Mythbuster: continuing project thread of my 1303 '75

[Steve C]

Hi

An advantage for drags etc with a air 2 water IC is that you can fit a ice box in the system to really take the heat out of the cooling water, not really practical on road car.

On a road car you cant stay on boost for very long until you have to back off, so a air 2 water IC will smooth out the spikes in intake temps, were Wallys air 2 air IC is a winner for him is that when the motor needs the cooler intake temps his car is usually travelling at constant high speeds with lots of air flow over the IC.

Steve

[Wally]

Originally Posted by Steve C

Hi

An advantage for drags etc with a air 2 water IC is that you can fit a ice box in the system to really take the heat out of the cooling water, not really practical on road car.

On a road car you cant stay on boost for very long until you have to back off, so a air 2 water IC will smooth out the spikes in intake temps, were Wallys air 2 air IC is a winner for him is that when the motor needs the cooler intake temps his car is usually travelling at constant high speeds with lots of air flow over the IC.

Steve

Yeah, very true Steve, but probably because of the sheer size of my air-air intercooler, I even see intake temps going down the short runs of the 1/4 mile.
Right on the starting line, after waiting and idling in hot summer periods, temps do climb however, but the water/meth injection usually takes care of those elevated temps. Temps never got over 40-45 Celcius IAT after an hour or more of standing still, heatsoaking while waiting after hot 1/4 mile runs, (the worst possible conditions therefore).
The alternative of Armin Klein (horizontal air-air intercoolers inside the engine compartment with fans under both sides) is more subtle though and seems to work very well for him too