Quote:
Originally Posted by SLiDe_WaYz
The picture is self explanatory, to swirl pot makes it where you don't have to "burp" your system. It gets rid of the air bubbles without having to Jack the front of the car up, fill it, let it run, etc, repeat.
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That is more of a secondary feature. Its primary purpose is to allow the microscopic air bubbles formed at high heat areas in the coolant galleries (near heads, combustion chamber, cylinder walls) to have somewhere to go, and eventually rise up to the surface (in the swirl pot) and separate naturally via the coolant's own density and gravity. The air bubble-less coolant at the bottom, can then re-feed the system. The microscopic air bubbles can do a lot of damage, obviously raising coolant temps, but also things like cavitation or pitting of material at high flow areas. Excellent buy. Free bump