Hello and I have an electric water pump question

[Jonny Hotnuts]

I was not implying that idea was something I was going to do; rather to the contrary, to me it was just an idea.....but....

A few made the suggestions that one could use a thermostatic control switch to prevent the pump from "dead heading".

That is exactly what I was saying to begin with..... with the exception that if you used a thermostatic switch you should NOT also need the mechanical thermostat in the motor. I suggested that you could use a variable thermostatic switch, and this would allow you to change the operating temp of the motor. If you used a set value thermostatic switch to run the pump, it would be the same as having a mechanical thermostat of that same temperature.


I would like to know if the BS that I am suggesting is correct......if you use a thermostatic switch to run the pump you do not need a mechanical thermostat in the motor.


-JH






 

[JackD]

The mechanical thermostat that you depend on every day that will out last the family car is cheaper, more available , and reliable than just about anything you can put on a racer.
If your system demands an electric pump you can duplicate the symptom of a dead head by covering the outlet of your shop vacuum and listen to the motor unload as does the current required to drive it.
These are basics that you already know, are a good place to start, and it helps you to finish with all your stuff intact also.

[jimmy six]

It many not make any difference but you can check out this site for electric pumps. www.batinc.net Go to the Mocal systems. The have an electronic controller for their 12 volt water pump. I have never used anything but a restrictor in the return line to control the coolant water but I don't make the heat or HP of many. My only concern with a lot of the pumps is how munch pressure the seal will withstand. Good Luck...Great Thread

[Speed Limit 1000]

One thing we found on some electric pumps they will stop if the water gets too hot. Not a good thing, so watch out for the plastic impellers in the "water puppy" type pump, only good for 212 or so on the water temp.