05-05-2010, 11:04 AM
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#1 (permalink)
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A True Z Fanatic
Join Date: Mar 2009
Location: North East
Posts: 6,203
Drives: 09 370Z Sport M6
Rep Power: 655
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Quote:
Originally Posted by cossie1600
I only have two autox on the car so far, but ice mode was only apparent during complete panic stop when I have to do a complete stop at the finish line. It was never a real issue when I was running. I have a stock car with 265 and 285 tires
I have experienced ice mode in my 350, C6, RX-8, you just get used to it.
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This is where it seems to get a little different between us.
I can brake as hard as I want for about 3 runs. After that I get ice-mode under firm straight line braking every time. It doesn't matter how gently I roll on to the brake either. The brakes are hot but not cooked, and the pads have twice the operating temperature range of stock (Mintex Extreme) but are not an aggressive compound at all. The brakes have a 15-minute cool down between runs.
The front ABS actuators pulse away like crazy as if there is lock up yet there is none. I have tried altering the brake bias to the front and to the rear by using a more aggressive pad on one axle at a time. This had no benefit.
Yes, stiffer suspension all around will prevent the weight transfer, and this is on the cards anyway, but the fact that it only happens to me when the brakes are warm makes me think there is something else at play here. Either the ABS computer is getting bad input from one of the wheel speed sensors due to heat expansion or something else in the ABS is acting up when the brake fluid temperatures rise.
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