I'm not trying to dispute/support those posted numbers but I believe you may have misinterpreted that web site.

The listed 50.32 liters/sec was not reported as measured from the Davies Pump. It was an effort to show how much water the 38mm test hose would flow on its own with no pumping force applied other than gravity. The Davies pump flowed ~ 80 liters/minute.

NewbernD - Yep, your right. With it being listed right under the Davis pump and with the title being in smaller print it looked like a subcategory. Especially since all pump specs by manufactorers are free flow thru just a short hose. To me it looked like they were trying to do a free flow test for the Davis pump (which would make sence for them to do so since thats how the pumps are speced). I was wondering why they didnt do a free flow test on the other two.

Interesting findings anyway. I wish I could find some more test data to back it up (or not back it up which ever the case might be).

On a side note I talked to someone that used a Davis pump and liked it real well but he eventually switched cause the plastic case split in half. He now runs a Mezeire because of the metal case. He says they both cooled great.

After all the talk about the Craig davies pump , I still think the Mezierre 336 and 337 are better , higher flowing and more durable pumps . I am definately not putting a "plastic" pump on my motor , do you guys remember the horror stories linked to the "plastic" AST ??.
By the way according to the data below , the pump flows " 20 L to 80L (300GPH to 1300GPH)" , is it me or is something wrong with the math ?? , 4L = 1gal , therefore 20L/4=5 GAL not 300GAL??.


Technical Specifications:

Operating Voltage
4V DC to 14.5V DC

Maximum Current
7.5A

Flowrate
20L to 80L/min, (300 gal to 1300 gal/hr) 13.5V DC

Operating Temperature
-20C to 130C (-5 F to 270 F)

Pump Design
Clockwise centrifugal with volute chamber

Motor Life
2000 hrs continuous at 80 C (180 F) and 12V DC

Pump Weight
900 grams (2lb)

Pump Material
Nylon 66, 30% glass filled

Maximum Pressure
tested to 50 psi

Fits Hoses Sizes
32mm to 50mm (1-1/4" to 2")

5 gal/min * 60 min/hr = 300 gal/hr

Shit ! . I didn't notice that it was in minutes, thanks for the correction. Anyway , here are the specs for the Miezere , I think its a better unit . They also promise a longer life of 10,000 hrs as compared to the davies Craig"s 2000.

Vendor Meziere Enterprises, Inc.
Product Line Meziere Import Electric Water Pumps
Universal
Pump Material Aluminum
Pump Finish Black anodized
Flow Rate @ 12 Volts (gpm) 55 GPM (330LH)
Flow Rate @ 16 Volts (gpm) (Not Specified)
Hose Adapter Required ? Yes
Hose Adapter Included ? No
Hose Adapter Thread Size 1 in. NPT
Inlet Hose Size (in) (Not Specified)
Inlet Hose Attachment (Not Specified)
Overall Depth (in) (Not Specified)
Amperage Drawn 9-11
Weight (lbs) 6.2
Quantity Sold individually.
Notes : With single outlet.

What kind of Warranty do they offer? The Davies Craig is a 2 year warranty.

I'll contact my local dealer and post it.

hey Glemmers - what kind of temps were getting on track with your setup?

The Meziere is a better pump, IF you run it at full speed. It is not meant to be run at anything but full speed. Where as the Craig Davies can be run at any speed with the controller. The Meziere pump is meant for racing where you only need it to run full speed. If you have a street setup that can compensate for this pump, then I would go with it. Otherwise the Craig Davies pump and controller is the way to go.

I have been trying to sort out problems with electric water pumps for almost two years now (while my car is down). I have called most all pump manufactures, and spoke extensively with all of them. So believe me when I say the Craig Davies pump and controller is the best option.

Why is that? Sounds like from your post you think the Meziere is the better pump, you just need to install it correctly with a thermostat, ect. I'm getting the Meziere and using it with a thermostate, filler neck, ect ect so the pump will be running a full speed but still control engine temps with a mech thermostat. I should be done with it in a couple weeks. The car wont be finished and running for a while but I'll have the elec wp conversion done. I'll take a few pics. If you think you'd be interested in the stuff to convert one over let me know. I'm thinking about selling it since there isnt a decent conversion kit out there (for a street car).

I have spoken to Miezere and they say their pumps can run on the street without a problem , if the M. pump puts out 55gpm@12V then I believe I'll have more than enough flow at 13 - 13.6 V . I , like Stephen , cant see the need for stripping down , moving the alternator and eliminating the thermostat , if using the adapter was simpler to do then maybe I would have gone that way.
I plan on keeping my thermostat housing , the thermostat , and everything thats associated with it . This way the electric pump will work just as the mechanical did but without the disadvantages. I even read about a guy who was using the D.C, pump until the housing SPLIT !! , he then switched to a Mi. and is very happy with it .
DWood , what kind of problems are you having ?, do you care to let us know ??.

Here are the two Miezere adapters. They even fit 11A's! :D KG parts is also NPT.
http://img16.exs.cx/img16/5189/adapter7td.jpg

Sorry for the horrible pictures, but here's the WP91 block adapter and what it looks like with the pump removed.
http://img107.exs.cx/img107/686/im0007297co.th.jpg

http://img107.exs.cx/img107/2072/im0007305jd.th.jpg

Any updates yet ?, anyone complete an install ?.

Is there any horse power increase by using and electric pump?? i am thinking of running this set up on my PP 12a thinking it would rob less power in the high rpms then a standard pump

I decided to go with the Stewart Components water pump. I just received it in the mail and all I can say is MAN this thing is a nice high quality piece!!!!

http://www.stewartcomponents.net/Mer...Code=ElectPump


BTW - Its pretty much the same price as the Meziere cause you end up needing to buy hose ends for the Meziere and when you add that in its about $400, the Stuart has hose ends built in.....if you want AN they can put that on it as well.

Stephen, After looking at your pump, I'm starting to think about what I would need for my 20B.. I'm now thinking electric pump. That stewart elect. pump seems to be very well made.

Are you using the EWP in series with your stock pump?

I've got the controller and the block adapter ready to go, just waiting for my lines, fittings and pump to come in. Most of it should be here later this week. I'm also working on the alternator relocation bracket. I'll try to get some pictures up soon. :)

Does anyone know who sells AN to coolant hose fittings? I found some online a few weeks ago, but forgot to bookmark it! :(

i can finally comment on the DC EWP now as i have used one,

we did around 400miles on the weekend in moderate temp here in AU, with the DC EWP and controller the car never went over 84deg C, this is with a 13b bridge port turbo, in stop start traffic,

when you turn the pump and fan on with out the engine running it pulls out 2deg every 10sec

Dale

The fact that you can use the pump to circulate the coolant after the car has shut down is a big plus for me. Should help with the heat soak.

it is a big plus, espically on the dyno,

the DC pump works a treat and i highly reccomend them, and for around $200aud they are cheap!

Dale

Mezeire has them

The DC pump flows good, the only reason I didnt use it is because of its plastic casing. I know someone that had thiers come apart and drop all the coolant faster than you can say "plastic sucks" lol.

Other than that, the pump is small, light, and flows good. If the plastic tanks doesnt scare you the DC pump is a good way to go.

I went with the Stewart pump, its all billit alum and its NICE NICE NICE.

Stephen