  11. Install the chain cover. Ref. to INSTALLATION , Chain Cover.
  12. Install the crank pulley. Ref. to INSTALLATION , Crank Pulley.
  13. Install the engine to the vehicle. Ref. to INSTALLATION , Engine Assembly.
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