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Reply to "Swirl tank/ header tank"

I initially filled my header "full" at cold.    it then pee'd with several drives,  leaving a cold level about 6" down.    i can't recall the diameter of the tank to calculate the volume due to heat swell.

that was the amount i once calc. for coolant expansion (70 to 220f)   so i set the top of header tank about 6" above top of swril so swril should stay full.

having excessive empty volume will delay building pressure as that volume of air compresses

Last edited by jfb05177
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