I had an idea....why don't the manufacturers create an actual area behind the back wheel for the oil cooler and have it suck air out of the engine compartment at the same time?? It seems as though most of the speedsters out there have an external oil cooler or will one day need one so why not just start out with one. And since they would be putting it in while building the car they could create a better location that tucks it up under a little bit more and then have a hole in that area so that when the fan is sucking air through the cooler it is also creating a suction for the engine compartment. My only thinking as to why they don't do this is that it wouldn't move that much air compared to the doghouse fan and may not really be significant enough of an improvement. But just for the sake of astetics if I was building a new car I would pay the extra to incorporate it into the innner wheel well a little more. Ideally you could even design it to be removable without even removing the tire. What do you guys think? And on a related subject why not make the air inlet hole for the main fan at the time when your building the car??? Maybe there are some cars running cool enough not to need it???? But it seems to me most of us do run these things.
Also I checked the diameter on the 356 pulley and it is roughly 3.75 inches. My VW pulley is 4.0 inches. OK that is only about 6 percent increase in speed? My question is if you increase the speed 6 percent, but never go over 5000 rpm you are still effectively turning the fan as if you were at 5300 rpm. Your still under red line so why all the worry about putting on a welded and balance fan???? Am I missing something? And what is the actual change in the air flow from the fan by increasing the speed 6 percent?? Somebody know how to calculate that?
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