Quote:
Originally Posted by GregWeld
Running down the road - the fan shouldn't be needed at all.
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Not completely true - if running the fan creates more negative pressure on backside of cooling system stack, running fan will increase cooling.
For example - when Mark switched Red Devil to 850W fan from 400W, it resulted in ~10 F reduction in coolant and oil temps (oil-to-water oil cooler in radiator) when running on track - with average speeds well above what you typically run on street.
Keep in mind this is a very thick (~5-6") cooling stack as well (A/C condenser, ICHE, radiator)
So ability to create more negative pressure on backside of cooling stack resulted in more airflow across coolers - and more heat transfer as a result.
Dave