Hello. I have an American Iron race car. I have a reoccurring problem with over heating. After about 4-5 minutes of vigorous on track use, the car goes to about 240-250 degrees. I can get it to come back down unless I slow way down to cool down lap speed.
A little background: the car has Tiger Racing bodywork, bumper, heat extracter hood, etc. The radiator is a Fluidyne unit and it is fully ducted. I'm very confident that the issue is not air flow related.
Last year I ran a stockish engine, same issue. This year I'm running a 347 Dart based shortblock. No difference. Ran a Edelbrock counterclockwise water pump in both engines. I've tried running a water flow restrictor in place of the thermostat and no thermostat at all. No difference.
I'm know I have a early factory Fox timing cover. From my research, I gather that they are directionally specific as far as which way the water pump spins. But typically people done have issues running a cw timing cover with a ccw pump. Probably because they are not stressing the system like in a racing environment.
Any ideas? I'm wondering if my pump impeller is slipping on the shaft. I've read they are not staked like the Stewart pump is. Also, I'm wondering if the pump is spinning the wrong way. I ordered the CCW pump but wondering if it was boxed wrong. I've also bought a CCW timing cover, but not optimistic it's going to solve my problem.