how to convert rear drum brakes to disc brakes

How to Convert Rear Drum Brakes to Disc Brakes

Upgrading your vehicle's braking system from rear drum brakes to disc brakes is one of the best modifications you can make, especially for improved safety and performance. While it may seem like a daunting task, it is a worthwhile investment for any car enthusiast or someone looking to enhance their vehicle's stopping power. This article provides a comprehensive guide on how to convert rear drum brakes to disc brakes, highlighting the benefits of this upgrade and the steps involved in the process.

Benefits of Converting to Disc Brakes

Before diving into the conversion process, it is important to understand the advantages of disc brakes over drum brakes.

1. Improved Braking Performance Disc brakes offer better stopping power due to their ability to dissipate heat more efficiently. This is particularly important during repeated stops or when driving in hilly areas.

2. Reduced Brake Fade Brake fade occurs when the braking system overheats and loses effectiveness. Disc brakes are designed to withstand high temperatures, significantly reducing the chances of brake fade.

3. Easier Maintenance Disc brakes are simpler to service than drum brakes. Brake pads are more accessible than shoes, making replacements quicker and typically less expensive.

4. Better Aesthetic Many car enthusiasts prefer the look of disc brakes, as they often come with options for performance calipers and rotors that enhance the overall appearance of the wheel setup.

Tools and Materials Needed

Before starting the conversion, ensure you have the necessary tools and materials

- New disc brake assemblies (calipers, rotors, pads) - Brake lines (if required) - Brake fluid - Wrenches and sockets - Jack and jack stands - Torque wrench - Brake cleaner and pads - Safety goggles

Conversion Steps

1. Prepare the Vehicle Begin by safely lifting and securing the vehicle with jack stands. Remove the rear wheels to gain access to the drum brake assembly.

2. Remove the Drum Brakes Disconnect the brake lines from the drum assembly. Remove the drum by taking out the retaining screws and pulling the drum off the spindle. You may need to adjust the brake shoes to decrease tension before removal.

3. Remove the Old Components After the drum is off, disconnect the brake shoes, springs, and any other associated parts from the backing plate. This can be a little tricky, so take your time to avoid damaging any components that might be reused.

4. Install the New Brake Spindle If your disc brake conversion kit includes a new spindle or hub, install it according to the manufacturer’s instructions. Ensure all bolts are torqued to the recommended specifications.

5. Mount the Brake Calipers Attach the caliper brackets to the new spindle/hub assembly. Then, install the calipers themselves, ensuring that the brake line connections are oriented correctly.

6. Install the Rotors Slide the new rotors onto the hub. Make sure they are seated correctly and secured with any retaining bolts if provided.

7. Connect Brake Lines If the conversion requires new brake lines, install those now. Make certain all connections are snug but not overtightened, as this could damage the lines.

8. Install Brake Pads Insert the brake pads into the calipers. Ensure proper alignment and make certain that they slide easily.

9. Bleed the Brakes Before reattaching the wheels, it’s crucial to bleed the brake system to remove any air trapped in the lines. This is done by having an assistant pump the brake pedal while you open and close the bleed valve on the calipers.

10. Final Checks and Reassembly Reinstall the wheels, lower the vehicle, and do a thorough check of everything to ensure it's correctly assembled. Test the brakes at low speeds to ensure proper functionality before hitting the road.

Conclusion

Converting rear drum brakes to disc brakes can significantly enhance your vehicle's braking performance and reliability. Although the process requires a good understanding of vehicle mechanics and some specialized tools, it is a rewarding project for those willing to put in the effort. With better braking capability and lower maintenance needs, this upgrade is an excellent way to invest in your vehicle's safety and performance. Always remember to follow your specific vehicle's manual and consider consulting a professional if you're not comfortable with any part of the conversion process.