A lot of folks don't need the IC fan, it's only purpose is to move more air across the IC in a long uphill, boosted drive, like we have here in the mountains in AZ ,CO, etc.
In our mountainous conditions, we may be running uphill for many miles, and the fan lowers the IC temp and therefore engine air, minimizing knock.
On a dragstrip or short bursts on a street car, the IC acts only like a heat sink, it doesn't get a chance to heat up much, and will cool down to ambient before the next pass.
But, in mountainous conditions, we regularly run uphill for many miles, sometimes 25 or 30! So the fan moves air across the IC to lower its temp, making it more efficient for the duration of the uphill climb, and cooling it faster on the downhills before the next climb.
I added sides and top panels between the ends of the airdam and IC inlet to facilitate more flow. That helps us out here, but it is irrelevent to you "flatlanders!"
I am building my T Limited as a mountain car, but we also run CO2 spray on our ICs to chill it before dragstrip or "street events."
P.S. our temps can be between 100 and 115 degrees for more than THREE MONTHS in the summer!
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