LEMON Manuals: Even more car manuals for everyone
Home >> Subaru >> 2019 >> WRX STI >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> Engine Intake System (Induction) And Turbocharger (STI) >> Turbocharger >> Installation

Engine Intake System (Induction) And Turbocharger (STI): Turbocharger: Installation

  1. Install the turbocharger stay.

    Tightening torque: 

    T1: 33 N.m (3.4 kgf-m, 24.3 ft-lb)

    T2: 42.5 N.m (4.3 kgf-m, 31.3 ft-lb)

    G13257745Courtesy of SUBARU OF AMERICA, INC.
  2. Connect the oil outlet hose to the oil outlet pipe.
    G05660698Courtesy of SUBARU OF AMERICA, INC.
  3. Connect the engine coolant hose to the lower side of the water pipe.
    G08539101Courtesy of SUBARU OF AMERICA, INC.
  4. Temporarily tighten the union bolts and flare nuts which secure the oil inlet pipe to the turbocharger.
    NOTE: Use a new gasket.
    G08539100Courtesy of SUBARU OF AMERICA, INC.
  5. Tighten the union bolts and flare nuts which secure the oil inlet pipe to the turbocharger.
    CAUTION: In order to prevent damaging the oil pipe on the cylinder head side, fix the section (a) shown in the figure when tightening the oil inlet pipe flare nut, and avoid the part from rotating together while tightening the nut.
    G08539099Courtesy of SUBARU OF AMERICA, INC.

    Tightening torque: 

    T1: 16 N.m (1.6 kgf-m, 11.8 ft-lb)

    T2: 20 N.m (2.0 kgf-m, 14.8 ft-lb)

    G08539109Courtesy of SUBARU OF AMERICA, INC.
  6. Connect the air control hose (A), and install the intake duct to the turbocharger.

    Tightening torque: 

    3 N.m (0.3 kgf-m, 2.2 ft-lb)

    G08539098Courtesy of SUBARU OF AMERICA, INC.
  7. Connect the engine coolant hoses to the upper side of the water pipe.
    G06344981Courtesy of SUBARU OF AMERICA, INC.
  8. Install the joint pipe to turbocharger.
    NOTE: Use a new gasket.

    Tightening torque: 

    42.5 N.m (4.3 kgf-m, 31.3 ft-lb)

    G06344980Courtesy of SUBARU OF AMERICA, INC.
  9. Lift up the vehicle.
  10. Install the center exhaust pipe. Refer to EXHAUST (STI)>CENTER EXHAUST PIPE>INSTALLATION .
  11. Lower the vehicle.
  12. Install the intercooler stay RH No. 2.

    Tightening torque: 

    16 N.m (1.6 kgf-m, 11.8 ft-lb)

    G04998819Courtesy of SUBARU OF AMERICA, INC.
  13. Install the intercooler. Refer to INTAKE (INDUCTION) (STI)>INTERCOOLER>INSTALLATION .
  14. Connect the battery ground terminal.
  15. Fill engine coolant. Refer to COOLING (STI)>ENGINE COOLANT>REPLACEMENT>FILLING OF ENGINE COOLANT .