Brake Caliper Noise????

[crios]

Hi all,
My right rear brake caliper is apparently very dirty and is doing something that cause a clunk…cluck….cluck noise which increases with speed. When I engage the clutch or cruise without accelerating, the noise stops.

This first started happening about a year ago. I took it to the dealer ($400 later) and they said the caliper was really dirty, they cleaned it and three months later it was doing the same thing. Since then it has happened on and off, usually goes away on its own, but for the last week it has stayed. I even took the tire off and caliper off and cleaned the outside of it the best I could. The noise went away for a day, but now it’s back.

Has anyone else experienced this? I’m thinking of rebuilding the caliper and cleaning the inside of it. Is this hard to do? What will I need to replace once I take everything apart? What should I use to clean the caliper?

Thanks,
Cesar

[jhandy]

same type of thing happened to me and it turned out to be the caliper bolts. They are one time use only. They have some kind of antiseze threadlock coating and if you dont screw them in tight or use the same bolts, they work thier way loose and the caliper clunks.

Mine was most notiable when, driving a little. stopping. then reverse a little stop and clunk. forward again, stop, and clunk. driving along at speed, on a small bump, then clunk.

Replaced the bolts, tightened to tourqe and has not returned.

Just a thought.

[RandallNeighbour]

Caliper bolts are really one time use only?

Are you sure about that?

My front brakes are clunking a little too. I might pull my wheels on Saturday and have a look at them.

[jhandy]

I am 110% positive that the caliper bolts are one time use only. When I did my brakes the dealer told me to buy new bolts. I did not listen. Then suncoast told me to buy new bolts, I did not listen. Then i had the issue, tightened them a few times only to have them shake loose. Got new bolts, cost of about 20$, looked at them, they are covered with a green coating.
put the new ones in, tightened to specs, and never had another issue.

part number 999.067.041.09

just from an educational standpoint, Google "replace caliper bolts boxster"
and see what comes up.

James

[RandallNeighbour]

How about that!

I gotta check all four corners now. I replaced the front bolts because the stinking things rusted out and totally reamed out my wheel carrier (well, the top one anyway), but I've removed one a second time because the rotor warped.

[crios]

You know, that could be it, the noise goes away when I tighten to spec, 63lbs, for a day or so...intresting. Thanks, I'll order some new ones today...$2.60 each at Suncoast.

http://www.e-partssales.com/miva/merchant.mvc?Screen=PROD&Store_Code=P&Product_Code=99907340201&Category_Code=98625brakes