Rear disc conversion?

speedracer · Post by **speedracer** » Tue Dec 06, 2005 8:30 pm

Anyone ever done one of these, if so how involved was it (and expensive)? Paul.

refect · Post by **refect** » Tue Dec 06, 2005 8:42 pm

are you looking to do a full big brake upgrade with front and rear? or jsut liek get some r/t or srt4 rear brakes and put um on?

edit: if you are looking to do the full big brake upgrade with front and rear then that gets expensive. i think even sometimes you might have to get a hold of some srt or r/t rear brakes first to do the full big brake upgrade. somewhere around a grand for the kits though i believe. if you are just hooking up an r/t or srt4 rear brake system then those should bolt up wihtout a problem. pretty much direct replacement i believe as long as you have all the brake parts with the assembly. rotor, caliper, ebrake line, and all that other random stuff attached together. you can usualy find those setups farely cheap floating around forums and ebay and stuff...

Baal · Post by **Baal** » Wed Dec 07, 2005 12:10 am

I think he only means the rear disk convertion, its very cheap finding a "donor" car.

You will need the knukles, disks, calipers and hand brake cable.

Ive been trying to find a trashed neon in junkyards but with no succes

PS: Remember the rear disk/drum brake system have different cylinder diameter (i read about it in the other org, probably only a 1st gen thing), so if you use your car for road racing or really push it to the limits you might want to get a brake balance valve.

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Oh and now that we are talking about breaks, ill hijack a lil this thread, what do you think about this.

Since ill buy a big breke kit soon, and fabricate my own caliper adapter, do you think its possible to swap the front caliper/rotor to the rear with an adapter for the mounting points of the caliper?

The real question is how really the rear limits braking, since it only makes 20% of the braking force, do the stock rear disks are beefy enough to match a big brake kit on the front with a regulating valve?

lambostealth · Post by **lambostealth** » Wed Dec 07, 2005 1:03 am

you do not need the knuckles, just the hubs, and backing plates.......and the calipers, rotors and lines of course, oh yeah and the ebrake cables..........

at least on the 03-05's, the knuckles for drums and discs are IDENTICAL, I did the SRT-4 swap on mine, and the guy that sold them to me failed to mention that the passenger side smacked a curb VERY hard, enough to bend the spindle, I just swapped the backing plates and hubs onto my drum knuckle/spindle.....no modification at all.

Baal · Post by **Baal** » Wed Dec 07, 2005 1:56 am

lambostealth wrote:you do not need the knuckles, just the hubs, and backing plates.......and the calipers, rotors and lines of course, oh yeah and the ebrake cables..........

at least on the 03-05's, the knuckles for drums and discs are IDENTICAL, I did the SRT-4 swap on mine, and the guy that sold them to me failed to mention that the passenger side smacked a curb VERY hard, enough to bend the spindle, I just swapped the backing plates and hubs onto my drum knuckle/spindle.....no modification at all.

wtf but what about the mounting point of the caliper, in the fronts its in the knuckle-caliper, how would you mount it to a drum knukle if it doesnt have the "holes" to bolt it?

lambostealth · Post by **lambostealth** » Wed Dec 07, 2005 2:00 am

sorry, great question, there is a peice between the backing plate and knuckle, it bolts to the knuckle........sorry.

Baal · Post by **Baal** » Wed Dec 07, 2005 2:04 am

lambostealth wrote:sorry, great question, there is a peice between the backing plate and knuckle, it bolts to the knuckle........sorry.

pics ???, ive never seen upcloase a rear disk set up.

lambostealth · Post by **lambostealth** » Wed Dec 07, 2005 2:12 am

will try to get some in a couple days

Baal · Post by **Baal** » Wed Dec 07, 2005 3:44 am

refect · Post by **refect** » Wed Dec 07, 2005 9:03 am

i got a set of rear srt brakes just laying around. it is the full assembly still put together. attached to strut and all. ill get some up close pics later on today when i get home from work for ya.

speedracer · Post by **speedracer** » Wed Dec 07, 2005 9:42 am

I'm definately just lookin' to switch to the rear rt or srt4 dics. I've been trying to beef up my braking and suspension, I think that'll make for a much more fun ride. Paul.

