Brake Squeel
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Brake Squeel
After my last weekend at the track, I started getting some LOUD squeeling from my brakes, although the track was not particularly hard on the brakes. The squeel begins after about a mile of driving and only under light braking; if I braking hard or moderately hard, they are quiet. When I brake into my garage, the noise hurts my ears.
I pulled off all four wheels and checked the R4-S pads...they looked fine. I re-lubed the shims and this brought the loudness down a bit, but you can still hear me braking from a 1/4 mile away.
Does anyone have an idea of what is causing the noise?
Secondly, at what material thickness do I change the Porterfields?
Thanks,
Tanq
I pulled off all four wheels and checked the R4-S pads...they looked fine. I re-lubed the shims and this brought the loudness down a bit, but you can still hear me braking from a 1/4 mile away.
Does anyone have an idea of what is causing the noise?
Secondly, at what material thickness do I change the Porterfields?
Thanks,
Tanq
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You've just described brake squeal perfectly. I'd suggest you try a different brand of anti-squeal compound (I use CRC Disc Brake Quiet spray) and apply it to the back of the shim (where it contacts the caliper/piston) as well as the pad side of the shim.
Sometimes performance brakes just make noise but I've been able to quiet the R4-Ss on my car.
Replace em before the brake material is all gone. They are not rivited so you don't have to worry about that. I'm guessing the official spec is something like 1/16-1/8" of pad material but don't quote me.
Sometimes performance brakes just make noise but I've been able to quiet the R4-Ss on my car.
Replace em before the brake material is all gone. They are not rivited so you don't have to worry about that. I'm guessing the official spec is something like 1/16-1/8" of pad material but don't quote me.
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Jschmidt,
My R4-S pads squealed some after my first 3-day track event, but I fixed it pretty easily with more lube. After my last weekend at the track, it has been unbearable...my wife won't ride in the car because she is embarrassed.
I will try CRC and try applying the stuff to the places you suggested. I normally only apply it between the shim and pad backing plate.
Thanks,
Tanq
My R4-S pads squealed some after my first 3-day track event, but I fixed it pretty easily with more lube. After my last weekend at the track, it has been unbearable...my wife won't ride in the car because she is embarrassed.
I will try CRC and try applying the stuff to the places you suggested. I normally only apply it between the shim and pad backing plate.
Thanks,
Tanq
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I went home at lunch and realized that I had some extra time, so I tried using anti-seize, as recommended in a couple of previous threads. I put it all over the place...both sides of the shim, on the pad backing, a bit on the caliper where it hits the shim.
I drove to work, and....they still squeal! Not loud enough to burst eardrums, but still enough to hear at a few hundred yards.
A question: my R4-S pads have seen 5 track days. 3 of those days were very hard on the brakes. Is it possible that the pads get more squeal after hard use? If I cooked the pads, would that cause this racket?
Thanks,
Tanq
I drove to work, and....they still squeal! Not loud enough to burst eardrums, but still enough to hear at a few hundred yards.
A question: my R4-S pads have seen 5 track days. 3 of those days were very hard on the brakes. Is it possible that the pads get more squeal after hard use? If I cooked the pads, would that cause this racket?
Thanks,
Tanq
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Originally posted by Tanqueray
If I cooked the pads, would that cause this racket?
If I cooked the pads, would that cause this racket?
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Most any high performance pad will squeal at times . Material of pad is harder than stock ,noise comes from pad moving in caliper as pad bites rotor than releases quickly . Softer pads eliminate noise , but also reduces pad effectiveness . Honda balances pad noise against performance . If you go to Honda with pad noise problem they install softer pads than normal , if you have pad longevity problems they give you pads that are harder than normal . This is very simplistic answer , but hardness and material that pad is made out of is what produces noise . A good set of bedded pads to the rotor will have very smooth finish on rotor , as rotor becomes smoother noise usually increases but so does braking performance.
brad
brad
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You need to lube the interface of the pad and the piston with a "perfomance lube" available at any auto-part store. Be very careful not to get any of the powder on the friction area of the pad!
Utah
Utah
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I had my R4-S's for a long time before they just recently started squealing exactly as Tanq described. Personally, it's not that big of a deal to me though. I'm just surprised it took them so long to start making noise!
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Steve,
That's what I suspect: once the pad have been used hard and long, the squeal gets very bad. If I have time this week, I am going to switch to a new set of Porterfields and see what happens. I can't believe that all of that lube I have put on in the last few days hasn't fixed the problem.
Tanq
That's what I suspect: once the pad have been used hard and long, the squeal gets very bad. If I have time this week, I am going to switch to a new set of Porterfields and see what happens. I can't believe that all of that lube I have put on in the last few days hasn't fixed the problem.
Tanq
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I think I fixed the squeal, finally: I pulled the wheels and put on a second coat of anti-sieze everywhere. All I have heard since is the usual noise from the R4-S pads.
I still don't understand why putting anti-sieze on the on the piston/caliper sides of the pad and shim was needed...it didn't come that way from the factory. Does that imply that I need new shims?
Tanq
I still don't understand why putting anti-sieze on the on the piston/caliper sides of the pad and shim was needed...it didn't come that way from the factory. Does that imply that I need new shims?
Tanq