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Go Back   Hummer Forums by Elcova > Hummer H3 Discussion Forums > General H3 Discussion

 
 
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Old 09-15-2006, 10:50 AM
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Default Re: Ran into another H3 with my problem yesterday ...

Quote:
Originally Posted by Michael1
I don't know why you say that. Corvettes have had warped rotor problems for years, and that car has huge rotors, and 3/5 the mass of the H3 to stop. Mine warped in one good hard stop on the freeway at 100F. It's probably a GM design or material problem, rather than just the size.

Michael

I'm sorry to say, but an actual warped rotor was not that common. As I said, the biggest problem with what people call warped rotors is actually pad material causing a high spot.
During our studies, the only rotors that had warping problems were the smaller thin, rotors used on small cars, and then the numbers were not that high.
Can you warp a rotor? Yes, take a factory rotor and autocross all day long, run it on a road course and turn them red, but normal driving makes it almost impossible to warp a large finned rotor.
Ride the H3 down a 13K foot incline and yes, it might warp. Drive it around town and no, unless there was a manufacturing defect. However, when a technician pulls rotor, puts it on a lathe, and checks it, if there are high spots, to him or her, it is warped.
The other big problem with what people say is a warped rotor is lateral runout. That is why GM has published quite a few bulletins in the past on checking lateral runout versus turning a rotor.

I might add, if a rotor is found to be warped, it is usually warped due to installation, not heat. Forget the cross pattern and cock the rotor upon install, and it will eventually wear into a warped condition.

Now, go back to the Toyota forum and bash GM there.
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Last edited by f5fstop : 09-15-2006 at 10:53 AM.
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