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Topic: Brake vibrations
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Becca
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Member # 7004
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posted
I was driving on hwy 9 on Saturday in my '91 GT and the car brakes fine at all times, but when I would start to push the car and brake harder before the turns, once the brakes got hot (after hard braking for awhile) the brakes would vibrate/pulse the entire length of pedal travel. The car would still slow down as normal though. I would back off and slow down and give the brakes a breather and then everything would go back to normal. It seems to only do that when I'm on the brakes repeatedly for a while.
I autocross the car regularly and never noticed a problem with the brakes, but then again each lap is only about a minute long. I usually don't ever drive her on the street.
Any thoughts/suggestions?
My first thought was warped rotors, but the vibrations aren't always there.
-------------------- Happiness isn't around the corner, happiness IS the corner!
'00 Silverado 1500 LT '91 Mustang GT
Posts: 111 | From: San Jose, CA | Registered: Aug 2006
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Blind
2.3L CAFords OG
Member # 3052
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posted
that's material from the pads getting so hot they are getting left on the rotors, I had that happen a lot to my stock brakes, especially in the front after I put the 73mm calipers on.
here's how my rotors looked before I put the new brakes on btw, notice the heat spots left from the pad material.
-------------------- 89 LX Notchback ex 4cyl, 14psi 02 Harley F150, 15psi
Posts: 8521 | From: Fairfield | Registered: Jul 2003
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Becca
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Member # 7004
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posted
I'll take a look at them tonight and see if I notice anything.
The pads are HP Plus.
-------------------- Happiness isn't around the corner, happiness IS the corner!
'00 Silverado 1500 LT '91 Mustang GT
Posts: 111 | From: San Jose, CA | Registered: Aug 2006
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Blind
2.3L CAFords OG
Member # 3052
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posted
quote: Originally posted by Becca: I'll take a look at them tonight and see if I notice anything.
The pads are HP Plus.
same pads that I had on my car, work great until they get really hot, then the small rotor size just can't cool the brakes off enough.
-------------------- 89 LX Notchback ex 4cyl, 14psi 02 Harley F150, 15psi
Posts: 8521 | From: Fairfield | Registered: Jul 2003
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Jdub07
( O Y O )
Member # 2728
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posted
are the pads metalic or ceramic? Go with semi metalic pads
Posts: 7282 | Registered: Apr 2003
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Becca
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Member # 7004
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posted
HP Plus pads are Ferro-Carbon
Rotors are not warped, no sign of pad residue being left on the rotors
-------------------- Happiness isn't around the corner, happiness IS the corner!
'00 Silverado 1500 LT '91 Mustang GT
Posts: 111 | From: San Jose, CA | Registered: Aug 2006
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Jdub07
( O Y O )
Member # 2728
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posted
quote: Originally posted by Becca: HP Plus pads are Ferro-Carbon
Rotors are not warped, no sign of pad residue being left on the rotors
From the mouth of GOLD MEMBER/FINGER can't remember "Ishint dat veird" [ July 24, 2007, 12:52 PM: Message edited by: Jdub07 ]
Posts: 7282 | Registered: Apr 2003
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Blind
2.3L CAFords OG
Member # 3052
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posted
quote: Originally posted by Becca: HP Plus pads are Ferro-Carbon
Rotors are not warped, no sign of pad residue being left on the rotors
well you wont see the residue unless you felt the pulsating right before you pulled the wheels off, mine would clean themselves off and the pulsating wouldn't come back until I heated them up again. [ July 24, 2007, 08:27 PM: Message edited by: Blind ]
-------------------- 89 LX Notchback ex 4cyl, 14psi 02 Harley F150, 15psi
Posts: 8521 | From: Fairfield | Registered: Jul 2003
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