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NASA Time Attack - worlds largest splitter?

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Old 12-13-2015 | 11:06 PM
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Originally Posted by AxisMark
I'm sure this has been posted before, but worth a post on this thread. Porsche 968 Time Attack car!!


Stolen from www.club944.net
That 968 only just made it to this year's WTAC event. A LOT of time and money went into that build and it should develop into the fastest Time Attack sedan on the planet if the Sims were accurate. It only managed 3 laps in very very moderate anger. Best time was a 1:26 with soft tune and conservative driving. By comparison a 991 Cup does approx 1:30 on same track. A Dallara F3 is in the 1:25 region. The winning time for the WTAC this year was a 1:23.8 by a very well developed local Evo. Said to be the fastest TA car in the world currently. The target time for the 968 is 1:20 to 1:21 and remember, we don't run slicks down here. We do run some control soft R spec Yokos but I wonder what they'd be like on a qualy slick?

The best result from a US car was the much vaunted Sierra Sierra Evo driven by Dave Empringham back in 2011 with a 1:29.

The guys from Lyfe Motorsport came down this year with their beautifully presented GTR35 but unfortunately had the motor blow very early. They borrowed a motor from someone at the 11th hour but only managed a 1:32. Great bunch of guys though. Hope they come back. Car has a lot of potential at over 1000whp but they are a heavy thing to start with. Time will tell....(sorry)
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Old 12-13-2015 | 11:13 PM
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333pg333- it's good you don't run slicks in time attack, that could make it really expensive
Old 12-14-2015 | 12:56 AM
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Hi Cory

These R specs are about $650 per tyre. We can buy slicks for less than that although Michelins are a bit more expensive in a similar size (295x18")

Our splitter is a little smaller than the one on the US Evo. We're in a 'lesser' class and don't have the same modifications available to us as the Pro class cars. We do run dual diffusers under there. We had to custom make a different sway bar setup to relocate behind the front axle just to provide room for the diffusers.

While TA isn't held in high regard with the majority of PC type racers, the great attraction is how far they push these cars both on and off the track.
There have been some cases of the Pro class cars which create so much downforce, blowing out sidewalls on these tyres. Pretty scary stuff!
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Old 12-14-2015 | 07:54 PM
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this is the craziest front downforce car I've ever seen or raced against; it's from the west coast, and is a front wheel drive Toyota Scion TC with a 2.4 liter turbo motor (extremely turbocharged to the tune of 1400 hp). it develops incredible downforce on the front wheels, and is very fast. it sucked the paint off my weenie 335 whp Civic like I was tied to a tree at Road Atlanta. I top out there at 158 mph at the end of the back straight (the Scion FLEW past me and I had to hold on with both hands in the jet-wake it left) and they were saying that they were over 190 mph (and they had a front tire explode going up the back straight too -- looked like a bomb had gone off and blew all the front bodywork off). it's a crazy build car for sure.


Old 12-14-2015 | 08:03 PM
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Originally Posted by d15b7
this is the craziest front downforce car I've ever seen or raced against; it's from the west coast, and is a front wheel drive Toyota Scion TC with a 2.4 liter turbo motor (extremely turbocharged to the tune of 1400 hp). it develops incredible downforce on the front wheels, and is very fast. it sucked the paint off my weenie 335 whp Civic like I was tied to a tree at Road Atlanta. I top out there at 158 mph at the end of the back straight (the Scion FLEW past me and I had to hold on with both hands in the jet-wake it left) and they were saying that they were over 190 mph (and they had a front tire explode going up the back straight too -- looked like a bomb had gone off and blew all the front bodywork off). it's a crazy build car for sure.


Yep, i remember that beast. it was very fast!
Old 12-14-2015 | 08:06 PM
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Originally Posted by wanna911
Track is much faster since James ran that time. I think they repaved the whole thing. He was 5 seconds slower than Cody Kishel, who has a monster of a Corvette, and can really wheel it, but still 5 seconds off the pace for unlimited. James in the same car would be 40-42 today.
its to see that people give two Sh**s about anything TA oriented. Cody seems to be doing will in NASA right now on the east coast also.
Are you talking about Jame's turbo cup?
Old 12-14-2015 | 08:08 PM
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Originally Posted by 333pg333
That 968 only just made it to this year's WTAC event. A LOT of time and money went into that build and it should develop into the fastest Time Attack sedan on the planet if the Sims were accurate. It only managed 3 laps in very very moderate anger. Best time was a 1:26 with soft tune and conservative driving. By comparison a 991 Cup does approx 1:30 on same track. A Dallara F3 is in the 1:25 region. The winning time for the WTAC this year was a 1:23.8 by a very well developed local Evo. Said to be the fastest TA car in the world currently. The target time for the 968 is 1:20 to 1:21 and remember, we don't run slicks down here. We do run some control soft R spec Yokos but I wonder what they'd be like on a qualy slick?

The best result from a US car was the much vaunted Sierra Sierra Evo driven by Dave Empringham back in 2011 with a 1:29.

The guys from Lyfe Motorsport came down this year with their beautifully presented GTR35 but unfortunately had the motor blow very early. They borrowed a motor from someone at the 11th hour but only managed a 1:32. Great bunch of guys though. Hope they come back. Car has a lot of potential at over 1000whp but they are a heavy thing to start with. Time will tell....(sorry)
Cole is our only hope in the TA world. Nobody else wants to set a budget for Worlds like the Sierra Sierra days.
Old 12-14-2015 | 08:08 PM
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Originally Posted by wanna911
Track is much faster since James ran that time. I think they repaved the whole thing. He was 5 seconds slower than Cody Kishel, who has a monster of a Corvette, and can really wheel it, but still 5 seconds off the pace for unlimited. James in the same car would be 40-42 today.
i cant imagine that red Evo from japan running 1:36, but if you say so. sounds like the track is a bit faster if the faster ST2 guys are running 1:47.
yes, james new cars are definitely that much faster, even with DOTs (one of the requirements of the TA.)

