how to upgrade drum brakes to disc brakes

Upgrading your vehicle from drum brakes to disc brakes can significantly enhance its braking performance and overall safety. This transition, while involving some degree of mechanical skill and tools, is quite achievable for most automotive enthusiasts. Here’s a comprehensive guide on how to upgrade your drum brakes to disc brakes effectively.

Understanding the Basics

Before beginning the upgrade, it’s essential to understand the differences between drum brakes and disc brakes. Drum brakes operate using friction created by brake shoes against a spinning drum, whereas disc brakes use brake pads that clamp onto a rotor. Disc brakes offer superior stopping power, better heat dissipation, and less brake fade, especially in high-performance driving conditions or when hauling heavy loads.

Step 1 Gather Necessary Tools and Parts

The first step in your upgrade is to gather the necessary tools and parts. Here's what you will typically need

Tools - Jack and jack stands - Lug wrench - Socket set - Brake cleaner - Screwdriver set - Torque wrench - C-clamp or brake caliper tool

Parts - Disc brake conversion kit (includes calipers, rotors, brackets, and hardware) - New brake pads (often included in the conversion kit) - Brake fluid (DOT 3 or DOT 4, check your vehicle’s specifications) - Brake lines (if needed)

Step 2 Safety First

Always prioritize safety by ensuring you're working in a well-ventilated area with adequate lighting. Use jack stands to secure the vehicle after raising it. Avoid working under a car that is only supported by a jack.

Step 3 Remove the Wheels and Drum Brakes

Once your vehicle is secure, remove the wheels using the lug wrench. Next, you’ll need to remove the drum brake assembly

1. Take off the drum by unbolting it. If it’s stuck, a gentle tap with a rubber mallet may help loosen it. 2. Remove the brake shoes, springs, and any other hardware. Take note of how these components are set up to assist with reassembly, should you need to reference them later. 3. Disconnect the brake line from the wheel cylinder, allowing it to drain into a container for proper disposal.

With the drum brakes removed, it’s time to install the disc brake components

1. Begin by attaching the new backing plate, if applicable, to the axle. 2. Install the new rotors onto the axle. Most kits will require you to use the factory wheel bearings, so be sure they’re in good condition. 3. Mount the caliper brackets that come with your conversion kit. Consult the instructions provided with your kit for specific mounting procedures, as configurations can differ.

Step 5 Attach Calipers and Brake Lines

Once the brackets are securely in place, it’s time to attach the calipers

1. Slide the brake pads into the calipers and position them over the rotors. 2. Secure the caliper using the provided bolts, ensuring they are torqued to the manufacturer’s specifications. 3. Connect the brake lines to the calipers. If your conversion kit requires new brake lines, now is the time to install them. Be sure to use line wrenches to avoid damaging the fittings.

Step 6 Bleed the Brake System

With everything installed, you’ll need to bleed the brake system to remove any air

1. Begin by refilling the brake fluid reservoir. 2. Use a brake bleeder kit or the two-person method (one person pumps the brake pedal while the other opens and closes the bleeder valve on the caliper). 3. Continue the bleeding process until fluid flows without air bubbles, topping off the reservoir as necessary.

Step 7 Test Drive

Once bleeding is complete, reattach the wheels and lower your vehicle. It’s crucial to carry out a test drive to check for any issues. Take it slow at first and ensure that the braking system functions properly under various conditions.

Conclusion

Upgrading from drum brakes to disc brakes can dramatically improve your vehicle’s braking capabilities. While it requires some mechanical skills and careful attention to detail, the safety and performance benefits make it worthwhile. Always consult with professionals if you are uncertain about any step in the process. Happy upgrading!