Rubbing With New Rotor/Pads

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Old Dec 19, 2012 | 04:53 AM
  #1  
BIGef's Avatar
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Default Rubbing With New Rotor/Pads

89 Civic Dx sedan w/ stock hub
New ss brake line
New rotor and pads
Rebuilt calipers
Pins Greased up

Installed everything bled the brakes. Took it for a test drive when i start moving
i can hear excessive rubbing. Like the pads are rubbing on the rotors.
Stopped jacked up the car spin the front wheels and it spins freely
BUT!!!!!! When im spinning the wheels i can hear the rubbing it makes the rubbing noise only at this certain spot. Like the rotors are warped or something.
These rotors are even new and pads also.

Am i suppose to break down for these brakes? or these parts are warped?

Any help appreciated
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Old Dec 19, 2012 | 05:26 AM
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From: Pasadena, California
Default Re: Rubbing With New Rotor/Pads

Both sides or just one? Could be warped rotor or even the dust shield could have been bent a little. I had a bent shield that made noise. I just removed it.
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Old Dec 20, 2012 | 06:39 AM
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Default Re: Rubbing With New Rotor/Pads

both sides do it. Dust shield wasnt the prob.
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Old Dec 20, 2012 | 07:11 AM
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4drEF's Avatar
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From: Granada Hills, Ca, USA
Default Re: Rubbing With New Rotor/Pads

Did you buy cheapo rotors?
Did you clean the brake surface of the rotor off before install?

Pads on disc brakes ride on the surface of the rotor always - unlike drums that have springs to pull the shoes away from the drum.
Hearing a little friction is expected.... very very little.

Excessive noise at specific degrees of rotation is probably a rotor issue.
If the manufacture quality of the rotor is bad then it could be acting like a warped rotor.
If you didn't clean the rust protective film off the rotor before driving, it can be creating a hot spot on your rotor leading to warping.
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Old Dec 20, 2012 | 06:12 PM
  #5  
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Default Re: Rubbing With New Rotor/Pads

Bought brake lab rotors pretty cheap.
Yes cleaned them out with brake cleaner and wiped them down
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Old Dec 20, 2012 | 07:15 PM
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Default Re: Rubbing With New Rotor/Pads

i still put money on the dust shields.
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Old Dec 22, 2012 | 06:34 PM
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Default Re: Rubbing With New Rotor/Pads

^^^^^^usually the dust sheilds it may not look like it but usually is.
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Old Dec 23, 2012 | 08:06 AM
  #8  
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Default Re: Rubbing With New Rotor/Pads

Anyway i can bleed the master cylinder on the car.
Forgot about the MC while i was bleeding my brakes
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Old Dec 23, 2012 | 02:57 PM
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Default

Check to see if the screws that held the original rotors in place, broke off. And if its sticking up any just make sure it is aligned with the hole it supposed to go into through the rotor


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