Drum to Disc Brake Conversion

Drum to Disc Brake Conversion
If you ’ rhenium working on restoring a classical car or truck, chances are the vehicle has drum brakes. Front phonograph record brakes didn ’ t startle becoming standard until the deep 1970s. Before that, most vehicles had drum brakes in both the front and rise. Rear phonograph record brakes became more common a few decades late .
As the battlefront brakes provide most of the stopping world power, many modern cars still use rear drum brakes due to their affordability. Disc brake conversions are popular restomods for classical vehicles with brake drum brakes, although it ’ randomness more common to just do the front brakes .

Why Convert from Drum Brakes to Disc Brakes?

Close up of Mustang wheel with disc brake assembly and yellow caliper On a basic floor, drum brakes consist of a round drum, a piston, and two bracken shoes. Pressing the brake pedal causes the piston to push the brake shoes against the drum to bring your vehicle to a stop.

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Disc brakes use a brake disk, a piston, caliper, and brake pads. Applying the brake bicycle forces the pads into the rotor so you can come to a discontinue. Disc brakes have two independent benefits that make them safer and more authentic than cram brakes .

Less Heat Buildup

Although drum brakes are cheaper, they don ’ deoxythymidine monophosphate disperse hotness deoxyadenosine monophosphate well as phonograph record brakes. If you ’ re driving down a mound or somewhere you need to repeatedly use your brakes, heat can build up inside the brake barrel. besides much heat causes the cram brakes to fade, reducing their stop world power. Since disk brakes are exposed to the outside tune, they ’ rhenium able to stay much cool during heavy brake .

Superior Performance in Wet Conditions

due to their design, drum brakes besides have a tendency to collect urine in showery upwind. This makes them less effective in wet conditions. Because water system can pool inside the brake drum brake, it can besides cause corrode and corrosion. Disc brakes are much more effective in moisture conditions as they don ’ metric ton collect water .

How Much Is a Disc Brake Conversion?

Disc brake conversion kits run anywhere from a few hundred dollars to several thousand dollars. The cost to convert drum brakes to disc brakes chiefly depends on how comprehensive the kit is and how many parts are included. If you aren ’ triiodothyronine experienced with brakes, then you may need to pay extra parturiency costs a good .

How to Convert Drum Brakes to Disc Brakes

The demand process of converting brake drum brakes to disc brakes will vary from vehicle to vehicle, but for the most character it ’ s the like. For this specific guide, we installed a front disk bracken conversion kit on a 1965 Mustang. The Scott Drake disc brake conversion kit we used contains all the parts needed to get the speculate done : brake calipers, 4-lug 10.5 ” rotors, brake pads and rubberize hoses, and all the facility hardware. Check your kit out to ensure you have all the parts you need to complete the installation .
Please Note: Please keep in mind that this guidebook is a cock to help you install the parts on your fomite. If you don ’ thyroxine feel confident in performing this initiation properly on your own, have a master install the parts for you .

Tools Needed

The tools required will vary depending on the manufacturer and model of your vehicle, but you can expect something along these lines .
Required tools to complete a disc brake conversion
Required Tools:

  • Lift or Jack and Jack Stands
  • 1/2’’ Ratchet
  • 15/16’’ Socket
  • 3/8’’ Ratchet
  • 9/16’’ Socket
  • 3/8’’ Allen Key
  • 5/8’’ Wrench
  • 9/16’’ Wrench
  • 3/8’’ Line Wrench
  • Flathead Screwdriver
  • Channel Lock
  • Cutters
  • Rotary Tool
  • Hammer
  • Rubber Mallet
  • Safety Glasses

Step 1: Raise Vehicle & Remove Wheels

Raise the car off the grate using a lift or mariner and laborer stands and remove the two front wheels .
Mustang drum brake assembly with no wheel or tire

Step 2: Remove Dust Cup from Drum

Before you can start disassembling the brake drum brakes, you must remove the debris cup .
Drum brake dust cup removal

Step 3: Remove Cotter Pin

now that the dust cap is removed, squeeze the cotter pin and remove it so you can unscrew the retain nut .
Hand pulling out the cotter pin on a drum brake

Step 4: Remove Retaining Nut

adjacent, you ’ ll remove the retain nut using channel lock pliers .
Removing the retaining nut on a drum brake

Step 5: Remove Washer & Bearing

To remove the washer and carriage, give the drum a thoroughly tap. They should pop right field on out .
Removing the washer and bearing on a drum brake

Step 6: Remove Brake Drum

With everything out of the way, you can nowadays remove the bracken drum .
Removing the drum brake off a vehicle

Step 7: Disconnect Brake Line

At this item, you ’ re going to disconnect the brake production line. The brake agate line in this 1965 Mustang is most probably original, so we ’ ll replace it with a new brake line. If you still have factory brake lines, you may want to consider upgrade adenine well .
Pro Tip: You may end up damaging the bracken line in the process of removal. In our subject, the brake line was beyond haunt, so we ended up cutting it .
Using pliers to disconnect brake line

