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Brake Squeal-Hawk HPS pads

Posted: Wed Jun 11, 2008 8:30 pm
by Subaru_Nation555
Recently I have been getting a lot of squeal from the front drivers side brake (maybe the passenger side too). Here's the deal:

My setup:
-'02 WRX calipers
-Hawk HPS pads
-Brembo OEM rotors
-Properly installed/bedded in roughly 5,000-8,000 miles ago


What I have tried so far:

-Disassembled/cleaned the rotors/calipers
-Applied some anti-squeal paste on the back of the pads
-Lightly sanded the rotors
-Re-bedded the pads in (doing so exactly to Hawks specifications is very dangerous/hard as I live in a very urban area and cannot just go tearing around at 60 mph).
-Pads looks evenly worn
-Made sure everything was nice and tight
-Sanded off some rust on the contact point of the hub and the wheel for a more flush fit



I am going to try the following when the car cools:

-Removing the metal backing to the pads
-Apply more anti-squeal paste
-Re-greasing the guide pins (i have grease good up to 380 degrees-is this enough?)
-Re-bedding in the pads


Any other thoughts or suggestions are appreciated. Thanks.

Posted: Wed Jun 11, 2008 11:35 pm
by SubaruNation
do a couple of 80-0 stops?

i don't know if your pads a re new or not, but mine still make a little noise.

are your rotors warped?

do you have any built up rust on the rotors that might affect the alignment?

Posted: Thu Jun 12, 2008 1:46 am
by Subaru_Nation555
Nah, rotors are ok I think. There is some rust which seems to be away from the braking surface but worth checking out. I just finished tightening/lubing/cleaning everything and so far no unpleasant noise. Knock on wood though.

Posted: Thu Jun 12, 2008 3:16 am
by entirelyturbo
They're performance pads. They're going to squeal a bit.

I have HPS pads on my Legacy, and before very long, they were lightly squealing too.

Unless they're squealing to the point of being deafening or squealing when you're not on the brakes... basically, get used to it.

Posted: Thu Jun 12, 2008 1:54 pm
by Subaru_Nation555
I get they're not the quietest pads but the squeaking was not normal, especially since this is my second set and I know what they sound like normally. But the grease and anti-squeal compound seem to have helped the noise. Thanks for the comments guys.