986 takes the top spot at Global Time Attack Round #2

[Topless]

Well done Eric! Gave those Sti drivers a show you did. Sort of bringing a gun to a knife fight.

I am curious how you kept the car cool during continuous lapping in 117F. I have driven out there in 106F and while she never completely overheated, I did see oil temps around 245F and could feel the heat soak affect on hp. Tires just turn into goo at those temps.

[jaykay]

Nice....Porsche itself should take note of your developments!

I am always curious as to how those monster rear wings are sized and set up. Would this not make for a skittish front end .....yeah I know everyone does it and it works...

[Eric523]

Originally Posted by jaykay

Nice....Porsche itself should take note of your developments!

I am always curious as to how those monster rear wings are sized and set up. Would this not make for a skittish front end .....yeah I know everyone does it and it works...

On my car, I went with a Porsche cup car proven set up. I have a 996 cup front bumper with splitter and the 996 cup rear. With the square tire widths on my car, the front has a lot of grip and the wing does help keep the rear end behind me. We added a little bit of rear wing angle later in the day to try and help the overheating rear tires keep the rear end in place even more.

I snapped this quick picture so I could remember where I moved it from, but it shows the amount of adjustments available.

[Eric523]

Originally Posted by Topless

Well done Eric! Gave those Sti drivers a show you did. Sort of bringing a gun to a knife fight.

I am curious how you kept the car cool during continuous lapping in 117F. I have driven out there in 106F and while she never completely overheated, I did see oil temps around 245F and could feel the heat soak affect on hp. Tires just turn into goo at those temps.

Yes, there were Evo's, STi's, a crazy GTR, and a Corvette that were competitive. The top Evo was just over 600hp, the Corvette and STI over 500, and the GTR I was afraid to ask. They were running Michelin or Conti slicks, and the HP/weight was better but the Boxster was hard to beat on a track like Chuckwalla.

The heat was rough, but we had a lot of practice in May and June. Buttonwillow, Streets, and AAA speedway all had temps in the 90's or more recently so we thought we were prepared. Didn't make it any more enjoyable, but it did give us a leg up. At the beginning of the year, we tried on some of the thick core CSF aluminum radiators and switched over the street center radiator to the 996 cup version with the exit out the top of the bumper. Not only is the exit different, the cup car center radiator is over double in size. While not new, the big openings in the fender liners and lack of fans or a/c condensers help the radiators breathe at speed better too. This kept us down to a max coolant temp of 209 over the weekend.

Tires were getting killed. A fresh set of slicks lasted four sessions with surface temps over 250! That hurt our chances to go back to back on the overall wins, and we had to settle for 2nd on Sunday.