[pharmd]

I will have the 800hp Griffin radiator, stock fans, and currently have an Meizere electric water pump. I think most of you guys would agree for HPDE and even Autox the EWP has to go. So if I go back to my stock water pump, will the upgraded radiator be enough to ensure adequate cooling? Is their a nicer pump that I should look into (something cost effective)?

[Spruill242]

You've already got the electric pump. Might as well try it. Amount of flow isn't always the biggest thing. Having the right amount of heat exchange is. Those pumps flow what... 55 gpm? And they flow it all the time. It just may be enough.

[Mojave]

You've already got the electric pump. Might as well try it. Amount of flow isn't always the biggest thing. Having the right amount of heat exchange is. Those pumps flow what... 55 gpm? And they flow it all the time. It just may be enough.

Isn't the right amount of heat exchange the most possible? I've never understood the physics behind the "don't flow too much or it won't cool." Yes, more flow means it spends less time in the radiator, but it also means it spends less time getting hot in the engine.

I haven't seen a flow chart for the electric water pump compared to stock, but if the engine is putting more power to the wheels with an electric pump, to me that means less energy is used to pump water. I would assume that the pumps are fairly close in efficiency, so at high engine RPM's the stocker is flowing more water than the EWP.

Since you have it already on the car, I am curious how it will work out. But, I think for sustained high RPM use, I think the stocker is a better choice (or another mechanically driven pump). For drag racing or auto-x, the short runs with the ability to run the pump with the engine off might make the electric a better choice.

This post has been edited by Mojave: Aug 25 2012, 11:56 PM