FstFD3SPOWER

Brake makes WEIRD.. but Really aloud Sounds..
grrrrrrrrrrrrrrrrrrrr..geeeeeeeeeeerrrrrrrrrrrrrr. ..
Hard to describe.. they works good but when i tape the brake while im driving it makes this sounds and sometime it shakes car!!!

What u guys think the problem is?

mjw

iTrader: (1)

Maybe seized calipers.. is there any smoke when you come to a stop or an awful smell?

Matt
93 SSM

hapa

Did you keep the Mazda rear brake pad shims on? These can cause noise, and need to removed with the Hawk pads.

eric

turbojeff

iTrader: (30)

I've installed 3 sets of Hawk HPS and 2 sets of HP+ and always used the factory shims, etc. I've never had any problems with noise aside from very MINOR squeaking at low speeds with the HP+.

Did you use anti-squeal on the back of the pads? Did you make sure to index the pin on the rear pads with the little groove on the pistons?

Which Hawk pads are you referring to that require removal of shims?

Jeff

FstFD3SPOWER

no smoke or smell... maybe the shims...
Sometime noise is coming from back and sometime from front.. i didn't install it cuz i didn't ahve time.. i took it back to shop and asked guy who installed.. he checked it out and told me he couldn't find the problem..

maxcooper

Look at the back (inside) surface of your front rotors. If you switch the bolts that hold the caliper to the upright (hub carrier), the end of the bolt will hit the rotor. It will make a horrible scraping sound. You could also lift the front tire and see if there is any major friction when turning the wheel. If it has been together a while, you may have worn a deep enough groove in the rotor that it will only rub on turns. If that is the case, you'll need a new rotor.

Another possibility is that the pads and new rotors are so thick that it rubs a little even with the brakes not applied. I had a new set of front Hawk HP pads (they had their own shims on the back) that would not fit with the stock shims installed. This situation would remedy itself after a while, but you should probably not run the stock shims until there is enough room for them.

It might be neither of these things, but they are both possibilities.

-Max

hapa

Jeff- I have hawk HPS pads, I installed them with my factory shims, and it was so tight I took the factory ones out. I don't know if it would have made noise or not, I removed the factory ones before I ran the brakes.

eric

twinturboteddy

Max is exactly right here. There are two bolts that hold on the front caliper. If you put them back on wrong, one bolt will make contact with the rotor when you turn in a certain direction and make a horrible sound (sometimes even going straight).

Check the inside rotor face to see if you have any scratches

martini

interesting. I didn't think there was a difference in bolts (just the washer on the bottom bolt). I gotta check my rotors now.

My brakes make kind of a weird uneven type noise, I always chalked it up to the pits on the rotor. Like they are gasing.

maxcooper

The bolts are exactly the same, but the thickness of the washers are different (or maybe one doesn't have a washer? I can't remember). Anyway, if you swap the bolts, one will hit the inside rotor face.

-Max