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Checking Rear Rotor's?

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Old 12-17-2010, 03:15 AM
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Default Checking Rear Rotor's?

I have a slight pulsation in my car the front roto's are almost new, but they are cheap AZ rotor is there a way to check if it from the front or the back. I know the old petal vs steering wheel and to tell you the truth it feel's like both. and advice would be great.
Old 12-17-2010, 03:15 AM
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Oh it a 98 Z28 BTW
Old 12-19-2010, 10:29 PM
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anyone?
Old 12-20-2010, 05:02 PM
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You would need a dial indicator with a flexible base attachment and a micrometer.

You can measure rotor runout with the dial indicator to see if its excessive. Then check if the rotor is out of parallel by using the micrometer to measure it at 12 different spots.

Most people would not have these tools though, so you would probably have to pull the rotors off and have a machine shop check them.
Old 12-21-2010, 09:39 PM
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your pins may be siezed up........check that
Old 12-22-2010, 03:49 AM
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A dial indicator is the correct way. As far as peddle vs wheel. Warped front rotors will cause pulsation in both
But really you need to use a dial indicator. Iirc spec is .004
Old 12-25-2010, 04:07 PM
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Originally Posted by stangtrader
A dial indicator is the correct way. As far as peddle vs wheel. Warped front rotors will cause pulsation in both
But really you need to use a dial indicator. Iirc spec is .004
I wouldn't be satisfied with any more than .002 lateral runout.

As far as parallelism, it shouldn't be any more than .001.



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