I would like to install a Davies Craig EWP80 (Electronic Water pump) on my tube frame racecar. It would replace the stock water pump to help reduce parasitic losses and save a little weight.
I would need an adaptor that would connect to the opening on the block where the the water pump connects to. Does anyone knows where I could get an adaptor or at least something that is close which I could modify rather than making one from scratch.

Here is a photo of the location, The standard coolant adaptors are in the photo too but I don't see a way to modify those to make them work.

 

The stock waterpump only has the disadvantage of working at all times. You won't get any noticeable gain from using an electric one. There's a reason not even the new Honda engines use electric water pumps.

 

I'm going that rout as there are small but not insignificant gains to be had especially at higher RMP. I am also switching to a smaller alternator. Doing both these mods will allow me to remove the tensioner, idler pulley and water pump from the serpentine belt and just have an alternator where the AC compressor usually sits. This will drop over 15lbs which is >1% of the total weight of my car.

 

Assuming stock weight here (yours sounds stripped, and therefore lighter), but regardless, -15lbs is is an 0.5% difference.

You won't be able to feel that difference and the expense will be at the cost of reliability, but everyone calculates their own ROI so good luck!

If you do this, please post detailed photos.

 

I am at the pointy end of what you can do to the car to make improvements. This will only cost me about $250 and I'll gain a few extra HP and 15lbs weight loss is a pretty good ROI in my opinion.

I built my car completely from scratch, it is Nationally competitive for Autocross and weighs 1450lbs with a full tank of fuel. Another thing I did was remove 5th and 6th gears from the transmission to save weight and reduce drivetrain losses.

 

There is a decent amount of metal there, you could thread the hole and make a custom hose attachment.

 

Not fair, I was assuming you were actually calculating the ROI on an actual s2000, not that custom beast of yours... Good luck with the build, post updates!

 

"...on my tube frame racecar"

 

Plot twist, driver weighs 250 pounds.

 

lol, 200lbs. When I start the day I'm at 1650lbs with about 30lbs of fuel (5Gl)