..... This weekend's previously scheduled 2-day bracket race @ Bradenton was postponed due to the weather forecast . So , to get my racecar "fix" for the weekend ... I decided to upgrade the cooling system with an electric remote water pump in an effort to promote faster cool-downs between rounds . I decided on a Davies Craig EWP 150 rated at 39.6 gallons per minute . To make the install a little less complicated , I opted to keep the engines mechanical water pump in place (less the impeller) to keep the serpentine belt running in the same circles as it was . The Davies Craig pump is fairly compact and was installed at the radiator lower outlet . I was disappointed by the cumbersome hose configuration but it was necessary to make some splices to connect things up . The factory lower hose is 1.25" diameter except at the water pump ... the remote pump comes with 1.5" nipples ... same as the water pump inlet nipple . I drilled 4 eighth inch holes in the thermostat flange (D-C recommends 2) and removed all of the blades from the engine water pump's impeller . The engine pump is now an idler pulley and water distribution device ... The only part that I overlooked was the abolishment of the stock belt tensioner (too much plumbing work) ... so now I need to make an alternator/ belt tensioner to tighten up the serpentine ... I will report back with the results of this mod .....

 

Nice!

 

Definitely keep us posted...

 

Nice, any particular reason for the turbine style vs an impeller type inline? Just curious is all.

 

..... Just my research on size , flow , price , and positive reviews from other racers .....

 

I dig it. Innovative. Thoughtful.

 

Now you can tell people your car is turbocharged! Not to say my setup is any better than yours, but I'm running a Meziere in place of the stock pump. Like yours, this can be turned on in the staging lanes with the motor off for quick cool downs. It takes less than a minute to cool the motor down 20 degrees with the fan running. Good job Robert.

 

Interesting

I had an electric on my car for a while, back when the engine was stock

When I did a road course, even with a stock engine it couldn't keep up.

 

..... Turbocharger ... spools up fast ! ...

 

Does it have the whine?

 

Turned your WP into a water manifold, I'd be temped to completely gut it, press out the shaft and get rid of the pulley, then weld/epoxy the front shaft hole shut. Since it's a drag car, I'm betting you just have an alt and no power steering. If so I'd do the mod most do to when they delete AC, tensioner & the air pump to make the alt adjustable n tension the belt that way. Only run a crank pulley and alt.

I want to use a remote pump on my fox but I'd but or make fittings so I could access the timing cover easy to test degree changes. I'd prob use the bolt-on remote pump type or have it welded to the radiator. Still that's a pretty good budget mod.

 

..... I wanted to keep the pulley in place for the serpentine belt ... my car still has power steering and 2 alternators .....

 

..... Driveway update ... I finished my adjustable upper alternator bracket and fired the car up ... it didn't take long to feel some heat in the upper radiator hose , I guess the 4 -1/8" holes in the thermostat pass more water than I would have thought ... the BEST part was the after shut-off cooldown ... this is exactly why I put an electric water pump on in the first place ... it took about 3 1/2 minutes to cool the engine from 170 to 140 with the fan on low speed ... should happen much quicker with the fan on high speed ... the true test should happen this weekend at either Gainesville or Imokkallee ... depends on which has the better weather forecast ... Gainesville is 3hrs North and Imokkallee is 3hrs the other way ! .....

 

..... It makes a faint buzzing sound ... not turbo impressive at all ... no one will notice or even hear it with the engine running ... I need to find one of those 50's Wolf Whistles except that I don't have much vacuum at low engine speeds .....

 

Running a dual voltage setup? Also volvo electric PS pumps are a popular mod. I wanna put one in my C4 someday, shut it off for the pass and turn it back on after.

 

You're running the taurus fan as your dual speed right?

 

..... All 12volts ... passenger side alternator charges a small AGM battery that powers the Holley ECM ... Looking for consistent voltage to equal consistent performance ... the drivers side alternator provides the juice for everything else ... I have a manual steering rack , the cost of new inner and outer tie rods is currently interfering with its installation ... I thought I could use my existing tie rods but the rack was made for a newer vette and my inners are female thread and so is the rack ... the electric P.S. pump is fascinating but a little too complicated for a drag car ... trying to maintain the K.I.S.S. principle .....

 

..... Yessir ... the Taurus low speed is about the same as the stock fan while high speed is estimated at over 4,000 CFM and it sounds like it ! ... high speed will pull the radiator down to ambient in less than a minute ... starting amp draw flashes to 60 and while running , it takes around 25amps .....

 

I have installed the same pump in a different location.

https://www.corvetteforum.com/forums...post1604921974



I made some small tests with the water pump.
First 100% duty and that emptied the radiator tank quickly and I measured about 2 liters ( 0.5 gallons ).
Second is 10% duty and I measured about 1 liter ( 0.25 gallons ).

 

It'll do 4000 cfm free air. (4200 actually) I checked it. I think it was slightly less than stock through the radiator on low and about 300 cfm more on high. But I had some voltage drop when measuring so it could've been more. What I can say is despite the flow numbers indicating marginal improvement, the real world testing indicates otherwise. I think you told me to try it out, that's why I asked. So thanks again!

Oh, and high sounds like a fighter about to take off, it's nuts lol. That only comes on when A/C is requested, otherwise is unnecessary.