Reply to "Cannot get my Pantera to cool"

tsoloMember

quote:
Originally posted by JFB #05177:

does any one know the volume of the over flow tank?
just a quick though, the free volume in the over flow needs to be about twice of the coolant swell to limit the air space pressure to ~15 psig.

My car with Fluidyne radiator holds 5 gallons. I know this for a fact as I filled it multiple times. The overflow tank measures approximately 4-1/2"x15-1/2". Subtracting a 1/16" in all directions for wall thickness leaves 4-3/8"x15-3/8". Convert to decimal 4.375"x15.375". The volume = 2.1875x2.1875x3.14x15.375 = 231.13cubic inches. A gallon of water is 231 cubic inches so the overflow tank will hold a gallon at max capacity. I fill mine to about half way which allows for about 1/2 gallon of expansion. In case you did not know the overflow tank is vented to atmosphere, it does not hold pressure.

Steve

4/27/144:33 PM

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