Which FI to run for a race car?

[puma]

Originally Posted by King Tut

I will correct this yet again. The supercharger kits don't make linear power. They make linear boost plots and the power plots are peakier and less linear than a turbo with a flat torque/boost curve.

would a supercharger produce less under hood heat than a turbo as this is a big concern for me?

[jamesm]

turbo placement has very little if anything to do with overheating issues. cooling system components and fan configuration are both far more important. if you don't want overheating issues, upgrade all of the stock components, add an oil cooler, and keep at least one stock fan. i'm not suggesting that the turbo location doesn't matter *at all*, just that it matter far less than those other factors.

[sw20kosh]

Originally Posted by ptuning

If you look at our S2000 low-mount turbo system, you'll find that it is one of the few systems on the market that can successfully complete an all out 30 minute HPDE session without the need for a vented hood, excessive heat insulation of exhaust components, and major relocation of other heat sensitive components. Turbo location goes a long way in taming under hood heat.



- Toan

Art.

[bjun]

My main reason purchasing the PTuning kit was the turbo placement. Since it is a low mount less heat is created under hood. And I can tell you from experience because I drove 26hours straight nonstop with the ptuning kit from ptuning virginia to back home in texas. No heating issues during the whole trip

[BlaineWasHere]

You're gonna need crazy cooling to track or race FI with this car. CRAZY cooling!

[King Tut]

Originally Posted by Eurasianman

OP, you might need to look into a different vehicle then :\

If vented hoods are not allowed in the racing series he is in (which seems weird to me), then there are plenty of other methods of venting the hot air in the engine compartment.

[King Tut]

Originally Posted by puma

would a supercharger produce less under hood heat than a turbo as this is a big concern for me?

Yes it will. Don't forget that in a whp/torque based class of racing where only peak numbers are factored in that area under the curve is where you can win the race. Turbos can make that peak torque number way lower in the RPM range and give you a ton more area under the curve.

[Reaper]

450+WHP on E85 with 80*F ambiant temps today. I was in boost more than i should have been on public mountain roads at 3,000 feet ASL. STOCK radiator, NO oil cooler, No vented hood. No over heating. 8 quart MAP oil pan running amsoil dominator 10w-30 and windshield wiper cowl removed. Ceramic coated and dei titanium wrapped.

[King Tut]

Originally Posted by bjun

My main reason purchasing the PTuning kit was the turbo placement. Since it is a low mount less heat is created under hood. And I can tell you from experience because I drove 26hours straight nonstop with the ptuning kit from ptuning virginia to back home in texas. No heating issues during the whole trip

I took many hour long trips with the Full Blown kit. Those aren't the conditions where the cooling system is going to struggle.

[King Tut]

Originally Posted by Reaper

windshield wiper cowl removed.

This would be one of those ways to help vent the heat under the hood.

[Reaper]

Originally Posted by King Tut

If vented hoods are not allowed in the racing series he is in (which seems weird to me), then there are plenty of other methods of venting the hot air in the engine compartment.

remove the cowl!

[bjun]

Originally Posted by King Tut

I took many hour long trips with the Full Blown kit. Those aren't the conditions where the cooling system is going to struggle.

True. Conditions are different in a race but on the way back I did have fun boosting here and there. Just giving my opinion on the low mount saying that it might help since he cant vent out air

[puma]

actually i beleive most racing series don't allow a vented hood, the cars need to look like a car from the factory. I don't even remember seeing a serie in which they were allowed, grand-am, continental tire, etc, none can add aero type of mod other than a front splitter and a rear wing (sometimes, not in the lower class)

[puma]

Originally Posted by King Tut

Yes it will. Don't forget that in a whp/torque based class of racing where only peak numbers are factored in that area under the curve is where you can win the race. Turbos can make that peak torque number way lower in the RPM range and give you a ton more area under the curve.

yeah that's right, a turbo would produce more power under the curve which isn't taken into account.


I guess ptunning would be the best bet but damn it's expensive.