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      04-30-2008, 03:55 PM   #8
white911
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Drives: 135I - white/coral red - sport
Join Date: Dec 2007
Location: California, MD

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Quote:
Originally Posted by asv View Post
20 minute sessions, I'm seeing about 255-260ish with OAT around 80-85. Its stayed quite cool at this point, but Jefferson isn't that demanding. I will probably beat on it a little harder tomorrow, but its expected to be a cool day.
This is probably why I had no problem on Jefferson with oil temps. I pulled it in for tire 'failure'. RFT overtemp/pressure and the weather was colder the begining of April.

Friday at the track on the main course -- the left-front-tire and the brakes gave up before the oil temp became a problem. The brakes were smoking; but not that hot, rotor temp was 570F after getting out with IR gun (but no cool down lap). Audi runs no fade about 700+ with HPS and the 911 is 800+ HT10 or PF97 (no fade). This is just annecdotal information, not scientifically collected; but for a serious weekend at the track, you will have more fun with some performance pads like Hawk HPS. I don't think you need anything more serious then that for starting out. But you need to keep a close eye on your left front tire, if you don't have a pyrometer, at least keep the pressure below 42psi.
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Alan
08 135I (AW/Coral Red - delivered 3/15/08 --
13 Audi S4, 83 SC (trackster), 90 C2 (Sally's Carrera), 04 Avalanche Blingmobile