I think a lot of the splutters are a little over kill.. after all, its not a wing, its a spitter. more is not necessarily better, in fact, going too large can really hurt downfoce if the nose ever gets pitched up.
now the wing on the Scion, thats a different story. its a "wing"!
Old 12-14-2015 | 09:25 PM
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Originally Posted by mark kibort
i cant imagine that red Evo from japan running 1:36, but if you say so. sounds like the track is a bit faster if the faster ST2 guys are running 1:47.
yes, james new cars are definitely that much faster, even with DOTs (one of the requirements of the TA.)

I think a lot of the splutters are a little over kill.. after all, its not a wing, its a spitter. more is not necessarily better, in fact, going too large can really hurt downfoce if the nose ever gets pitched up.
now the wing on the Scion, thats a different story. its a "wing"!
FWIW FXMD ran a 1:37 in a NSX.......
Old 12-14-2015 | 09:25 PM
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Originally Posted by Domkouki
its to see that people give two Sh**s about anything TA oriented. Cody seems to be doing will in NASA right now on the east coast also.
Are you talking about Jame's turbo cup?
I think a stockish or grand am 7 cup would run low 1:40's honestly.
Old 12-14-2015 | 09:52 PM
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That car has been around for some time. Wondered if it's still around. Always thought that it would have massive drag (more than the usual TA car). Am surprised that it could hit 190mph! I would have thought that the organisers of WTAC might have contacted them to try and get them down here.

Mark, a lot of cfd and even wind tunnel work has been done on these TA cars and these large splitters are here to stay. In fact many of the leading TA cars have explored Aero a lot more than some oem based series due to much greater range within the rules. While ideally the nose is better off in a pitched forward or level mode, most of these cars are running very stiff springs and don't tend to sit back on their haunches with nose in the air like a speedboat type image. Plus they have active diffusers under there which greatly assist in moving the pressurised air upwards instead of creating lift.
Old 12-14-2015 | 11:35 PM
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Originally Posted by d15b7
this is the craziest front downforce car I've ever seen or raced against; it's from the west coast, and is a front wheel drive Toyota Scion TC with a 2.4 liter turbo motor (extremely turbocharged to the tune of 1400 hp). it develops incredible downforce on the front wheels, and is very fast. it sucked the paint off my weenie 335 whp Civic like I was tied to a tree at Road Atlanta. I top out there at 158 mph at the end of the back straight (the Scion FLEW past me and I had to hold on with both hands in the jet-wake it left) and they were saying that they were over 190 mph (and they had a front tire explode going up the back straight too -- looked like a bomb had gone off and blew all the front bodywork off). it's a crazy build car for sure.


This came to Miller few years ago and ran lap battle same wing configuration, then it was said to have around 800 hp it barely beat my then stock motor c5z06 by 1.5 sec and I was running no aero just slicks and Phadt shocks and stock springs maybe making 350 rwhp. Seemed like a lot of effort for the lap time it got. In my ST1 build I would have beat it by more than 3 sec. I'm sure it's gotten faster with 1400 hp but I would still put a couple of thousand on a 45 min race Cole and & Kyle from Lyfe Motorsports are both awesome. It was sad to see there motor go in the first session.Name:  photo272.jpg
Views: 1295
Size:  528.0 KB I was watching via live streaming

Last edited by z06801; 12-16-2015 at 12:12 AM.
Old 12-15-2015 | 03:01 AM
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Yes, really nice guys. They were 2 garages down from us and were always happy to talk even though there were going through some major hassles on the other side of the Planet. The response from the locals in trying to get them back and running was pretty epic from what I heard. I'm sure they will want to come back and put forward a much better account of them and their car. Unfinished business...!
Old 12-15-2015 | 02:20 PM
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Originally Posted by Evan Fullerton
Tony Szirka's Evo is fast, but fragile and not exactly a cornering machine from what I have seen. He ran a 1:46.5 on the CW13 configuration of Buttonwillow last month which is 997 Cup fast so nothing to sneeze at. The car ran just last week testing for a NASA event so I don't think it has been crashed. I understand it has been somewhat of a budget build and is his shop car, Tony is also a super funny guy and I am sure is getting a kick out of people making fun of his splitter canard wing. Tony really understands that cars and racing are a hobby and has as much fun with it as he can. If you get a chance to do a Global Time Attack event, Tony is a big part of making them fun. They are far different then a POC or PCA weekend but you get a lot of clean track time and they make good test days. It's a group of guys who mainly tinker with their cars in their spare time and are just out there to go fast, test their, tentative at times, understanding of engineering principals, and have fun which a nice refresher from a lot of the Porsche focused events I have been at where everyone is so serious and if you don't have a GrandAm Cup or better with a toter home, you don't rate. It is much more about grassroots I built this in my garage, lets see if it works then any other event I have been to. Tony owns UMS Tuning in Gilbert AZ which is next door to Chris Caroll's TurboKraft. I believe both at one point worked for Bob Holcomb of MODE fame before Bob started making more gun parts then Porsche parts and they opened their own shops.

GTA_SLB 2015 fast lap - YouTube
Correct - I had my cars messed up.
Old 12-16-2015 | 12:15 AM
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Here is a video of that scion when it came to Miller. You can see my c5 z06 bear down on it coming past the apex at 2:21 in the video, cool guys glad they came out, it was fun to chase them.
A front wheel drive car with that much power would have to be a handful


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