3rd gen RX7 warped front brake rotors
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Joined: Aug 2003
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From: Orange County, CA, USA
3rd gen RX7 warped front brake rotors
I've had the car from new and ever since I had it the front brake rotors have needed skimming every 5,000 to 8,000 miles. Of course, this also means the rotors need replacing after each 2nd or 3rd skimming.
Happens on both front wheels, and, as likely expected, never the back ones
I have always used stock rotors and stock brake pads
The car is a very early '93 model
I don't do track driving. However, I do drive fairly hard, but I have several buddies with the same car and same driving habits that have no rotor warping problems. Of course, even when the car was in warranty, I got no sense from the dealer - they just changed 'em out (for free). However, now it’s my nickel, to say nothing of the inconvenience.
The only difference seems to be that my buddies’ cars are a '94 year or beyond. So I'm wondering, does anybody know of a change to the rotor, (thickness, for example), that Mazda may have made early in the gen3's life? Anyone else have this problem? Anyone solved it? Do aftermarket rotors do a better job in this respect? Are the rotors the same part for all gen3 model years?
Many questions, but the bottom line is that I want to fix it without making any major mod to the car. I'm coming up to a re-skim, (or more likely this time it will be a rotor replacement due to skim-down-caused “rotor-too-thin” syndrome. Any advice would be much appreciated.
Happens on both front wheels, and, as likely expected, never the back ones
I have always used stock rotors and stock brake pads
The car is a very early '93 model
I don't do track driving. However, I do drive fairly hard, but I have several buddies with the same car and same driving habits that have no rotor warping problems. Of course, even when the car was in warranty, I got no sense from the dealer - they just changed 'em out (for free). However, now it’s my nickel, to say nothing of the inconvenience.
The only difference seems to be that my buddies’ cars are a '94 year or beyond. So I'm wondering, does anybody know of a change to the rotor, (thickness, for example), that Mazda may have made early in the gen3's life? Anyone else have this problem? Anyone solved it? Do aftermarket rotors do a better job in this respect? Are the rotors the same part for all gen3 model years?
Many questions, but the bottom line is that I want to fix it without making any major mod to the car. I'm coming up to a re-skim, (or more likely this time it will be a rotor replacement due to skim-down-caused “rotor-too-thin” syndrome. Any advice would be much appreciated.
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Joined: Dec 2001
Posts: 14,716
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From: San Lorenzo, California
There is no such thing as warped rotors. It's a myth. What is occuring is you are not bedding your pads properly.
Read here:
http://www.stoptech.com/whitepapers/...otors_myth.htm
And, no there were no pad/caliper/rotor changes during the years.
Read here:
http://www.stoptech.com/whitepapers/...otors_myth.htm
And, no there were no pad/caliper/rotor changes during the years.
Thread Starter
Joined: Aug 2003
Posts: 230
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From: Orange County, CA, USA
Rynberg - Thanks for the input. Interesting stuff! BTW, if you know, any idea as to the best buy to replace the rotors - I feel I will need to replace them this tiime. Also, how about pads?
Louis M - Good idea!! Just did. Don't use the forum so often so I get excited and make errors! Thanks for pointing it out!
Louis M - Good idea!! Just did. Don't use the forum so often so I get excited and make errors! Thanks for pointing it out!
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Joined: Dec 2001
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From: San Lorenzo, California
Just get some Brembo/Iksuta solid discs. You can get them for $60/each.
If you want to improve the looks and "pad bite", you could get some slotted rotors (Powerslot for example).
As far as pads, I would just get some Hawk HPS. They are great street pads and are cheap to boot. If you want to do some occasional track work, get the Hawk HP+. They are a little noisy at times and they are harder on the rotors but you can invoke the ABS at highway speeds and they don't fade as bad as the HPS do on the road course.
If you want to improve the looks and "pad bite", you could get some slotted rotors (Powerslot for example).
As far as pads, I would just get some Hawk HPS. They are great street pads and are cheap to boot. If you want to do some occasional track work, get the Hawk HP+. They are a little noisy at times and they are harder on the rotors but you can invoke the ABS at highway speeds and they don't fade as bad as the HPS do on the road course.
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Joined: Dec 2001
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From: San Lorenzo, California
Originally posted by hondahater
how are they not warped if you can bring just the rotors to a brake place and have them shaved?
how are they not warped if you can bring just the rotors to a brake place and have them shaved?
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Joined: Jan 2004
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From: tampa
rynberg unparell would be more acurate but warped sends the same message. put a dial indicator on a rotor that pulsates when braking and it will show run-out. on the car lathes are better at eliminating this than the old syle lathes.
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Joined: Dec 2001
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From: San Lorenzo, California
Originally posted by mad_7tist
rynberg unparell would be more acurate but warped sends the same message. put a dial indicator on a rotor that pulsates when braking and it will show run-out. on the car lathes are better at eliminating this than the old syle lathes.
rynberg unparell would be more acurate but warped sends the same message. put a dial indicator on a rotor that pulsates when braking and it will show run-out. on the car lathes are better at eliminating this than the old syle lathes.
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