Steps to Convert Drum Brakes to Disc Brakes for Improved Performance

How to Change from Drum to Disc Brakes A Step-by-Step Guide

Upgrading your vehicle’s braking system from drum brakes to disc brakes can significantly enhance the safety and performance of your car. Disc brakes provide better heat dissipation, improved stopping power, and a more responsive feel, making them a popular choice for automotive enthusiasts and everyday drivers alike. Although this upgrade requires some mechanical skill and knowledge, with the proper tools and instructions, you can successfully make this transition. Here’s a detailed guide on how to change from drum to disc brakes.

Understanding the Basics

Before diving into the process, it's essential to understand the differences between drum and disc brakes. Drum brakes use a curved brake shoe that presses against the inner surface of a spinning drum, while disc brakes employ a flat rotor and caliper system where brake pads clamp down onto the rotor to create friction. The disc brake system generally offers superior performance due to its design, which allows for more efficient heat dissipation and faster engagement.

Tools and Materials Needed

To perform the upgrade, gather the following tools and materials

- Socket and wrench set - Screwdrivers (flathead and Phillips) - Brake cleaner - C-clamp or brake caliper tool - New disc brake conversion kit (which may include rotors, calipers, brake pads, and mounting hardware) - Brake fluid - Jack and jack stands - Wheel chocks - Brake line wrench - Torque wrench - Anti-seize lubricant

Step-by-Step Guide

Step 1 Gather Your Tools and Materials

Ensure you have all the necessary tools and components before beginning the conversion. This will save you time and frustration during the process.

Step 2 Prepare the Vehicle

1. Safety First Park the vehicle on a level surface and engage the parking brake. Place wheel chocks behind the rear wheels to prevent the car from rolling.

2. Lift the Vehicle Use a jack to lift the front or rear (depending on where you’re upgrading) and secure it with jack stands.

Step 3 Remove the Drum Brakes

1. Wheel Removal Take off the wheel to access the drum brakes. Use a lug wrench to loosen and remove the lug nuts.

2. Drum Removal Remove the brake drum by unscrewing any retaining screws and pulling the drum off the hub. You may need to gently tap it with a hammer if it’s stuck.

3. Remove Brake Components Once the drum is off, you’ll see the brake shoes, springs, and hardware. Carefully remove these components, taking note of how everything is assembled for reassembly.

Step 4 Prepare for the Disc Brake Installation

1. Inspect and Clean Check the wheel bearings and other components for wear or damage and clean the hub surface.

2. Install the New Rotors Place the new disc rotors onto the hub, ensuring they are seated correctly.

Step 5 Install Disc Brake Calipers and Pads

1. Caliper Installation Attach the disc brake calipers according to the conversion kit instructions. These typically come with mounting brackets. Secure the caliper using the provided bolts.

2. Install Brake Pads Place the new brake pads into the caliper. Often, one pad will have a shims while the other does not. Ensure they are correctly positioned for proper contact with the rotor.

Step 6 Bleeding the Brakes

Once the calipers and pads are installed, it’s crucial to bleed the brakes to remove any air trapped in the lines, which can lead to a spongy brake pedal.

1. Fluid Reservoir Check the brake fluid reservoir and fill it if necessary.

2. Bleeding Process Starting with the wheel farthest from the master cylinder, use a brake line wrench to loosen the bleeder screw on the caliper while an assistant pushes the brake pedal. Tighten the screw before your assistant releases the pedal. Repeat this until you see clear fluid with no air bubbles.

Step 7 Reassemble and Test

1. Reattach the Wheels Once everything is in place and the brake system is bled, put the wheels back on and secure them with the lug nuts.

2. Lower the Vehicle Carefully lower the vehicle from the jack stands.

3. Test Drive Before hitting the road, pump the brake pedal a few times to ensure proper engagement. Start with a short test drive in a controlled environment to check the braking performance.

Conclusion

Converting from drum to disc brakes is a substantial improvement that can greatly enhance your vehicle's safety and performance. By following these steps carefully and paying attention to detail, you can successfully complete this upgrade. Always remember that if you’re uncertain at any stage of the process, consulting a professional mechanic is recommended to ensure your brakes are installed correctly. Safe driving!