How To Swap Rear Drum to Disc - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
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post #1 of 11 (permalink) Old 11-28-2010, 03:45 PM Thread Starter
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How To Swap Rear Drum to Disc

5 LUG JL9 Axle Only

Assuming that you have your disc brake rear axle prepped to swap out the axle is pretty simple.

Once you have the car up in the air and have the wheels removed etc, you will want to disengage the emergency brake lines.

The connectors are located underneath the rear cup holders, disengage the cables from the metal bracket from the EM Brake

assembly




Remove the cables slowly out of the tube







Once the emergency brake is removed from inside the car you will then want to remove the drum cover to allow the drum to cool

down so you can work around the brakes. You do not need to disengage the em cable from the drum brakes as you are replacing

the EM cables when you replace the rear axle.



You will then want to disengage the ABS, the connector is located in the center of the axle up near the evaporator. Just

disconnect the cable as it will also go with the axle and be replaced with the ABS cable on the new axle (if you dont have abs

dont worry about this step)



Once the brake cables are removed you will want to then pull the shocks off, it should be 2 bolts.



Once the shock is removed you will want to have either 2 people or a transmission stand or something underneath the axle for

when you release it from the car. Remove the 3 bolts from each bracket and drop the axle with the backets.





Replace with the new axle and attach with the 3 bolts on each bracket. The axle with the backets will hang there and you can

then work on the brakes and everything else.





At this point I would suggest attaching the brake lines, Then the regular or steel braided lines will hook right up



You will find that you will need to refab the steel sections of the brake lines to fit the new axle unless they came with it.



you may need to round out the brakeline bracket on the axle for the steelbraided brake lines to fit if you are using those



Once you have the brake lines in place and the calipers and rotors are on, its time to re attach the em brake cables. Feed the

lines through the tubes to hook up to the em brake assembly and then hook the cable into the clip on the axle and then around

on to the new calipers on the rotors.









Hook the ABS connector back up under the body at this point.

Once this is done, if you are using your old shocks and springs then you will need to compress the springs and re-attach the

shocks as you took them off, sit the springs into the cradle then lower the car on to the springs and it should sit right in.

Put the wheels back on and away you go!

Speed cost money...How fast do you wanna go!

"What can I say? Its a work in progress!"

Last edited by skids09G5; 11-28-2010 at 04:57 PM.
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post #2 of 11 (permalink) Old 11-28-2010, 04:45 PM
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You might want to specify that this is for 5 lug only. I see lots of confusion in this threads future.
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post #3 of 11 (permalink) Old 11-28-2010, 04:58 PM Thread Starter
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Im sure its pretty obvious by the pictures but I put it in there anyways. And Honestly I dont see why doing an axle swap wouldnt work for the 4 lug either..

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post #4 of 11 (permalink) Old 11-28-2010, 05:18 PM
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trust me there are a lot of noobs around here that wouldn't notice. and yes you can swap in that axle with a 4 lug but you'd also have to convert the fronts or you're gonna have a 4 and 5 lug combo. that would be totally retarded.

good write up though.
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post #5 of 11 (permalink) Old 11-28-2010, 05:25 PM Thread Starter
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Quote:
Originally Posted by blazerlow View Post
trust me there are a lot of noobs around here that wouldn't notice. and yes you can swap in that axle with a 4 lug but you'd also have to convert the fronts or you're gonna have a 4 and 5 lug combo. that would be totally retarded.

good write up though.
I actually meant a 4 lug drum to disc...Unless they never made a 4 lug rear disc

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post #6 of 11 (permalink) Old 11-28-2010, 06:24 PM
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nope, they don't have a 4 lug rear disc. You have to go aftermarket for that.
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post #7 of 11 (permalink) Old 11-28-2010, 06:33 PM Thread Starter
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Ohh that just sucks.....

Speed cost money...How fast do you wanna go!

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post #8 of 11 (permalink) Old 11-29-2010, 01:18 AM
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Personally, I perfered the drum better for its stronger ebrake.


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post #9 of 11 (permalink) Old 11-29-2010, 05:26 AM
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So basically it is an axle swap. Straight axle swaps are easy anyway, as long as you know what hardware to remove and keep for future use.



sig pic courtesy of GBALT05
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post #10 of 11 (permalink) Old 05-26-2011, 02:55 PM Thread Starter
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I know this has been up here a while and I thought I would answer this question. It wasnt just an axle swap. I went from 2 wheel disc to 4 wheel disc. I upgraded to the SS Calipers, rotors & Pads, I also upgraded the brake lines to steel. I had t Fab new lines that went between the flex lines.

However the ABS hooked right up no issues.

Speed cost money...How fast do you wanna go!

"What can I say? Its a work in progress!"
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