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Engine Assembly: Installation

WARNING: This page is about a different car, the 2022 Subaru WRX. However, it is still accessible from the selected car via links, so may be relevant.
  1. Using the ST1, install the ST2 to the engine unit.

    Preparation tool: 

    ST1: BOLT (18363AA050)

    ST2: HANGER (18360AA040)

    Tightening torque: 

    43 N.m (4.4 kgf-m, 31.7 ft-lb)

    G14610591Courtesy of SUBARU OF AMERICA, INC.
  2. Support the engine unit with a lifting device and wire ropes, and remove the engine unit from the engine stand, etc.
  3. Install the engine mounting onto the engine unit.

    Tightening torque: 

    35 N.m (3.6 kgf-m, 25.8 ft-lb)

  4. Place the engine unit in engine compartment and align it with transmission body. (CVT model)
    NOTE:
    • Be careful not to damage adjacent parts or body panels with crank pulley, oil level gauge, etc. 
    • If it is hard to insert the knock pin on the engine unit into the transmission body, precisely adjust the height of the transmission body with garage jack so that no load is applied to the knock pin. 
  5. Apply a small amount of grease to splines of main shaft. (MT model)

    Preparation items: 

    Grease: NICHIMOLY N-130 or equivalent

  6. Position the engine unit in engine compartment, insert the clutch disc into the main shaft, and align it with the transmission body. (MT model)
    NOTE:
    • Be careful not to damage adjacent parts or body panels with crank pulley, oil level gauge, etc. 
    • If it is hard to insert the clutch disc into the main shaft, insert the wrench into the crank pulley bolt, and rotate the crank pulley slightly to insert it. 
    • If it is hard to insert the knock pin on the engine unit into the transmission body, precisely adjust the height of the transmission body with garage jack so that no load is applied to the knock pin. 
  7. With a lifting device and a garage jack, slowly lower the engine unit together with the transmission.
    NOTE:

    Check that the stud bolt of the engine mounting is securely inserted into the engine mounting hole of the crossmember COMPL front. 

  8. Install the bolts which hold the upper side of transmission to the engine unit.

    Tightening torque: 

    50 N.m (5.1 kgf-m, 36.9 ft-lb)

    • CVT model
      G14610594Courtesy of SUBARU OF AMERICA, INC.
    • MT model
      G14610595Courtesy of SUBARU OF AMERICA, INC.
  9. Remove the garage jack.
  10. Remove the lifting device and wire ropes.
  11. Remove the ST1 and ST2 from the engine unit.
    G14610591Courtesy of SUBARU OF AMERICA, INC.
  12. Install the torque converter to drive plate. (CVT model)
    1. Remove the ST from converter case.
      NOTE:

      Be careful not to drop the ST into the converter housing when removing the ST. 

      G14610588Courtesy of SUBARU OF AMERICA, INC.
    2. Insert the wrench into the crank pulley bolt, and rotate the crank pulley to attach the bolts (4 places) securing the torque converter to the drive plate.
      NOTE:

      Be careful not to drop bolts into the converter housing. 

      Tightening torque: 

      25 N.m (2.5 kgf-m, 18.4 ft-lb)

      G14610587Courtesy of SUBARU OF AMERICA, INC.
    3. Fit the plug to service hole.
      G14610586Courtesy of SUBARU OF AMERICA, INC.
  13. Install the starter. Ref. to STARTING/CHARGING SYSTEMS (H4DOTC)>STARTER>INSTALLATION
  14. Place the CVTF cooler (with warmer feature) to CVT, and temporarily tighten the upper bolt which secures the CVTF cooler (with warmer feature). (CVT model)
    G14610585Courtesy of SUBARU OF AMERICA, INC.
  15. Lift up the vehicle.
  16. Install the bolts and nuts which hold the lower side of transmission to the engine unit.

    Tightening torque: 

    50 N.m (5.1 kgf-m, 36.9 ft-lb)

    • CVT model
      G14610583Courtesy of SUBARU OF AMERICA, INC.
    • MT model
      G14610584Courtesy of SUBARU OF AMERICA, INC.
  17. Install the nuts which hold the engine mounting to the crossmember COMPL front.
    CAUTION:

    Be sure to use a new nut. 

    NOTE:

    Make sure that locators (a) of the engine mounting are securely inserted. 

    Tightening torque: 

    90 N.m (9.2 kgf-m, 66.4 ft-lb)

    G14610607Courtesy of SUBARU OF AMERICA, INC.
  18. Connect the ground cord.

    Tightening torque: 

    7.5 N.m (0.8 kgf-m, 5.5 ft-lb)

    G14610580Courtesy of SUBARU OF AMERICA, INC.
  19. Install the lower bolt which secures CVTF cooler (with warmer feature) to the CVT and connect the CVTF cooler (with warmer feature) water hose. (CVT model)

    Tightening torque: 

    23 N.m (2.3 kgf-m, 17.0 ft-lb)

    G14610581Courtesy of SUBARU OF AMERICA, INC.
  20. Remove the ST from between the vehicle and the rear crossmember. (CVT model)
    1. Set the transmission jack to the transmission body.
      NOTE:

      Be careful that the support plate of transmission jack does not touch the transmission oil pan. 

    2. Remove the ST from between the vehicle and the rear crossmember.
      G14610579Courtesy of SUBARU OF AMERICA, INC.
    3. Operate the transmission jack to adjust the transmission body height, and install the bolts which secure the rear crossmember to the vehicle.

      Tightening torque: 

      70 N.m (7.1 kgf-m, 51.6 ft-lb)

      G14610578Courtesy of SUBARU OF AMERICA, INC.
    4. Install the center exhaust cover.

