I wander how the Holley electric fuel pumps would work? Those suckers put out something like 100 or more gallons per min. There a vain type pump with a 12v motor so it would be easy to control and they are about the size of a 350 oz/in servomotor. They also have a built in regulator that you can change the spring in and get what ever pressure you want. The good thing about them is they will still give the volume while holding pressure so coolant flow should be quite good. Best I rememeber they are around $100.00 bucks though.
I am going to use the power stearing pump from a import car for a CNC controlled oiling system but these pumps would not last without luben (atleast I dont think they would). They would be very good and cheap if the collant used has a lubricating additive. You have to drive them with a motor but it doesnt take much. If they hold up did it would be real quite.
I may have a extra one so I could try one. Any idea on what coolant would be good to try? I have never used coolant so I dont know the different properties of each.
Jess
GOD Bless, and prayers for all.