Noise after rear disc conversion.

[Yufflez]

Hi,

I recently did a rear disc brake conversion on my 98 eclipse rs. I used the junk yard rotors and pads for a good month before i just bought new rotors and ebc green stuff brake pads. I changed out all 4 rotors and all brake pads today and now i get this weird noise when i do a u-turn or a sharp right turn.

I modified the hub for the drum e-brake cable. the cables are loose and not properly tighten down but the e-brake and everything else is adjusted correctly. I tried pulling the e-brake and turning right hard, this is when the noise came back after driving straight for a while.

I took off the wheel to look and noticed on the back of the rotor the mounting bolts for the caliper were touching the rotor. I decided to take off a thread in length with a dermal which got rid of the noise till I did the e-brake and force the sound to come back.

My thoughts are that the bearings are going out and causing the wheel to move the rotor at an angle that causes it to touch the metal brackets or bolts for the caliper. What do you guys think? I've checked everything and it seems like nothing else would touch it besides the bolts which i shortened so I don't know what's causing the sound now.

I thought it might be the e-brake shoes since the cable is loose when you're not pulling the e-brake. The e-brake is hard after 4-5 clicks so it's adjusted properly. Should i just take everything off again and rebuild it from scratch? this noise is bugging me and worrying me.

I don't think the caliper is sticking by the way. it's giving a metal to metal screech by the way.

 

[mko]

Did you use your stock e-brake cables or the ones off the donor car?

Your issues come from the loose e=brake cables.

Here's the correct tutorial, pay attention of how the backing plate is modified to accept the drum e-brake cables. There's also clip that holds the cables in place and it slides on the backing plate. Without that clip, the cables will always be loose and the shoes will not return to previous position and rub inside the rotor

 

[gst96spyderman]

Generally when doing a brake job, the pads will rub on rotor for first 20-50 miles. Thats if pads are brand new. Also will give the "metal on metal screech" Or it may not be. Not to the point where I'd start a thread about it. So rotors could be flexing a little while under stress "during u-turn or sharp right turn.) If this is the case, you will need to readjust the hub spacing.

If this dosen't work. Jack up rear end so that you can rotate driver and passenger and physically see what and where issue is from. (MAKE SURE YOU USE SAFTEY JACKS AND CAULK FRONT TIRES!!)

Good luck and let us know how it goes

 

[Yufflez]

Ill probably check tomorrow since im changing my friend's fuel pump today.

Yea im using the stock drum e-brakes cables, my professor said its mostly probably the emergency brakes causing the problem and to bring it to the school on monday to fix the problem.

I didnt get to clamp down the e-brake cable because it wouldn't let me so they are loose im thinking about using a vice grip to squeeze the metal down on the e brake cable

 

[noV8undrDIShood]

check the anti rattle clips also.. they could be pushed over to the point where they are making contact with the rotors.. check the surfaces of the rotors to see if they are any lines gaulged into them.. depending on the severity, it might be very minimal or it may be deep.

 

[Yufflez]

So I checked them multiple times. The caliper screws were larger then the originals I think so I'm guessing they were replaced on the junk yard car. Everything is new, rotors, brake pads, floaters (anti rattle clips) and everything else but the caliper hub and calipers. I realized there are a few points the rotor grinds upon. The hub assembly has scrapes in it where the rotor should not touch. The noise is minimal now and rarely comes on, i have to really do a sharp right turn to make the sound come back but since I put my sound system back in, i don't drive fast around corners anymore so it doesn't bother me.

I just think it's a rotor touching the hub problem while turning that causes the noise. The major noise was because the bolts were touching the rotor, but after cutting them down to size, the sound only comes when doing the sharp turns which is probably due to the rotors flexing and touching the hub assembly. that's my guess so far. I'll probably look at them again over time, but for now i'm satisfied that the sound is gone majority of the time.

 

[psx]

is it a dragging noise
i dont remember if that was a problem when i did it
i just raped the brakes for a lil bit after a the install
try that