Twin Turbo Ls3

[exwestracer]

If you want the same amount of temp differential, you need the same amount of heat exchange. If you're doing water/air with a radiator, the water is just a transfer medium; it does NOT improve the cooling efficiency of the overall system (compressor outlet temp vs. intercooler outlet temp). It can improve the packaging in the car, but a smaller radiator works the same way as it does with the engine...it won't remove as much heat.



Water/air with a chilled water reservoir is a whole different story...

[RSX302]

If you want the same amount of temp differential, you need the same amount of heat exchange. If you're doing water/air with a radiator, the water is just a transfer medium; it does NOT improve the cooling efficiency of the overall system (compressor outlet temp vs. intercooler outlet temp). It can improve the packaging in the car, but a smaller radiator works the same way as it does with the engine...it won't remove as much heat.

Water/air with a chilled water reservoir is a whole different story...

I'm all ears (ok eye's..LOL) and do appriciate your input...
I know that water is a better heat transfer medium than air(hence smaller turbo intercooler).
I agree that once you get the heat into the water, you now need to pull it back out using air (1:1 heat transfer with a bigger radiator)

I haven't done the math but most radiators I've seen don't use the same size as an air/air intercooler.

Also max 1:1 heat transfer would be based on 100% throttle all the time at max boost. I don't know too many that would plant the throttle with 800+hp 100% of the time? Road racing on the big track at Willow I might see full throttle on the front/back striaghts for less than 10sec? 145mph

example: 600-1200hp Radiator

[exwestracer]

I'm all ears (ok eye's..LOL) and do appriciate your input...
I know that water is a better heat transfer medium than air(hence smaller turbo intercooler).
I agree that once you get the heat into the water, you now need to pull it back out using air (1:1 heat transfer with a bigger radiator)

I haven't done the math but most radiators I've seen don't use the same size as an air/air intercooler.

Also max 1:1 heat transfer would be based on 100% throttle all the time at max boost. I don't know too many that would plant the throttle with 800+hp 100% of the time? Road racing on the big track at Willow I might see full throttle on the front/back striaghts for less than 10sec? 145mph

example: 600-1200hp Radiator

Good info here: http://www.bellintercoolers.com/page...FAQ.html#FAQ_5

Of particular interest is the last half of FAQ #5... They sell both, so I figure that info is about as un-biased as you can get... My comments were based on a direct comparison of inlet charge temperatures vs heat radiating areas. Obviouly, each type has it's place.