getting very tired of warping rotors, any suggestions? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 09-17-2003, 10:29 AM   #1
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Default getting very tired of warping rotors, any suggestions?

got the car with 68k 3yrs ago and every few months the rotors are warped and shaking again... I cut the first rotors twice, put cheap new ones on it with ceramic pads and had to cut them once already.. is this common with these bonnies or is it just cheap aftermarket rotors? what type of troubleshooting can i do to eliminate this? the rotors shaking like crazy now when i step on em... getting really old...

has anyone seen this or know the problem?
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Old 09-17-2003, 10:34 AM   #2
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I had the roughly the same experience with stock rotors, they just can't handel the stress very well. I have since bought a set of slotted rotors from www.domesticperformance.com and I have had no trouble with them at all. I am using cereamic pads with them and stopping is improved, warpage hasn't happened yet, and brake dust is gone. I would recomend the same setup.

Here is the direct link to the rotors if your interested: http://www.domesticperformance.com/p...roducts_id=108
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Old 09-17-2003, 11:07 AM   #3
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try some different pads.
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Old 09-17-2003, 11:13 AM   #4
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the old pads did same to old rotors...

i wonder if something else is causing this like calipers or even rear brakes not contributing to brake load (my rears have never needed replacement at yearly inspection)?
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Old 09-17-2003, 12:53 PM   #5
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Any time you have strong pads with weak/cheap rotors, you're going to have excessive wear or warpage. If you have ceramic pads, I'd get some lifetime rotors, also made from a stronger material.
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Old 09-17-2003, 04:11 PM   #6
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Quote:
Originally Posted by srgetz
the old pads did same to old ri wonder if something else is causing this [...?
(This is turning into a personal crusade of mine...)

Make sure the lug nuts are torqued evenly and properly to the right setting, ideally by hand with a torque wrench. Slamming them on with an impact wrench can encourage warping real quick. Yes, you can use torque sticks on the impact wrench, but it'* still possible to goof it up, especially if tightening in a circle instead of a star pattern.
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Old 09-17-2003, 05:39 PM   #7
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Quote:
Originally Posted by acg_ssei
Quote:
Originally Posted by srgetz
the old pads did same to old ri wonder if something else is causing this [...?
(This is turning into a personal crusade of mine...)

Make sure the lug nuts are torqued evenly and properly to the right setting, ideally by hand with a torque wrench. Slamming them on with an impact wrench can encourage warping real quick. Yes, you can use torque sticks on the impact wrench, but it'* still possible to goof it up, especially if tightening in a circle instead of a star pattern.
also on the torque stick, if your using a brake pedal jack(ie your car is up on a hoist) the torque stick will not be as accurate, you will still need a torque wrench
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Old 09-17-2003, 06:15 PM   #8
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what would be the way to judge if your using a tire tool instead of a torque wrench? just tighten till you cant tighten anymore without causing a hernia? or 3 grunts and a "hrrrrrrrrrrruuuuh" ?
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Old 09-17-2003, 06:21 PM   #9
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That'* very easy to answer, hoov. Buy a torque wrench and socket. It'* worth it. Even a cheapie $20 model.
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Old 09-17-2003, 06:47 PM   #10
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Quote:
Originally Posted by willwren
That'* very easy to answer, hoov. Buy a torque wrench and socket. It'* worth it. Even a cheapie $20 model.
Abso-tively. Heck, Christmas is coming: Have somebody _give_ you one.

I have a Sears Craftsman MicroTork 1/2"-drive, one that clicks when the setting is reached, and it'* been just fine. In addition, I've found that _some_ rotor warping can be relieved just by loosening the lug nuts and re-torquing them properly by hand with the wrench (and don't forget a drop of oil on the lug nut threads before putting them on, to get an accurate reading). I had a neighbor'* '89 LeSabre (or something like that) in for some unrelated work and it had terrible warping on the brakes. Had no funds to re-cut or replace the rotors, but I took a half-hour to just re-torque the lug nuts, and there was a noticeable improvement after that.

I'm not saying it will fix warped rotors altogether once they've gone bad, but it can minimize the problem.
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