      Tightening torque: 

      18 N.m (1.8 kgf-m, 13.3 ft-lb)

      G14610577Courtesy of SUBARU OF AMERICA, INC.
    5. Remove the transmission jack.
  21. Install the front exhaust pipe.
  22. Tighten the upper bolt which secures the CVTF cooler (with warmer feature) to the CVT. (CVT model)

    Tightening torque: 

    23 N.m (2.3 kgf-m, 17.0 ft-lb)

    G14610585Courtesy of SUBARU OF AMERICA, INC.
  23. Connect the fuel delivery tube and evaporation hose.
    1. Connect the quick connector on the fuel delivery tube (C) to the fuel pipe, and install clip (B) to the intake manifold assembly.
      CAUTION:
      • Check that there is no damage or dust on the quick connector. If necessary, clean the seal surface of the pipe. 
      • When connecting the quick connector, make sure to insert it all the way in before locking the slider. 
      • When it is difficult to lock the slider, check that the connector is fully inserted. 
      • After locking the slider, pull the quick connector itself to the disconnecting direction, and then push to the connecting direction in order to confirm secure connection. Always make sure to perform this confirmation ending up with a pushing in. 
      NOTE:

      Connect the quick connector as shown in the figure. 

      G14610614Courtesy of SUBARU OF AMERICA, INC.
    2. Connect the evaporation hose (A) to the vacuum pipe assembly.
      G14610590Courtesy of SUBARU OF AMERICA, INC.
  24. Place the vacuum pipe, and connect the brake booster vacuum hose to the brake vacuum pump. (MT model)
    NOTE:

    When connecting the brake booster vacuum hose, align the alignment marks (a) on the brake booster vacuum hose and the vacuum pump. 

    G13862471Courtesy of SUBARU OF AMERICA, INC.
    G14610576Courtesy of SUBARU OF AMERICA, INC.
  25. Connect the water hose to the CVTF cooler (with warmer feature). (CVT model)
    G14610574Courtesy of SUBARU OF AMERICA, INC.
  26. Install the pitching stopper.

    CVT model: 

    Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>TRANSMISSION MOUNTING SYSTEM>INSTALLATION>PITCHING STOPPER

    MT model: 

    Ref. to MANUAL TRANSMISSION AND DIFFERENTIAL (TY75)>TRANSMISSION MOUNTING SYSTEM>INSTALLATION>PITCHING STOPPER

  27. Install the clip (F), clip (E) and clip (D), and connect the connector (C), connector (B) and connector (A). (CVT model)
    G14610572Courtesy of SUBARU OF AMERICA, INC.
  28. Install the bolt which secures the vacuum pipe to the engine rear hanger, and connect the connector (B) and connector (A). (MT model)

    Tightening torque: 

    18 N.m (1.8 kgf-m, 13.3 ft-lb)

    G14610573Courtesy of SUBARU OF AMERICA, INC.
  29. Connect the heater inlet hose (A) and the heater outlet hose (B).
    NOTE:

    Be careful not to mix up the heater inlet hose and the heater outlet hose when connecting them. 

    • CVT model
      G14610621Courtesy of SUBARU OF AMERICA, INC.
    • MT model
      G14610622Courtesy of SUBARU OF AMERICA, INC.
    G14610571Courtesy of SUBARU OF AMERICA, INC.
  30. Set the engine wiring harness and secure the engine wiring harness to the bracket with the claw.
    G14600904Courtesy of SUBARU OF AMERICA, INC.
  31. Install the engine wiring harness to the clip (A), and connect the connector (B).
  32. Connect the connector (C) and connector (D) in numerical order shown in figure.
    G14600926Courtesy of SUBARU OF AMERICA, INC.
  33. Set the battery cable assembly, and secure the battery cable assembly with claw (B) and clip (A).
    G14600902Courtesy of SUBARU OF AMERICA, INC.
  34. Connect the hose - pressure suction and the hose & pressure discharge to the A/C compressor. Ref. to AIR CONDITIONER>HOSE AND PIPE>INSTALLATION
  35. Secure the battery cable assembly with the clip (A), and connect the connector (B), connector (C) and terminal (D).

    Tightening torque: 

    15.5 N.m (1.6 kgf-m, 11.4 ft-lb)

    G14600928Courtesy of SUBARU OF AMERICA, INC.
  36. Install the intercooler. Ref. to INTAKE (INDUCTION) (H4DOTC)>INTERCOOLER>INSTALLATION
  37. Install the intake duct No. 1 and intake duct No. 2.

    Intake duct No. 1: 

    Ref. to INTAKE (INDUCTION) (H4DOTC)>INTAKE DUCT>INSTALLATION>INTAKE DUCT NO. 1

    Intake duct No. 2: 

    Ref. to INTAKE (INDUCTION) (H4DOTC)>Intake Duct>INSTALLATION>INTAKE DUCT NO. 2

  38. Install the crossmember support rear RH. Ref. to FRONT SUSPENSION>CROSSMEMBER SUPPORT>INSTALLATION
  39. Install the radiator. Ref. to COOLING (H4DOTC)>RADIATOR>INSTALLATION
  40. Connect the battery ground terminal. Ref. to REPAIR CONTENTS>NOTE>BATTERY
  41. Install the fuel filler cap, and close the fuel filler lid.
  42. Fill engine coolant. Ref. to COOLING (H4DOTC)>ENGINE COOLANT>REPLACEMENT>FILLING OF ENGINE COOLANT
  43. Set the panel COMPL front hood to the normal position. Ref. to REPAIR CONTENTS>NOTE>FRONT HOOD GAS STAY
  44. Install the striker assembly front hood. Ref. to EXTERIOR BODY PANELS>FRONT HOOD>ASSEMBLY
  45. Close the panel COMPL front hood.
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