how to convert rear drums to disc brakes

How to Convert Rear Drums to Disc Brakes

Upgrading your vehicle’s braking system is one of the most effective ways to improve its performance and safety. One popular modification among car enthusiasts is converting rear drum brakes to disc brakes. This upgrade not only enhances stopping power but also improves brake cooling and reduces maintenance. Here’s a detailed guide on how to make this conversion.

Understanding the Benefits

Before diving into the conversion process, it’s vital to understand why many choose to upgrade to disc brakes. Disc brakes provide several advantages over drum brakes, including

1. Increased Stopping Power Disc brakes generally offer better performance under heavy braking, especially in demanding conditions like racing or towing. 2. Improved Heat Dissipation The exposed design of disc brakes allows for better cooling, reducing brake fade during prolonged use. 3. Less Maintenance Disc brakes are easier to inspect and maintain compared to drum brakes, which can become difficult to service once they wear out. 4. Modern Look Aesthetic appeal is another factor; disc brakes give your vehicle a more modern and sporty look.

Materials and Tools Needed

Once you’ve decided to proceed with the conversion, gather the necessary materials and tools. You will typically need

- New rear disc brake conversion kit (includes rotors, calipers, pads, and brackets) - Brake lines and hoses - Master cylinder upgrade (if required) - Anti-roll or adjustable proportioning valve (if needed) - Hand tools (wrenches, sockets, screwdrivers) - Jack, jack stands, and wheel chocks - Brake cleaner and lubricant

1. Preparation - Park your vehicle on a flat surface and engage the parking brake. - Loosen the lug nuts on the rear wheels before lifting the vehicle with a jack.

2. Remove Rear Drums - Remove the wheels and take off the brake drums by unbolting them. You may need to tap them lightly if they are stuck.

3. Remove Existing Brake Components - Detach the backing plate, brake shoes, and springs carefully. Keep track of where each component is located for easier reassembly of the new system.

4. Install New Brake Components - Attach the new brackets that come with your conversion kit to the rear axle housing. - Install the new rotors onto the axle. Ensure they fit snugly and are properly aligned.

5. Mount Calipers - Fix the calipers to the newly installed brackets. Make sure to follow the specific instructions provided with your kit regarding orientation and torque settings.

6. Connect Brake Lines - Install new brake hoses to connect the calipers to the brake lines. Make sure the hoses are routed correctly to avoid any interference with moving parts.

7. Fill and Bleed the Brake System - Before reassembling everything, top off the brake fluid and bleed the brakes to remove any air from the system. This step is crucial for ensuring responsive braking performance.

8. Reassemble and Test - Reattach the wheels, lower the vehicle, and securely tighten the lug nuts. Take the vehicle for a test drive to ensure that the new brakes are functioning correctly. Pay attention to any unusual noises or braking issues.

Conclusion

Converting rear drum brakes to disc brakes is a worthwhile investment for those seeking enhanced performance and safety. While it’s a moderately complex project, having the right tools and following a systematic approach can yield excellent results. Always consider consulting a professional if you're not confident in your mechanical skills. With this upgrade, you’ll enjoy better braking efficiency and a more enjoyable driving experience.