Electric water pump

[serialk11r]

Originally Posted by t vago

I can also say that when I put a 25% UDP on my Dakota's engine back in 2011, I did not notice any real difference in fuel economy.

Then again, I did not (and do not) really rev the engine that much past 2000 RPM for any real length of time.

Well yea, if your engine has a smaller rev range then a mechanical pump is naturally going to be more efficient. Smaller engines that rev 2500-3000 on the freeway have water pumps sucking down much more power.

[Mustang Dave]

Originally Posted by t vago

I can also say that when I put a 25% UDP on my Dakota's engine back in 2011, I did not notice any real difference in fuel economy.

Then again, I did not (and do not) really rev the engine that much past 2000 RPM for any real length of time.

I installed a 25% UDP on my Mustang's 4.0 liter Cologne V-6 last May. I rarely rev that engine over 2000 RPM, except while accelerating. That mod gave me about 1 MPG. YMMV.

[dwtaylorpdx]

I helped with a race car for a couple years that we converted to battery fired and dropped the alternator to save weight and power. The car was a S2000 (Scca road racing) and uses a 2.0 ford motor (Old pinto engine...) Changes were made carefully and logged on the car because the class is so restricted on engine mods. Its all about ounces, aero and ingenuity...

The electric pump did a few things, first it allowed us to run the engine head temp exactly at the highest power yield, it allowed us to ditch almost 30 lbs (Alternator, shorter belt, water pump, and changed the plumbing to a much more efficient layout which helped aero. ) The pump we used was from another vendor but looked exactly like the davies ewp115.

The water pump conversion gave us about 1/2 second a lap. HUGE in this class.. We also ran a very small OddeseyBattery that we had a quick change for so we kept 2 on the charger and one in the car.

Getting rid of spinning weight on the engine for us was a big deal for extracting the most power, which should translate to lower fuel consumption... So we could run less weight in the tank..

[sidecar]

Prius have an electric water pump, as they do electric air con
They have no accessory drive belt so it has to be

check it out

https://www.youtube.com/watch?v=1ojNID2jDz4

[diver]

Originally Posted by Sunaj

I assume one of the kits on his website.. just came across this one..

Electric Water Pump EWP80

I use one on my V6 4.3 chevy trike. Also use their controller. I luv it I plumbed it all in 1 inch heater hose . I also used one to cool a 555 ci supercharged motor for my drag car. they are awesome