Okay, heres the deal, Last weekend I posted a topic about the brake retaining screws, and got wonderful feedback and thank everyone for the help. Well I aquired an impact screwdriver, and removed the siezed screws. I then replaced the rotors with brembo blanks, new remanufactured nissin calipers from ACEI, that comes with the asbestos free brake pads. I then bleed the brake system, and go for a test run down the street to make sure everything feels right, sounds right.

Well the main problem of my passenger front brake noise when the brakes were NOT applied, and then would go away when the brakes WERE applied, was eliviated. But now I got brake noise on my driver side when the car is going no matter if the brakes are being applied or not. It was already getting dark out and couldn't see much. Anyone got any clues to what it can be? The noise escalates as the rotors turn to a certain point, then goes to little less noisy.

 

What does this "noise" sound like?

 

That happened to me a few months ago. I needed a new wheel bearing. If the noise goes away by turning a certain direction, the wheel bearing is shot.

 

Wheel bearing

Easy fix, not cheap though

 

Sorry for the lack of description of the noise. Sounds like metal grinding against metal. Its real light, and its doesnt go away when I turn. Like I said, originally, the passenger front caliper and brakes were making awful noises just driving, but when the brakes were applied, the noise goes away. Since its daylight now, I'll try to get up on a camera and take some pics. The car is a 2000 GS-R with only 82K miles on her. Boosted for about 25K. But its my daily driver, and I don't beat on her at all. My guess is the shim might be touching the rotor giving me the noise. And as far as difficulty doing a wheel bearing, I got a Helms for that if it comes down to it.

 

Did you use a torque wrench on your lugs? Did you make sure that the hub face was corrosion free before installing the new rotors? Both of these details can cause rotor runout and noise.

 

Nah, No torque wrench on my lugs, I used brake cleaner as suggested and soaked the brake disk hub face down. I didn't use a rag to wipe off anything, just let it evap as it said it dissolves the crap. Well I get another chance today at trying to zero out the noise after I get my friend's 240 up and running again (replacing both the rear calipers at the moment ) I did make sure though that the lugs were tight, and rechecked after road testing the brakes. Would you suggest a brush + brake cleaner to remove corrosion?

 

Did you reuse the pad retaining clips? Well used clips tend to have a lot of rust and build-up. They usually need to be filed down/deburred to allow the pad to slide back and forth on them without hanging.

You may also try using a little bit of grease on the ears of the pads to allow them to slide in the retaining clips easier without hanging.

You should also make sure that the caliper pins are well lubed and can move easily & freely in and out of the caliper bracket.

 

Okay, closure for this problem. The caliper was totally remanufactured from ACEI, and came with the caliper mounting bracket, with new shims, and remanufactured caliper. I took the wheel off and rotated the hub and pin-pointed the location of noise. The new shim on the bottom end wasn't bent down far enough and the width edge of the rotor was running against it. I took a pair of vice grips and bent the metal a centimeter or two and problem gone. Thanks for the help everyone.