brakes warpred already???
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From: San Clemente
brakes warpred already???
hey guys. My brand new EVO IX seems to already be having brake probs. I only have 1700 miles on the thing! its weird because it doesnt always squeak when i hit the brakes but sometimes it does it really bAD! but newayz i was wondering if i shud take it to the dealer? or have any of you guys dealt with brake issues on an EVO IX? and howd u go about takin care of it......btw i didnt brake hard when the car was new so i dont know why dis is happening......any info appreciated...sorry for the long thread
No, your rotors aren't warped. Rotors don't "warp." What most people conceive as warped rotors is really uneven pad material deposits on the rotors. Do you feel any vibrations when braking, particularly from higher speeds?
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From: San Clemente
Originally Posted by porque
No, your rotors aren't warped. Rotors don't "warp." What most people conceive as warped rotors is really uneven pad material deposits on the rotors. Do you feel any vibrations when braking, particularly from higher speeds?
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From: SW VA.
To the guy who said " Rotors don't "warp." "
Do you know this for sure? I was under the impression that extreme heating and uneven cooling can cause a misshapen rotor (not enough to tell visually, but enough to feel through the break pedal when stopping at higher speeds)
Squeaking at some speeds is fairly normal with the style break pads the evo comes with.
Do you know this for sure? I was under the impression that extreme heating and uneven cooling can cause a misshapen rotor (not enough to tell visually, but enough to feel through the break pedal when stopping at higher speeds)
Squeaking at some speeds is fairly normal with the style break pads the evo comes with.
Last edited by paradoxx; Jul 26, 2006 at 08:24 PM.
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From: Spec-Ops Motorsports, Fayetteville, NC
a lot of it is brake dust build up... clean them and see what happens. i took my 03 to the dealer when this happened, they took the rotors off, shaved them a bit and cleaned the calipers/rotors and i never had any problems after that.... also you can take your pads out and get the anti squeak grease that you spread on the shims and that helps
Originally Posted by paradoxx
To the guy who said " Rotors don't "warp." "
Do you know this for sure? I was under the impression that extreme heating and uneven cooling can cause a misshapen rotor (not enough to tell visually, but enough to feel through the break pedal when stopping at higher speeds)
Squeaking at some speeds is fairly normal with the style break pads the evo comes with.
Do you know this for sure? I was under the impression that extreme heating and uneven cooling can cause a misshapen rotor (not enough to tell visually, but enough to feel through the break pedal when stopping at higher speeds)
Squeaking at some speeds is fairly normal with the style break pads the evo comes with.
Originally Posted by paradoxx
To the guy who said " Rotors don't "warp." "
Do you know this for sure? I was under the impression that extreme heating and uneven cooling can cause a misshapen rotor (not enough to tell visually, but enough to feel through the break pedal when stopping at higher speeds)
Squeaking at some speeds is fairly normal with the style break pads the evo comes with.
Do you know this for sure? I was under the impression that extreme heating and uneven cooling can cause a misshapen rotor (not enough to tell visually, but enough to feel through the break pedal when stopping at higher speeds)
Squeaking at some speeds is fairly normal with the style break pads the evo comes with.
We don't warp them, but yes, we get uneven pad deposits. If you were to track a car, get it up to temp, then stop and leave your foot on the brake, theres a possibility of the pad FUSING to the rotor, and thats never a good thing, but for normal driving, it's just extra pad.
You probably never got them hot enough to bed in, so they're squeakin.
search the suspension and brake section (which this thread should have been in) for my screen name and for brake squeel. there you will find answers to your questions and ways to solve this problem.
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From: Bangkok
Some pads squeal and some don't. The stock will probably do a bit, but it's likely to be more to do with dust and other crap. If you really can't take the squealing, pop the pads out and apply some anti-squeal to the back and a little to the sides. Do use the correct stuff for this, normal grease on brake pads = dead evo.
The 'warped rotor' thing is a myth. As many said, it's material transfer - most of which I think is carbon. Warping in the general sense would imply that the rotor has some how gone 'out of plane' either by coning or looking like a sort of wave spring. Neither can be caused by the caliper. If you look at the caliper brackets, it's very flimsy compared to the rotor. Before the rotor even thinks about deforming, the bracket will be long gone. Plus, the two pads push on the rotor at exactly the same force.
The science of it I think is like the carbon goes into solution in the iron and changes the microstructure as it goes through a heat cycle, causing internal stress in the material itself and some slight and minute deformations in the piece itself. If you actually grind the rotor, you will find uneveness on the surface, but that's not from warping but this surface deformation.
If you don't believe the transfer theory, just get your brakes real hot then come to a complete stop and keep pressure on the brakes for a while. You'll get a brakpad shaped blue-ish black mark on your rotor.
The 'warped rotor' thing is a myth. As many said, it's material transfer - most of which I think is carbon. Warping in the general sense would imply that the rotor has some how gone 'out of plane' either by coning or looking like a sort of wave spring. Neither can be caused by the caliper. If you look at the caliper brackets, it's very flimsy compared to the rotor. Before the rotor even thinks about deforming, the bracket will be long gone. Plus, the two pads push on the rotor at exactly the same force.
The science of it I think is like the carbon goes into solution in the iron and changes the microstructure as it goes through a heat cycle, causing internal stress in the material itself and some slight and minute deformations in the piece itself. If you actually grind the rotor, you will find uneveness on the surface, but that's not from warping but this surface deformation.
If you don't believe the transfer theory, just get your brakes real hot then come to a complete stop and keep pressure on the brakes for a while. You'll get a brakpad shaped blue-ish black mark on your rotor.
