zetec7 wrote:
My buddy insisted my cooling system wasn't going to work, that I needed a remote pressurized expansion tank, a remote filler neck, see-through bleed-nipple adapter, dual chrome-lined reverse de-coupling framulators, cooling-inversion gespatcho-stimulator modules, and a bunch of other stuff I didn't understand.
Then, I pointed out that my radiator cap is already the highest point in my cooling system, so if it worked in the original Ford Focus with nothing more than an overflow bottle, it ought to work for me, too, right? See - I'm learning!
It's not so much the cap location, it's more about if there are any spots higher than the top hose inlet of the radiator (if the cap is on the radiator).
I believe that on many of the Locost builds the radiator inlet is not the highest point in the cooling system.
In these situations a surge tank or remote cap at the highest point. A few inches higher than the head.
I also feel it is important to eliminate all air from the cooling system if possible to stop foaming (aeration) and help limit corrosion.