Coolant flow

Phreakish said

The thing with a race car is that the alternator would effectively be converting rpm to electricty to run the fan anyway, so you might as well run it off the engine.
Engine driven fans suck anywhere but higher rpms, which is why most hot rodders overheat in traffic and not on the highway. OEMs have been using electric fans for years without issue, even on high output engines. There's absolutely no case where they can't work unless someone is a cheapskate and can't wire.

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most dirt cars dont run alternators, and its the only place i know of a good electric fan properly set up and wired wont work! it cause of the sustained high rpms over time! go check out a good super street class or one of the chevy crate engine class's thay all have biggest double pass aluminum radiators that fit, 1 to 1 pulleys and a fixed 4 blade fan! anything less and by end of 30 to 50 laps will be pulling in pits puking coolant!! if thay running that E85 and run up front in clean air then some will cut 2 blades off but every piece of the cooling system will be high dollar CV products and thay still 220 to 240 degrees at end of 30 laps!

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