sirvaliant_98 · Post by **sirvaliant_98** » Wed Dec 07, 2005 11:59 am

the swap is really easy. dont make it harder on yourself by piecing it together like lambostealth is talking about. Just get the complete rear disc setup off an r/t,acr, or srt-4 and it will bolt up without any modifications at all. By complete setup I mean the complete knuckle with all the goodies attached. If you get it from a junkyard just unbolt them from the strut and trailing arms and tension rod and dont forget the e-brake cable. I had an srt-4 rear setup on my 2000, took me like an hour and a half to do the complete change over. and no you do not need the brake proportioning valve mentioned above even if you push your car hard. I raced hard with my setup and no valve and never had a problem.

lambostealth · Post by **lambostealth** » Wed Dec 07, 2005 3:11 pm

^^^^^^^^^^^agree completely........I did it because I had to, but it is an extremely fast swap, and doesnt take much skill, I don't drive my car hard, but I know that it does the job QUITE well without the proportioning valve from the SRT.

and not lazy, just very sick, besides it is very hard to see the two seperate peices without taking apart the assembly, in fact I thought I was screwed because the caliper bracket is machined out of the spindle, so it looks like one peice, so I don't feel like taking the thing apart just to show you that im right, just believe that the spindle was bent, and that I now have SRT rear brakes on my car, cost me $200 and two hours of work, wouldve been less had the spindle not been bent.

Baal · Post by **Baal** » Wed Dec 07, 2005 6:00 pm

lambostealth wrote:^^^^^^^^^^^agree completely........I did it because I had to, but it is an extremely fast swap, and doesnt take much skill, I don't drive my car hard, but I know that it does the job QUITE well without the proportioning valve from the SRT.

and not lazy, just very sick, besides it is very hard to see the two seperate peices without taking apart the assembly, in fact I thought I was screwed because the caliper bracket is machined out of the spindle, so it looks like one peice, so I don't feel like taking the thing apart just to show you that im right, just believe that the spindle was bent, and that I now have SRT rear brakes on my car, cost me $200 and two hours of work, wouldve been less had the spindle not been bent.

Agreed the valve is totally unnecesary unless the car is a dedicated race car that is pushed to the limits

dinetuner · Post by **dinetuner** » Wed Dec 07, 2005 6:29 pm

Baal wrote:
lambostealth wrote:^^^^^^^^^^^agree completely........I did it because I had to, but it is an extremely fast swap, and doesnt take much skill, I don't drive my car hard, but I know that it does the job QUITE well without the proportioning valve from the SRT.

and not lazy, just very sick, besides it is very hard to see the two seperate peices without taking apart the assembly, in fact I thought I was screwed because the caliper bracket is machined out of the spindle, so it looks like one peice, so I don't feel like taking the thing apart just to show you that im right, just believe that the spindle was bent, and that I now have SRT rear brakes on my car, cost me $200 and two hours of work, wouldve been less had the spindle not been bent.
Agreed the valve is totally unnecesary unless the car is a dedicated race car that is pushed to the limits

which yours is not

Baal · Post by **Baal** » Wed Dec 07, 2005 8:06 pm

dinetuner wrote:
Baal wrote:
lambostealth wrote:^^^^^^^^^^^agree completely........I did it because I had to, but it is an extremely fast swap, and doesnt take much skill, I don't drive my car hard, but I know that it does the job QUITE well without the proportioning valve from the SRT.

and not lazy, just very sick, besides it is very hard to see the two seperate peices without taking apart the assembly, in fact I thought I was screwed because the caliper bracket is machined out of the spindle, so it looks like one peice, so I don't feel like taking the thing apart just to show you that im right, just believe that the spindle was bent, and that I now have SRT rear brakes on my car, cost me $200 and two hours of work, wouldve been less had the spindle not been bent.
Agreed the valve is totally unnecesary unless the car is a dedicated race car that is pushed to the limits
which yours is not

shut up

I could really push it to my limits but i cant afford to risk so much the cars integrity, if i destroy the neon bye bye chances to go pro so i have to drive in a safe range, still a pretty fast one when i partically loose control of the car atleast once per race.