Quote:
Originally posted by Volenti
No, thats' wrong, thay can suck water just fine, they just can't suck air very well, and won't self prime.
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Believe what you want, but you will cut your flow WAY down, and ANY... ANY little disrpution in the coolant flow and the entire thing stops pumping water where it should. A sealed closed loop system is a bit different, but an open rese below the pump is pretty much about worst case scenario.
I prefer to NOT run something that is just relying on water tension to do. ( I mean in some way its just a fancy siphon then.) Which if you think about it.. water wetter could make that even harder to do when it breaks up the surface tension of the water.
Read the the packaging for the pump in there it says pretty clearly, that the pumps are NOT designed to suck but only to push coolant.
Also the higher end the pump teh easier time it would have "sucking water" as it would be able to overcome the gravitational forces that are pulling the water back down. a lower end pump may not dig it at all if there is much resistance on the output side of the pump. Just cause it can be done doesnt mean its the right way to run something.
For all intents and purposes they CANT suck water on their own. (needs to have a water stream established Then raised above the water surface ( prime it)).