Reply to "Overflow tank"

jfb05177Member

I just so happen to measured mine the other day for just such
mine is roughly 4" X 14" which is about 175 in^3 (0.7 gallons)
the expected thermal expansion of 6.4 gallons of coolant from 70 to 195F will be 47 in^3 which is about 3.7" in the overflow tank.

the seams on my tank at 4 1/2" from the ends with a center 5" section.

So if you are using it as an overflow tank, the maximun cold level should be about at the top seam (down 4 1/2"). My opinion, as an overflow tank just having "something" in it is OK, as it will just be the catch and return for the swirl tank venting the coolant expansion.

Now if you plan to use the over flow as an expansion tank, that would be differernt....

My reply is based just on my expectations and I do not have any experaince (my concern is that the pressure relief cap is on the pump discharge and with the resistance of the long tube runs and the two pass radiator, the pump head may cause discharge with out being for expansion)

1/12/156:31 PM

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