how to change from drum brakes to disc brakes

How to Change from Drum Brakes to Disc Brakes

Upgrading your vehicle’s braking system from drum brakes to disc brakes can significantly enhance your car’s stopping power, improve heat dissipation, and increase overall safety. While it can be a complex project, with the right tools and knowledge, it is a task that can be accomplished by a motivated DIYer. This article will guide you through the process of converting drum brakes to disc brakes, ensuring you understand what you need to do, the parts required, and the steps involved.

Understanding the Differences

Before diving into the conversion process, it's important to understand the differences between drum and disc brakes. Drum brakes consist of a hollow drum that rotates with the wheel and brake shoes that press against the inner surface to create friction. Disc brakes, on the other hand, utilize a flat disc and brake calipers that squeeze brake pads against the disc. Disc brakes generally provide better performance, especially in high-speed or heavy-load conditions, and are less prone to brake fade.

Required Parts and Tools

The first step in your conversion is to gather the necessary parts and tools. The basic components you will need for the conversion include

1. Disc brake conversion kit This typically includes rotors, calipers, brake pads, and mounting hardware. Many kits are available for specific vehicle makes and models. 2. Brake lines You may need new brake lines to accommodate the different setup of disc brakes. 3. Hydraulic master cylinder Depending on your vehicle, you may also need to upgrade to a larger master cylinder to ensure sufficient hydraulic pressure for the disc brakes. 4. Wheel bearings Inspect your current wheel bearings and replace them if necessary. 5. Tools Common tools required for the job include a jack, jack stands, wrenches, a socket set, brake fluid, and possibly a brake line wrench.

1. Preparation Start by parking your vehicle on a level surface, engaging the parking brake, and loosening the lug nuts on the wheels you will be working on. Then, raise the vehicle with a jack and secure it on jack stands.

2. Remove the Drum Brakes Begin by removing the wheels, then the drum brake assembly. This typically involves taking off the brake drum, removing the brake shoes, and disconnecting the brake lines. Make sure to retain any necessary hardware as some components may be reused.

3. Install the Disc Brake Components Next, install the new disc brake setup. This generally includes the following sub-steps - Brake rotor installation Attach the new rotor to the wheel hub. - Caliper installation Mount the new caliper onto the bracket that secures it to the suspension. Ensure that it aligns properly with the rotor. - Brake pads Insert the brake pads into the caliper bracket.

4. Modify Brake Lines If your conversion kit comes with new brake lines, replace the old ones as needed. Make sure to use the correct fittings, and remember to bleed the brake lines to remove any air bubbles from the system.

5. Upgrade the Master Cylinder (if necessary) If your vehicle requires a larger master cylinder, it will need to be disconnected and replaced during this process. Follow the manufacturer’s instructions to ensure proper installation.

6. Reinstall Wheels and Check Everything Once all components are installed, place the wheels back on and tighten the lug nuts. Lower the vehicle and then check the brake pedal's feel, ensuring it feels firm.

7. Brake Fluid and Testing Lastly, top off the brake fluid reservoir and bleed the brakes to ensure there are no air pockets. Test the brakes at low speed before taking them out for a full drive.

Final Thoughts

Converting drum brakes to disc brakes can be a rewarding project that enhances the performance of your vehicle. However, if you're unsure about any part of the process, it’s advisable to consult a professional mechanic. Ensuring your brakes are functioning properly is critical to your safety on the road. With patience and attention to detail, upgrading your braking system can be a successful endeavor that improves both your vehicle’s performance and your driving experience.