Has anyone ever used electric water pump?
Has anyone ever used electric water pump?
(OP)
I'm in the midst of a project car buildup (a Lotus Carlton with twin HKS 3037 turbo). And I'm seriously considering an electric water pump due to:
1. Lack of space in front of the engine due to larger water exchanger
2. It would simplify my coolant path and enable me to use water manifolds inlet and outlet which in turn allows me more even heat distribution in the engine.
Now, my question is.
Has anybody ever used an electric water pump? (eq. Meziere, Davies Craig, EWP, or anything else)
Has anyone ever measured their flowrate against
restriction? (all of them measured at 0 restriction in their specs. Which is nearly meaningless.)
How reliable are they?
How well do they perform?
Thanks in advance for any information shared.
1. Lack of space in front of the engine due to larger water exchanger
2. It would simplify my coolant path and enable me to use water manifolds inlet and outlet which in turn allows me more even heat distribution in the engine.
Now, my question is.
Has anybody ever used an electric water pump? (eq. Meziere, Davies Craig, EWP, or anything else)
Has anyone ever measured their flowrate against
restriction? (all of them measured at 0 restriction in their specs. Which is nearly meaningless.)
How reliable are they?
How well do they perform?
Thanks in advance for any information shared.





RE: Has anyone ever used electric water pump?
I was also curious about flow vs pressure data, but have used the 110 l/min pump on the engine coolant systems supporting +650hp with no problems. Its a very handy unit esp. with the controller.
RE: Has anyone ever used electric water pump?
RE: Has anyone ever used electric water pump?
Nice flexible unit does what is says on the can.
RE: Has anyone ever used electric water pump?
RE: Has anyone ever used electric water pump?
20 diameters of straight section rings a bell, I can check previous test reports at work tomorrow.
-Reidh
RE: Has anyone ever used electric water pump?
Aside from that, I'm still thinking of how to regulate flowrate to control block heat dissipation. To regulate the pump speed itself is simple, but don't we have block coolant pressure to consider? Once the outlet orifice size is fixed, if you lower the pump speed then block pressure would drop automatically wouldn't it? Wouldn't that cause a less than effective cooling? So to make block pressure constant and still be able t regulate flow rate we'd have to be able to adjust outlet orifice size?
RE: Has anyone ever used electric water pump?
RE: Has anyone ever used electric water pump?
Hahaha, I got carried away, but its an idea.
Good luck.
RE: Has anyone ever used electric water pump?
http://www.thinkauto.com/waterpumps.htm
Regards,
Jean
RE: Has anyone ever used electric water pump?
~Happy Motoring!!!
RE: Has anyone ever used electric water pump?
Just curious, what radiator efficiency you are estimating for 2500 CFM and 35 gpm for a 300-375 HP engine?
-Reidh
RE: Has anyone ever used electric water pump?
In my experience, the 2500 cfm would be a minimum for cooling with little or no vehicle movement at or near idle. Also from experience in a cast iron sbc 355 ci making about 425hp. A 2500 cfm fan has done well with a OEM 4 core radiator using Purple Ice and a 50/50 mix of antifreeze.
I didn't do the math to determine efficiency and admittedly, I didn't really consider higher oil temp from "twin HKS 3037 turbo." Oil cooling efficiency would surely be a factor in considering proper coolant flow, as would a few other factors that come to mind thinking about how to repsond to your question.... fuel, cylinder wall thickness, water jacket design, etc. ....is my face red
RE: Has anyone ever used electric water pump?
Didn't mean to paint you in a corner, I was just curious.
-Reidh
RE: Has anyone ever used electric water pump?
Actually, I appreciated your question. It made me think and that, is a nice thing. Thanks! ~FD