Step-by-step Installation of a Quaife Lsd in a Bmw E92 M3: from Stock to Track-ready

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The BMW E92 M3 is a beloved model among car enthusiasts, especially for those who enjoy track days. One of the most significant upgrades you can make to improve handling and performance is installing a Quaife Limited Slip Differential (LSD). This article will guide you through the step-by-step process of replacing the stock differential with a Quaife LSD, transforming your M3 from stock to track-ready.

Tools and Materials Needed

Before starting the installation, ensure you have the following tools and materials:

  • Jack and jack stands
  • Torque wrench
  • Socket set
  • Ratchet
  • Impact wrench (optional)
  • Diff fluid
  • Quaife LSD kit
  • New rear differential cover gasket
  • Brake cleaner
  • Shop towels

Preparation

Before you begin the installation, it’s essential to prepare your workspace and vehicle. Follow these steps:

  • Park the BMW E92 M3 on a level surface.
  • Engage the parking brake to prevent any movement.
  • Use a jack to lift the rear of the car and secure it with jack stands.
  • Remove the rear wheels to gain access to the differential.

Removing the Stock Differential

Now that your car is prepared, it’s time to remove the stock differential. Follow these steps carefully:

  • Disconnect the driveshaft from the differential by removing the bolts using a socket wrench.
  • Unbolt the differential mounting brackets and remove the differential from the rear subframe.
  • Carefully lower the stock differential and set it aside.
  • Clean the mounting area on the subframe to ensure a good seal for the new differential.

Installing the Quaife LSD

With the stock differential removed, you can now install the Quaife LSD. Follow these steps:

  • Place the Quaife LSD into the differential housing, ensuring it sits correctly.
  • Reattach the differential mounting brackets and tighten them to the manufacturer’s specifications using a torque wrench.
  • Reconnect the driveshaft to the new LSD, ensuring all bolts are secure.
  • Install the new rear differential cover gasket and cover, tightening the bolts evenly.

Adding Differential Fluid

After the installation of the Quaife LSD, it’s crucial to add the correct differential fluid. Follow these steps:

  • Locate the fill plug on the differential.
  • Use a funnel to pour the appropriate amount of differential fluid into the LSD until it reaches the fill hole.
  • Replace the fill plug and ensure it is tight.

Reassembling the Vehicle

With the new LSD installed and fluid added, it’s time to reassemble the vehicle:

  • Reattach the rear wheels and tighten the lug nuts to the manufacturer’s specifications.
  • Remove the jack stands and lower the car back to the ground.
  • Reconnect the battery if it was disconnected during the process.

Testing the Installation

Before taking your BMW E92 M3 to the track, it’s essential to test the installation:

  • Start the engine and let it idle for a few minutes.
  • Check for any leaks around the differential and ensure everything is secure.
  • Take the car for a short drive, paying attention to how the LSD performs during turns and acceleration.
  • If everything feels right, you are ready to hit the track!

Conclusion

Installing a Quaife LSD in your BMW E92 M3 can significantly enhance its performance, especially on the track. By following these steps, you can ensure a successful installation and enjoy the benefits of improved handling and traction. Happy driving!