Not sure what the issue is. Sounds like a dust shield scraping when I make a hard left turn but I don't see signs of rubbing. Did have that issue after I did my brakes but pulled the shield back off the brake and didn't have issues for a while. Bearings feel ok when I push on 12 and 6 as well as 3 and 9 but maybe I'm just not pushing hard enough. They certainly aren't as bad as my front bearings were before I replaced those if it is a bearing issue. It seems to be an issue that arises when that wheel gets loaded and compresses only. Control arm pushing on the dust shield maybe? Anybody have experience with something like this? If I need parts, I'd like to order them soon so the car might be race ready for this weekend.

Thanks!

Just had the same thing on miy 87GT. The bearings felt fine when pushing and pulling on the tire. I decided to go ahead and pull the bearing for inspection and found that it was split in 2 pieces with only the axle nut holding it on.

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And thats funny I had the same wxact problem on my 86gt. For me it was that the pads wore down on the front of the pads faster than the back. Replaced the pads and sound went away!

Mmk, I'll plan on ordering some rear hubs just to be safe then. Order a set of Timkens from Autozone, use the $100 in gift cards I have and get another $25 back for my trouble.

I'll check the pads too. My buddy mentioned that they might not have seated properly. Luckily I have a spare set of rear pads... they're prolly also better quality than the ones I have.

Brake pads nearing the end of their service life and dust shields can scrub on turns. The hub/rotor flexes slightly under the stress of turning and can contact pads or shields that otherwise wouldn't scrape.

Not sure what you mean by "did my brakes". If you replaced just the pads, then rotors nearing the end of their life can also make that noise, especially if the outer ridge of the rotor has expanded due to rust. When loaded under a turn, the bearing flexes slightly tipping the rotor along with it. If there are bare minimum clearances between the ridge on theouter diameter of the rotor and the caliper, you'll get a scraping noise.

I had the rear wheel baring be bad with noise on hard turns.

Could be as simple as the dust shield rubbing the rotor. Have had that happen a few times on mine, just bend it back and you're good for a while.

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1986 SE Aero coupe.

3.4 DOHC swap is complete and running, now just have to finish the rest of the car...

quote Originally posted by tesmith66: Could be as simple as the dust shield rubbing the rotor. Have had that happen a few times on mine, just bend it back and you're good for a while.

Maybe.

If replace rotor then can be rotors is made without chamfering and hitting the dust shield inside where the rotors hat section starts. You can tell fast when you remove the rotor because marks on the shield...

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quote Originally posted by Bloozberry: Not sure what you mean by "did my brakes". If you replaced just the pads, then rotors nearing the end of their life can also make that noise, especially if the outer ridge of the rotor has expanded due to rust. When loaded under a turn, the bearing flexes slightly tipping the rotor along with it. If there are bare minimum clearances between the ridge on theouter diameter of the rotor and the caliper, you'll get a scraping noise.

I replaced a bad caliper on that wheel a little while back and had to replace the rotors and pads at the same time because the bad caliper ruined my rotor and bent the inner pad. Cylinder wasn't releasing properly and it just kept building pressure. I have new hubs on the way and will check my brake components once those get here. It's entirely possible the chamfering could be off, but then I would expect it to rub on both sides since they are matching rotors but I suppose poor quality control and/or tolerances could lead to only one rotor rubbing.

Don't think it's just a matter of pulling the shield away though as I've pulled it about as far as I can. Only spot I can't pull away very far is the section that passes between the control arm and the wheel (between the legs on the A).

Also wouldn't think it would be the pads or rotors nearing the end of their service life. Both are fairly new and don't have a lot of miles on them. Rust also shouldn't be an issue since these rotors have a nickel plating to protect them from corrosion and as far as I can see, it has not been scratched away anywhere.

I might pull the wheel off later and give it a closer look once I finish some of my other work... darn college taking away all my free time...

Ok, finally got a very good look at the rotors and it looks like I am scraping on the inboard side at the outer edge of the rotor. Confirmed it by marking the edge with a bit of paint and checking the results after a hard turn. I will likely still go through with replacing the hubs since the parts will be in tomorrow, but I may attempt to get my mini video camera on it and actually try to see what its doing. Update after this attempt or after hubs are replaced, whichever comes first... and depending on how successful the video recording is.

ok, update. it is my dust shield. the section that runs straight down is deflecting into the rotor. It looks like it would be an interference issue with the control arm when the wheel loads up. I have a very blurry video but will need to get back to my computer to upload it. what could cause this to happen?

A bent dust shield is likely. An iffy/loose hub too. (Loose = axle nut too loose)

Rear Hub is a ball bearing setup, does not use preload, and some play is normal operation. (front is same way but use taper bearings.)

need new axle nut each time... See my Cave, Axle

Found the source of the issue. Dust shield had a small dent in it at the edge. Could't see it until I took it off to replace the hub. Still replaced the hub just to be safe. Now turns quietly again and once I finish my trans swap, it will be ready for autox.

Thanks for the help!