S2000 Under The Hood S2000 Technical and Mechanical discussions.

Technical Question

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Old Jul 27, 2001 | 11:12 PM
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From: Belforte del Chienti
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After I have lower springs, the car seems to brake too much on the rear wheels. On the "normal" cars if you have lower springs or you drive with other 4 people (in other words if the car is more close to the ground than in normal condition) there is a "braking compensator(?????)" that gives more braking power to the rear wheels, is it the same with s2k? And if yes is it possible on the s2k to adjust the braking power of the rear wheels?
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Old Jul 29, 2001 | 02:43 PM
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There is no manual adjustment for front/rear ballast, I'm not sure if there is any sensor activated ballast, but I doubt it. Most people I know with purpose built sports cars have added a ballast valve to their dash to manually adjust front/rear braking pressure for dry/wet conditions.
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Old Jul 31, 2001 | 07:22 AM
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From: Belforte del Chienti
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Probably you are right, I took a look under the car and there is no sensor activated rear ballast, probably was only my sensation (I have the car since only 2 months).
I thought that the car was braking too much on the rear wheels also because after 30 min. in a race track, the rear brake discs was smoking a little bit more than the front brake discs, I think it should be the contrary, or not?
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Old Jul 31, 2001 | 08:49 AM
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Originally posted by sixtynine
I thought that the car was braking too much on the rear wheels also because after 30 min. in a race track, the rear brake discs was smoking a little bit more than the front brake discs, I think it should be the contrary, or not?
The stock pads tend to fade when subjected to high heat of track use. It has been speculated that the rear brakes only overheat because of fade in the front. I have observed no rear overheating on my car when running aftermarket pads, but have seen that fast drivers running stock pads have the same problem you do.
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Old Jul 31, 2001 | 09:59 AM
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From: Belforte del Chienti
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The stock pads tend to fade when subjected to high heat of track use. It has been speculated that the rear brakes only overheat because of fade in the front. I have observed no rear overheating on my car when running aftermarket pads, but have seen that fast drivers running stock pads have the same problem you do.
It must be like you said, also because the rear brakes are not cooled like the front.
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Old Aug 3, 2001 | 05:57 PM
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On another Honda I have owned I recall a feature named EBD that stood for Electronic Brake Distribution, that I always thought to be some sort of dynamic front/rear brake bias adjustment.

Is this on the S2k as well?
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Old Aug 4, 2001 | 05:58 AM
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With abs they usually don't use a weight compensator with the exception of trucks. The best way to check the static brake balance is to disable the abs and do a pnaic stop to see which wheels front or rear lock first. You want the fronts to lock first.
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Old Aug 5, 2001 | 12:26 PM
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I think there is a ballast compensator connected to the rear left wishbone. The difference with other cars is that it doesn't activate a hydraulic regulator but it uses a rod to modify the linear movement to circular then through a potensiometer? into signal going into ECU and used for the EBD system that our car has. My opinion is that if you lowered your car (any car) you should adjust the brake balance. In the S2000 you should shorten the rod. You should determine the travel of the rods mounting point, on the wishbone side, by raising the car in stock height and then let it drop to lowered . You have to shorten the rod by that amount.
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Old Aug 23, 2001 | 03:49 AM
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I think there is a ballast compensator connected to the rear left wishbone. The difference with other cars is that it doesn't activate a hydraulic regulator but it uses a rod to modify the linear movement to circular then through a potensiometer? into signal going into ECU and used for the EBD system that our car has. My opinion is that if you lowered your car (any car) you should adjust the brake balance.


You are right Greece_S2000. There is a ballast compensator connected to the rear left suspension and it works exactly like you said. My car is 30 mm lowered, more or less, and I shortened 20 mm the rod. I didn't tested precisely the car but now it seems to brake in the right way; before, also during not hard driving, the rear discs were always very hot, more than the front, now front and rear discs seem to be hot in the same way. I can feel the improvement also if I brake during, or when I just started, to do a turn; before this ballast adjustament, the car gave to me the feeling to skid on the back, now is much better.
I think that who has the car lowered must try to do that.
A last question, what's "EBD system"?
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Sixtynine
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Old Aug 23, 2001 | 08:22 AM
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EBD: electronic brake distribution
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