How To Replace Your Subaru's Turbocharger

Introduction

This tutorial will guide you through the process of replacing the turbocharger in your Subaru, applicable to various models like the WRX, STI, Forester XT, Outback XT, and Baja. Whether you are opting for an OEM replacement or an aftermarket unit, these step-by-step instructions will help you complete the task efficiently.

Step 1: Gather Necessary Tools and Parts

Before starting the replacement process, make sure you have the following tools and parts ready:

• Tools Needed:

  • Socket set
  • Torque wrench
  • Pliers
  • Screwdrivers
  • Coolant funnel

• Parts Needed:

  • Turbocharger (OEM or aftermarket)
  • Turbo to downpipe gasket
  • Turbo to up-pipe gasket
  • Turbo oil drain line
  • Oil feed line kit (only if needed)
  • Optional: Turbo blanket

• Helpful Links:

  • Shop Subaru Parts with code SMEEDIA
  • Coolant Funnel
  • Turbo to Downpipe Gasket
  • Turbo to Up-pipe Gasket
  • Turbo Oil Drain Line
  • IAG Oil Feedline Kit

Step 2: Prepare Your Vehicle

• Safety First:

  • Ensure the vehicle is parked on a level surface and turn off the engine.
  • Disconnect the battery to prevent any electrical issues.

• Remove Engine Cover:

  • If applicable, remove any engine covers to access the turbocharger.

• Drain Coolant:

  • Use a coolant funnel to drain the coolant from the radiator.

Step 3: Disconnect Turbo Components

• Remove Intake and Exhaust Connections:

  • Disconnect the intake pipe from the turbocharger.
  • Remove the exhaust downpipe and up-pipe connections.

• Disconnect Oil Lines:

  • Carefully detach the oil feed line and the oil drain line from the turbo.

• Unplug Electrical Connections:

  • If your turbo has any electrical connectors, ensure they are unplugged.

Step 4: Remove the Old Turbocharger

• Unbolt the Turbo:

  • Remove the bolts securing the turbocharger to the engine. Keep track of which bolts go where for reinstallation.

• Take Out the Turbo:

  • Gently lift the turbocharger out of its position. Be cautious of any remaining fluids.

Step 5: Install the New Turbocharger

• Position the New Turbo:

  • Place the new turbocharger in the same position as the old one. Ensure proper alignment of the mounting points.

• Secure with Bolts:

  • Reinstall the bolts that hold the turbo in place and tighten them to the manufacturer’s specified torque settings.

Step 6: Reconnect Components

• Reconnect Oil Lines:

  • Reattach the oil feed and drain lines securely.

• Reinstall Intake and Exhaust Connections:

  • Connect the intake pipe and reinstall the exhaust downpipe and up-pipe.

• Reattach Electrical Connectors:

  • If applicable, plug in any electrical connectors to the turbo.

Step 7: Refill Coolant and Reconnect Battery

• Refill Coolant:

  • Use the coolant funnel to refill the radiator with coolant.

• Reconnect Battery:

  • Reconnect the battery terminals.

Step 8: Test the New Turbo

• Start the Engine:

  • Turn on the engine and let it idle for a few minutes. Check for any leaks or unusual noises.

• Take for a Test Drive:

  • After confirming there are no issues, take the vehicle for a short test drive to ensure the turbo is functioning correctly.

Conclusion

Replacing your Subaru's turbocharger can be a straightforward process if you follow these steps carefully. Ensure you gather all necessary tools and parts, take your time during disassembly and reassembly, and verify everything is properly connected and sealed. With these tips, you can successfully replace your turbo and enjoy the performance benefits. If you encounter any issues, consider consulting with a professional mechanic for assistance.