How to Convert Brake Drum to Disc Brakes A Comprehensive Guide

Upgrading your vehicle's braking system can dramatically improve performance and safety. One of the most popular modifications among automotive enthusiasts is converting brake drums to disc brakes. This change can enhance braking efficiency, reduce heat buildup, and provide better pedal feel. While the conversion process may seem daunting, with the right tools and guidance, it can be a rewarding project. Here’s a comprehensive guide on how to convert brake drum brakes to disc brakes.

Why Convert from Drum to Disc Brakes?

Before diving into the conversion process, it’s essential to understand why you might consider this upgrade. Drum brakes, while effective for certain applications, typically have limitations compared to disc brakes. Disc brakes offer

1. Improved Stopping Power Disc brakes generally provide better performance, especially under heavy loads or in high-speed situations. 2. Heat Dissipation The open design of disc brakes allows for better airflow, which helps to dissipate heat generated during braking. This reduces the likelihood of brake fade. 3. Responsive Feel Many drivers report a firmer pedal feel and more responsive braking with disc brakes. 4. Maintenance Ease While both systems require maintenance, disc brakes are often easier to service and inspect compared to drum brakes.

Tools and Materials Needed

Before you begin, gather the following tools and materials

- Jack and jack stands - Wrench set - Socket set - Brake cleaner - Brake fluid - New disc brake conversion kit (including rotors, calipers, brackets, and hoses) - Brake pads - Torque wrench - Screwdrivers - C-clamp (for compressing calipers)

Step-by-Step Conversion Process

1. Preparation

Begin by ensuring you have adequate space to work and that your vehicle is parked on a flat surface. Secure the vehicle with jack stands after raising it with a jack. Remove the rear or front wheels, depending on which brakes you’re converting.

2. Remove the Brake Drums

Using your wrench set, remove the bolts securing the drum brakes. Carefully detach the drum from the axle. You may need to tap it with a hammer if it’s stuck. Once removed, take off the shoes and springs, making a note of their arrangement for reference.

3. Install the Disc Brake Conversion Kit

Using the provided instructions for your specific conversion kit, install the brake caliper brackets onto the axle. These brackets must be properly aligned to ensure the calipers line up with the rotors. Tighten the bolts to the manufacturer’s specifications using a torque wrench.

4. Mount the Rotors

Next, slide the new brake rotors onto the hub assembly. Make sure they seat correctly against the hub. These may be secured with retaining clips or bolts depending on your kit.

5. Attach the Calipers

Once the rotors are in place, carefully mount the calipers over the rotors, using the mounting hardware provided in your conversion kit. Ensure that the calipers are positioned correctly and tighten the bolts to secure them in place.

6. Connect Brake Lines

You’ll need to install the new brake lines that are typically included in your conversion kit. Ensure they are routed safely and do not interfere with suspension components. Connect the lines to the calipers, ensuring there are no leaks.

7. Install Brake Pads

Insert the brake pads into the calipers. Apply a small amount of high-temperature brake grease to the backing of the pads (not the friction surface) to reduce noise and improve movement.

8. Bleed the Brakes

After ensuring everything is securely in place, you will need to bleed the brakes. This process removes air from the hydraulic system, ensuring your brakes function correctly. Start at the caliper farthest from the master cylinder and work your way closer. Use a brake bleeder tool or a helper to pump the brake pedal while you open and close the bleeder valve on each caliper.

9. Final Checks and Reassemble

Double-check all connections, bolts, and fluid levels. Reinstall the wheels, lower the vehicle, and make sure everything is secure. Finally, test drive the vehicle at a low speed to ensure everything is functioning correctly before driving normally.

Conclusion

Converting from brake drums to disc brakes can significantly enhance your vehicle’s performance. While the process may seem complex, following these steps carefully can lead to a successful upgrade. Always remember to consult your vehicle’s manual and consider reaching out to a professional if you encounter any challenges. With improved braking power, you’ll enjoy safer and more responsive driving.