Upgrading Your Vehicle from Drum Brakes to Disc Brakes A Step-by-Step Guide

How to Convert Brake Drum to Disc Brakes

Upgrading your vehicle's brake system from drum brakes to disc brakes can significantly enhance your vehicle's stopping power and overall safety. Disc brakes provide improved performance, reduced weight, and better heat dissipation, making them a popular choice for both performance enthusiasts and everyday drivers. Here’s a detailed guide on how to convert brake drum to disc brakes.

Understanding the Basics

Before commencing the conversion, it’s crucial to understand the primary differences between drum and disc brake systems. Drum brakes consist of a cylindrical drum that rotates with the wheel and brake shoes that press against the inner surface to create friction. In contrast, disc brakes use a flat disc attached to the wheel that is clamped by brake calipers and pads to slow down the vehicle.

Moreover, disc brakes generally offer better performance due to their superior cooling capabilities. Heat dissipates more efficiently in disc brakes, reducing brake fade during prolonged use. Additionally, they provide a more responsive braking feel and better wet-weather performance.

Tools and Materials Needed

To perform the conversion, you’ll need several tools and materials. Here’s a list to help you get started

Tools - Jack and jack stands - Wrench set - Socket set - Brake line wrench - Tire removal tool - Brake bleeder kit - Torque wrench

Materials - Disc brake conversion kit (includes discs, calipers, brackets, and necessary hardware) - New brake lines (if required) - Brake fluid - Brake pads for the new calipers

Step-by-Step Conversion Process

1. Lift the Vehicle Start by parking your vehicle on a flat surface and securely lifting it with a jack. Ensure you use jack stands for safety.

2. Remove Wheels and Brake Drums Take off the wheels by loosening the lug nuts. Once the wheels are removed, unbolt and take out the drum brakes. This typically involves removing the springs, backing plate, and associated hardware.

3. Install the New Bracket Most disc brake conversion kits come with specific brackets that you will need to install. Follow the manufacturer’s instructions to securely attach the bracket to the suspension.

4. Attach Disc Rotors Once the bracket is in place, you can mount the new disc rotors. Ensure they are aligned correctly and secured as per the manufacturer’s specifications.

5. Install Calipers The next step is to install the brake calipers onto the brackets. Make sure to use new hardware, if included, to ensure a firm fit. Once the calipers are in place, insert the brake pads into the calipers.

6. Connect Brake Lines If your conversion kit comes with new brake lines, now’s the time to replace the old ones. Make sure to properly flare the lines if necessary, and securely attach them to the calipers. Use a brake line wrench to avoid stripping the fittings.

7. Bleed the Brakes After everything is assembled, it’s vital to bleed the brake system to remove any air bubbles. Use a brake bleeder kit and follow the bleeding sequence according to your vehicle’s specifications.

8. Reinstall Wheels and Lower the Vehicle Once bleeding is complete, reinstall the wheels and lower the vehicle from the jack stands. Tighten the lug nuts in a crisscross pattern to ensure even pressure.

9. Final Checks Before hitting the road, perform a final inspection to double-check all components are secure. Pump the brake pedal several times to seat the brake pads against the rotors.

Conclusion

Converting from drum brakes to disc brakes can be a rewarding project that enhances your vehicle's performance. However, if you’re uncertain about any part of the process, don’t hesitate to consult a professional mechanic. With the right tools, careful attention to detail, and adherence to safety measures, you can enjoy the improved braking performance that comes with your new disc brake system.