Brakes Grinding when pedal is pressed.

[ksrogue]

The rotors and pads have just been replaced in the front and rear. I had an issue with one of the bolts on the right rear caliper, and we got another bolt to put into the hole that fit and felt tightened. That bolt is long gone. The two bolts that hold the bracket to the wheel assembly are the bolts I am speaking of... the bottom one is snug, but the top one is missing. I am hoping to either find a new bracket and bolts, or possibly get the bracket either heli coiled or tap a new thread into it at a machine shop. Anyone have any experience with this rear caliper bracket?
I am trying to find a cheaper solution, and preferably something that I can get done quickly since this is my only mode of transportation.

 

[tweety2300]

I had that issue with the front, I just got a new caliper and bracket for $50.

If it was grinding the bolt may have went too far and was rubbing the rotor

 

[ksrogue]

The bolt is GONE... it somehow worked its way out and fell off. Rather than put a replacement bolt in, I am thinking I might just have to replace the caliper bracket. Most of the brackets I have found online say for naturally aspirated only. I am not about to go to mazda and buy one for $100 if I can find one that fits for much cheaper. I am going to try to get some time tomorrow to take the bracket to my favorite local machine shop and see if they can either tap a new thread into it, or heli coil the old bracket. Either way it is next to impossible to track down the proper bracket and bolt online (considering they say the bracket is for NA) and the bolts are the slide bolts for the actual caliper to the bracket. It is a titanium bolt so there aren't many place around here that carry that specific size/thread to match the old one.
The bracket has actually moved a little bit under torque from the brakes, so I can't drive it without fixing it first.

 

[IshSonP5]

Is there a dealership by you? If so they usually have those bolts on hand. Just go and buy one (about $15) and get some loctite for it. If that won't work than please give an update in case anyone else has this issue. Good luck bud.

 

[ksrogue]

There is a Mazda dealership here. They do not have the bracket bolts on hand... and are $4 a piece. Which is fine by me, but they have to be ordered and would take a week to get here. I am not sure a new bolt would do the trick anyway. I replaced the bolt that was in there with a new one (same size, but with a little tighter thread) and in theory and by putting it in there, it stayed and seemed tight. However, it just fell out on the drive to the store earlier. I am parking the MSP in the garage and removing the caliper bracket soon to either fix the stock one, or get a replacement.