Caliper guide bolt bushings?
 

My front upper caliper guide bolt bushings (around the shank of the guide pin) seem to keep getting torn and binding. I'm using high temp ceramic disc brake parts lubricant.


Any of you track folks just tried running without them? The NC Miata guys suspect they are just for noise abatement.

The rubber bits? I used the wrong grease and they swelled, so I trashed them a long time ago. No problems.

I do keep the rubber boots in place to keep crap out of the guides. I just bought a whole new set of pins and boots from Mazdacomp as preventive maintenance.

I don't run shims either. I do still run the anti-clatter clips on either end of the pads.

Yes - I did the same thing and got rid of the bushings too. Mine kept swelling and would fix the caliper at an angle and cause all sorts of weird braking behavior.

Lol...just got rid of the front calipers 😎

Burnt the rubber parts on mine

Thanks for the heads up guys - going to pull them out tonight!


as a side note, the previous owner had the top and bottom pins reversed, with the rubber-sleeved pin on the bottom...

Kinda hard to stop with just the rear calipers. :shocking:

The dust boots on my front calipers burned-off years ago, but they aren't leaking yet. Thousands of track miles on them.

I bought an extra set as a precaution years ago off somebody who went BBK.
It worked since I haven't had to use them yet. :D:

Funny how that spare thing works. ...I bought spare rotor rings for my 2 pc rotors and still haven't worn out the originals. Have spare trannys too and they live forever 😊

Go to the track without them and shit breaks....

If you are running 17" rims, omitting the rubber sleeves can cause enough vibration in the calipers to cause rubbing between the calipers and rims, which creates an alarmingly obnoxious racket. The easy solution is to use a rubber safe grease on the caliper pins, such as Sil-Glyde, and leave the rubber sleeves in place. That is, in fact, what I do after having learned the hard way in trying to use Permatex ceramic grease to no avail.

Man, you are always on-point Steve. I am pretty sure that was exactly what was happening. I already had to shave my calipers a bit for clearance. The rubbing was pretty light, so i'll take another look to see if I have a high spot.