Front Exhaust Pipe: Installation

Install the turbocharger stay to the engine.
Tightening torque:

30 N.m (3.1 kgf-m, 22.1 ft-lb)

Fig 1: Locating Turbocharger Stay Bolts
Courtesy of SUBARU OF AMERICA, INC.
Install the water pump pulley cover and exhaust pipe stay to the engine and turbocharger stay.
Tightening torque:

19 N.m (1.9 kgf-m, 14.0 ft-lb)

Fig 2: Locating Water Pump Pulley Cover And Exhaust Pipe Stay Bolts
Courtesy of SUBARU OF AMERICA, INC.
While holding the front exhaust pipe with transmission jack, set the front exhaust pipe, and install the nuts which hold the front exhaust pipe to the cylinder head exhaust port.
NOTE: Use a new gasket.

Tightening torque:

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

Fig 3: Locating Front Exhaust Pipe Nuts
Courtesy of SUBARU OF AMERICA, INC.
Attach the bolt which holds the turbocharger stay.
Tightening torque:

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

Fig 4: Locating Turbocharger Stay Bolt
Courtesy of SUBARU OF AMERICA, INC.
Install the oil catch tank. Ref. to INTAKE (INDUCTION) (H4DOTC)>Oil Catch Tank>INSTALLATION .
Set the center exhaust pipe (rear), and temporarily tighten the bolt which holds the center exhaust pipe (rear) to the hanger bracket.

Fig 5: Locating Hanger Bracket Bolt
Courtesy of SUBARU OF AMERICA, INC.
Install the bolts, springs, and nuts which secure the rear exhaust pipe to the center exhaust pipe (rear).
NOTE: Use a new gasket.

Tightening torque:

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

Fig 6: Locating Rear Exhaust Pipe Bolt
Courtesy of SUBARU OF AMERICA, INC.
Install the nuts which secure the center exhaust pipe (rear) to the center exhaust pipe (front).
NOTE: Use a new gasket.

Tightening torque:

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

Fig 7: Locating Center Exhaust Pipe (Rear) Bolt
Courtesy of SUBARU OF AMERICA, INC.
Tighten the bolts which hold center exhaust pipe (rear) to the hanger bracket.
Tightening torque:

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

Fig 8: Locating Hanger Bracket Bolt
Courtesy of SUBARU OF AMERICA, INC.
Install the bolts which secure the intake duct No. 1 to the turbocharger.
NOTE:
- Use new O-rings.
- Be careful not to pinch the O-ring.
Tightening torque:

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

Fig 9: Locating Intake Duct Bolt
Courtesy of SUBARU OF AMERICA, INC.
Connect the vacuum control hose to the wastegate control solenoid valve.

Fig 10: Locating Vacuum Control Hose Of Wastegate Control Solenoid Valve
Courtesy of SUBARU OF AMERICA, INC.
Connect the union screw pipe assembly to the oil pipe assembly, and connect the engine coolant hose to the water pipe RH.
CAUTION: In order to prevent damaging the oil pipe assembly, fix the section (a) shown in the figure when tightening the flare nut on the union screw pipe assembly, and avoid the part from rotating together while tightening the nut.

Tightening torque:

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

Fig 11: Locating Oil Pipe Assembly Union Screw
Courtesy of SUBARU OF AMERICA, INC.
Connect the connector on the rear oxygen sensor to the engine harness, and connect the ground cable to the exhaust pipe cover.
Tightening torque:

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

Fig 12: Locating Connector On Rear Oxygen Sensor To Engine Harness
Courtesy of SUBARU OF AMERICA, INC.
Secure the front oxygen (A/F) sensor harness to the water pump pulley cover with the clip (A), and connect the front oxygen (A/F) sensor connector to the engine harness.

Fig 13: Locating Front Oxygen (A/F) Sensor Connector
Courtesy of SUBARU OF AMERICA, INC.
Install the under cover. Ref. to EXTERIOR/INTERIOR TRIM>Front Under Cover>INSTALLATION .
Lower the vehicle.
Install the bolt which secures the intake duct No. 2 to the turbocharger.
Tightening torque:

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

Fig 14: Locating Intake Duct Bolt
Courtesy of SUBARU OF AMERICA, INC.
Connect the engine coolant hoses to the water pipe assembly.

Fig 15: Locating Engine Coolant Hose Clamp
Courtesy of SUBARU OF AMERICA, INC.
Attach the bolt which secures the water pump pulley cover to the turbocharger stay.
Tightening torque:

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

Fig 16: Locating Water Pump Pulley Cover Bolt
Courtesy of SUBARU OF AMERICA, INC.
Install the radiator sub fan and fan motor assembly. Ref. to COOLING(H4DOTC)>Radiator Sub Fan and Fan Motor>INSTALLATION .
Install the air intake duct (rear). Ref. to INTAKE (INDUCTION) (H4DOTC)>Air Intake Duct>INSTALLATION .
Check the engine oil level and replenish the engine oil if necessary. Ref. to LUBRICATION(H4DO)>Engine Oil>INSPECTION .
Connect the battery ground terminal. Ref. to NOTE>NOTE>BATTERY .
Fill engine coolant. Ref. to COOLING(H4DOTC)>Engine Coolant>REPLACEMENT>FILLING OF ENGINE COOLANT .
Install the collector cover.