Step 8: Remove Retaining Clip

With the brake line disconnected, you can remove the retain clip. You may have to remove some of the prime to remove the clip .
Removing retaining clip from brake line

Step 9: Remove Bolts from Backing Plate

With the line disconnected, the next step is to remove the back plate. It ’ s held on by four bolts that you ’ ll need to remove .
Removing bolts from backing plate

Step 10: Remove Backing Plate & Drum

once you get the bolts off, you can remove the back denture with the cram. You can use a mallet to gently tap on the back if needed .
Removing backing plate and drum from drum brakes

Step 11: Remove Gasket Remnants & Clean the Surface

once the backing plate and drum are off, you can remove any gasket remnants and clean the surface using a synchronous converter tool and rag .
Removing gasket remnants and cleaning surface of drum spindle

Step 12: Install Caliper Mounting Bracket

When you get everything courteous and clean, you can install the caliper mounting bracket. Line the bolts up with the factory holes and tighten them down .
Installing caliper mounting bracket on disc brake assembly

Step 13: Start Assembling Rotor

Remove the metallic element ring from the cachet and place it on the spindle with the sharpen side facing inward .
Metal spring with tapered side inward on drum spindle

Step 14: Properly Grease Bearings

Get a good measure of grease in your hand and influence it through the bear. If you have a bearing backpacker, you can use it here. If not, this is the erstwhile school way of doing it. Make surely you work the dirt in and out of the bearing .
Greasing bearings for disc brakes

Step 15: Set Bearing in Back of Rotor

After the bearing is all greased up, put it in the back of the rotor .
Setting bearing inside back of disc brake rotor

Step 16: Place Seal on Top of Bearing

now that the bearing is in the rotor, place the seal on top of the bear .
Placing seal on top of bearing in disc brake

Step 17: Grease the Spindle

Apply a generous sum of grease to the spindle .
Greasing the brake spindle

Step 18: Place Rotor on Spindle

After greasing the spindle, it ’ second time to put the rotor on .
Placing rotor on brake spindle

Step 19: Grease the Smaller Bearing

now you ’ re going to grease the smaller yield, working it through the same way you did with the larger bearing. Make certain it covers all the rollers by spinning them around in your hand .
Greasing the smaller bearing

Step 20: Place Smaller Bearing on Spindle

After the smaller bearing is greased, home it on the spindle .
Placing greased smalling bearing on drum spindle

Step 21: Install Washer & Retaining Nut

Slide the washer on acme of the smaller bearing and place the retaining nut on top. Tighten the crackpot down .
Installing washer and retaining nut on disc brake assembly

Step 22: Install Cotter Pin

When everything is tightened down, install the cotter pin .
Installing cotter pin in disc brake assembly

Step 23: Install Grease Cap

After the cotter bowling pin is installed, put the dirt cap on. You may need a rubberize mallet to hammer it down .
Installing grease cap on disc brake assembly

Step 24: Grease Caliper Brackets

Before installing the calipers, grease the caliper brackets .
Greasing disc brake caliper brackets

Step 25: Mount Caliper

place the caliper on the grease bracket and tighten .
Placing caliper on greased mounting bracket and tightening

Step 26: Install Banjo Bolt with Brake Line

After the caliper is mounted, you ’ re going to install the bracken line using a banjo bolt. Put one washer on each side of the line and reduce .
Intalling banjo bolt on a brake line in disc brake assembly

Step 27: Connect Brake Line

With everything else done, you can reconnect the brake lineage. Put the hosiery through and connect the cable. Slide the retainer in, then tighten the brake line .
Connecting a brake line

Step 28: Repeat Process on Other Side

once you ’ re done with one side, you can complete the same march on the early side .

Step 29: Bleed Brakes

After installing the movement disk brakes on each side, the last step is to bleed your brakes .

Step 30: Reinstall Wheels & Tires

With your tires and wheels binding on the car, it ’ sulfur time to enjoy your advanced disk bracken setup .
Disc brake assembly complete

Are Disc Brakes Worth the Investment?

Because of their superscript operation, phonograph record brakes are worth the investment and meter it takes to install them. Compared to drum brakes, magnetic disk brakes offer importantly more stop world power, dependability, and performance .
Disc brakes are particularly important if you plan on doing any type of racing. You ’ re going to need a dependable brake system that can stop cursorily and not fade with repeated use. If you ’ re on a limited budget, replacing the front phonograph record brakes will have the most impact.

Alison Author Photo

About the Author

Alison is the author of over 100 articles on CJ ’ s resource center. She ’ sulfur used her inquisitive nature to help millions of readers learn more about their front-runner vehicles. Read wax bio → Sources : Brakes : Drum five Disc, Edmunds | How Drum Brakes Work, How Stuff Works | How Disc Brakes Work, How Stuff Works | How Do Drum Brakes Actually Work ? Car Throttle | Pros and Cons of Drum Brakes, Haynes
This article was researched, written, edited, and reviewed following the steps outlined in our editorial summons. Learn more about CJ ‘s column standards and guidelines .

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