Rotor Specs - LotusTalk - The Lotus Cars Community
 
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post #1 of 9 (permalink) Old 03-11-2010, 11:28 AM Thread Starter
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Rotor Specs

I am getting ready to add Ceramic brakes to my 98 Esprit. Was wondering if anyone knew the minimum tolerance for front and rear rotors. Would like to just turn them, but its possible they may need new rotors

thanks in advance

mike
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post #2 of 9 (permalink) Old 03-11-2010, 03:17 PM
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The minimum dimension is stamped or embossed on the rotor. If you do go to ceramic pads be aware that they tend to chew up rotors so when you have to change pads the rotors will have to be cut, assuming there is enough materiel to do so. Ceramics also tend to be "grabby" when cold and do not drive well for street cars. Typically what is usualy sold as ceramics is really a highbred ceramic/metalic mix, with more streetable manners.
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post #3 of 9 (permalink) Old 03-11-2010, 03:44 PM Thread Starter
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Thanks David. I will check when I take the wheels off.
Indeed they are hybrid, not full ceramic. Just wanted
something better than I had w/o changing from
brembo to AP.
Mike
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post #4 of 9 (permalink) Old 03-11-2010, 08:35 PM
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Minimum thickness 25 mm (0.98 in.), max runout 0.10 mm (0.004 in), max
thickness variation .015 mm (.0006 in.)

You can turn them once. If you're going with the Carbotech, you need to turn them & do the whole bedding process. Meaning if you switch to Carbotech then you must stick with Carbotech. Can't change back and forth between brands.

Also before you drive the car hard make sure you get it up to temperature.

I have the Carbotech XP10's on my V8. Great pads even for street use. Also from my research it's very easy on the rotor. Even the brake dust is very easy to clean. The only complaint is the noise. And they don't last as long as stock pads.

Alan
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post #5 of 9 (permalink) Old 03-13-2010, 06:15 PM Thread Starter
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Thanks for the numbers Alan. Got the XP8s. Carbo Tech now offers pre-bed pads. hope all is well
mike
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post #6 of 9 (permalink) Old 03-13-2010, 09:33 PM
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I'm assuming you track the car?

Why the XP8?

-G
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post #7 of 9 (permalink) Old 03-14-2010, 05:01 AM Thread Starter
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I am a bit timid to respond do to your avatar...LOL I do not track the car, but I wanted to try something a little non-invasive to help my braking. The rotors need to be turned and was turned on to carbotech. Speaking with the rep the street pads were OK, these are one step up. Still a hybrid pad, pre-bed. for a 400 investment, seemed like a worthwhile try before new brake system ala AP setup. long story short, I street drive with a few intense mountain drives a year here in North Georgia. any input for the future of the brake set up would be great.
thanks

Mike
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post #8 of 9 (permalink) Old 03-14-2010, 08:01 AM
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Quote:
Originally Posted by mvesprit View Post
I am a bit timid to respond do to your avatar...LOL I do not track the car, but I wanted to try something a little non-invasive to help my braking. The rotors need to be turned and was turned on to carbotech. Speaking with the rep the street pads were OK, these are one step up. Still a hybrid pad, pre-bed. for a 400 investment, seemed like a worthwhile try before new brake system ala AP setup. long story short, I street drive with a few intense mountain drives a year here in North Georgia. any input for the future of the brake set up would be great.
thanks

Mike
No need to be timid.

How much HP and what tires do you run?

-G
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post #9 of 9 (permalink) Old 03-15-2010, 05:52 AM
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If you plan on driving very hard on the brakes you should have the brake and clutch fluid flushed so you know you have fresh stuff in there unless you KNOW it has been done in the past 12 months. Take a look at the reservoir. If the fluid looks dark and thick it's probably way past due. Be careful trying "exotic" racing type stuff for the street. Some of the pads have nasty wet weather habits, some won't work well till they get heated up. Others will chew up the rotors. Unless you are tracking the car it probably isn't worth it. On the track you can use up a set of pads in one hard day. Tires too.
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