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Cylinder Head Gasket (FA20): Installation

  1. Cylinder head gasket NO. 2 installation
    1. Operate the engine stand, and make the bank 2 side face upward.
    2. Clean the bolt holes in the cylinder block (block 2 side).
      CAUTION: To avoid erroneous tightening of the bolts, clean out the bolt holes sufficiently by blowing with compressed air to eliminate engine coolant etc.
    3. Apply THREE BOND 1217G/1217H or equivalent to both sides of a new cylinder head gasket NO. 2 as shown in the figure.
      G12586559Courtesy of SUBARU OF AMERICA, INC.
      CAUTION:
      • Clean and degrease the installation surface.
      • Install within 5 min. after applying liquid gasket.
    4. Install the cylinder head gasket NO. 2.
  2. Cylinder head LH installation
    1. Clean the cylinder head bolt threads and apply sufficient new engine oil to the washer and cylinder head bolts threads.
    2. Set the cylinder block (bank 2 side) on the cylinder head LH.
    3. Tighten the six cylinder head bolts in the order as shown in the figure.

      Standard value: T=20N. m {204kgf. cm} {14. 8ft. lbf}

      Fig 1: Cam Carrier LH Bolts (Tightening Sequence)
      G08554156Courtesy of SUBARU OF AMERICA, INC.
    4. Retighten the six cylinder head bolts in the same order.

      Standard value: T=100N. m {1020kgf. cm} {73. 8ft. lbf}

      CAUTION: If the bolt makes stick-slip sound during tightening, clean the bolt holes and installation surface, dry them completely, and then repeat the steps from the application of seal gasket.
      NOTE: When repeating the steps, the cylinder head gasket can be reused.
      Fig 2: Cylinder Head Bolts (Loosening Sequence)
      G08554154Courtesy of SUBARU OF AMERICA, INC.
    5. Loosen the six cylinder head bolts by 360° in the order as shown in the figure.
      Fig 3: Cylinder Head Bolts (Tightening Sequence)
      G08554156Courtesy of SUBARU OF AMERICA, INC.
    6. Tighten the six cylinder head bolts in the order as shown in the figure.

      Standard value: T=20N. m {204kgf. cm} {14. 8f. tlbf}

    7. Retighten the six cylinder head bolts in the same order.

      Standard value: T=42N. m {428kgf. cm} {31. 0ft. lbf}

    8. Retighten the six cylinder head bolts by 100° using an angle gauge in the order as shown in the figure.
      Fig 4: Cylinder Head Bolts (Tightening Sequence)
      G12586563Courtesy of SUBARU OF AMERICA, INC.
    9. Retighten the two cylinder head bolts by 100° using an angle gauge in the order as shown in the figure.
      Fig 5: Cylinder Head Bolts (Tightening Sequence)
      G11258522Courtesy of SUBARU OF AMERICA, INC.
      Fig 6: Cylinder Head Bolts (Tightening Sequence)
      G11258523Courtesy of SUBARU OF AMERICA, INC.
    10. Retighten the four cylinder head bolts by 50° using an angle gauge in the order as shown in the figure.
  3. Cam carrier LH installation (Refer to INSTALLATION )
  4. Cylinder head gasket installation
    1. Operate the engine stand, and make the bank 1 side face upward.
    2. Clean the bolt holes in the cylinder block (block 1 side).
      CAUTION: To avoid erroneous tightening of the bolts, clean out the bolt holes sufficiently by blowing with compressed air to eliminate engine coolant etc.
    3. Apply THREE BOND 1217G/1217H or equivalent to both sides of a new cylinder head gasket as shown in the figure.
      G12586566Courtesy of SUBARU OF AMERICA, INC.
      CAUTION:
      • Clean and degrease the installation surface.
      • Install within 5 min. after applying liquid gasket.
    4. Attach the cylinder head gasket.
  5. Cylinder head RH installation
    1. Clean the cylinder head bolt threads and apply sufficient new engine oil to the washer and cylinder head bolts threads.
    2. Set the cylinder block (bank 1 side) on the cylinder head RH.
    3. Tighten the six cylinder head bolts in the order as shown in the figure.

      Standard value: T=20N. m {204kgf. cm} {14. 8f. tlbf}

      Fig 7: Cylinder Head Bolts (Tightening Sequence)
      G12586567Courtesy of SUBARU OF AMERICA, INC.
    4. Retighten the six cylinder head bolts in the same order.

      Standard value: T=100N. m {1020kgf. cm} {73. 8ft. lbf}

      CAUTION: If the bolt makes stick-slip sound during tightening, clean the bolt holes and installation surface, dry them completely, and then repeat the steps from the application of seal gasket.
      NOTE: When repeating the steps, the cylinder head gasket can be reused.
    5. Loosen the six cylinder head bolts by 360° in the order as shown in the figure.
      Fig 8: Cylinder Head Bolts (Loosening Sequence)
      G12586568Courtesy of SUBARU OF AMERICA, INC.
    6. Tighten the six cylinder head bolts in the order as shown in the figure.

      Standard value: T=20N. m {204kgf. cm} {14. 8f. tlbf}

      Fig 9: Cylinder Head Bolts (Tightening Sequence)
      G12586569Courtesy of SUBARU OF AMERICA, INC.
    7. Retighten the six cylinder head bolts in the same order.

      Standard value: T=42N. m {428kgf. cm} {31. 0ft. lbf}

    8. Retighten the six cylinder head bolts by 100° using an angle gauge in the order as shown in the figure.
      Fig 10: Cylinder Head Bolts (Tightening Sequence)
      G12586570Courtesy of SUBARU OF AMERICA, INC.
      NOTE: Install a temporary bolt to secure an angle gauge as required.
      Fig 11: Cylinder Head Bolts (Tightening Sequence)
      G11258529Courtesy of SUBARU OF AMERICA, INC.
    9. Retighten the two cylinder head bolts by 100° using an angle gauge in the order as shown in the figure.
      Fig 12: Cylinder Head Bolts (Tightening Sequence)
      G11258530Courtesy of SUBARU OF AMERICA, INC.
    10. Retighten the four cylinder head bolts by 50° using an angle gauge in the order as shown in the figure.
  6. Cam carrier RH installation (Refer to INSTALLATION )
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