Is there anything out there that I can use to control an electric water pump and radiator fan for the street? It seems like the only option is to hook it up to a switch, which sucks, because you're shutting off your water pump. The idea is to mimic the flow of the mechanical water pump, and last I checked, they don't shut off and stop water flow. Mechanical pump flow is based on RPM, which does the job. But the way I see it, if you're going to have an electric pump, why not have variable pump flow speed based on engine temperature and not RPM? I'd love to see a module that controlled water pump speed and the radiator fan.

There's gotta be something i can do besides hooking up a toggle or fan switch to the pump.

 

Anyone wanna help me make this a reality? I see a lot of potential in cooling system mangement with an electric pump.

 

You're supposed to have it on full speed whenever the engine is running. Here is an email I got from Jay at Meziere, which makes the best EWPs.

"I do not suggest you vary the voltage that much, once you are under 10 VDC you can create too much heat in the electric motor. The amp draw of the pump is small enough that it would equate to about .145 HP to drive the alternator for that power requirement. The reason that you save the HP is because the mechanical pump needs to run at many different speeds. We only need to run at one. This allows use to design the impeller for that speed. We do not have the wasted HP at higher RPM the mechanical pump has. If you need to control the temperature I suggest doing it with the fan(s)." Thanks Jay

 

^^cool. thanks.

so much for the diagrams and rough plans i started drawing...