> Did anyone catch speed visions discussion concerning aluminum radiators that
> are used in racing. They basically said that with a high efficiency
> aluminum radiator system, they have dispelled the myth that a thermostat or
> restrictor makes a car run cooler by holding water in the radiator longer.
> They say that race cars run cooler by running water through the system as
> fast as possible, i.e, wide open.
Not sure about this, but in the 510s that BRE ran in the Under 2.5 (liter)
Trans Am they used restrictors to create back pressure in the cooling system
and prevent the water pump from cavitating while running at sustained high
revs. When this happened there was no movement of the coolant at all.
Obviously not a good thing.
Don't forget that the oil circulating through the engine plays a large part
in engine cooling, too.
FWIW, Ron
Ronnie Day
ronday@home.com
Dallas/Ft. Worth
'71 510 2-dr (Prepared Class Autocrosser)
'73 510 2-dr (Street Toy)
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