[Healeys] Electric water pumps

[rfbegani at gmail.com]

Guys,

I have tested the temperature of the water at the hose coming to the radiator and at the bottom going up to the inlet.  While I do not have exact information because I am not in Florida, I can assure you there is a very nice differential between the hot incoming and the much cooler out going of the radiator.  Other on this list who are using the Davis water pump are considering removing the fan altogether. I have removed my Texas Fan as it is no longer needed.  Try it you will like it.  Remember modern automobiles have electric pump moving water to and from the radiator as they were designed without a fan/water pump.

Summit Racing has the water pumps in stock.

Bob Begani

-----Original Message-----
From: Healeys <healeys-bounces at autox.team.net> On Behalf Of Bob Haskell via Healeys
Sent: Monday, August 29, 2022 6:05 AM
To: Alan Seigrist <healey.nut at gmail.com>
Cc: Healey List <healeys at autox.team.net>
Subject: Re: [Healeys] Electric water pumps

Alan,

I have the same concern.  I sent their US rep an email asking about that.  Seems like there ought to be a temperature sensor in the lower radiator hose to look at the temperature drop between radiator in/out. The temperature drop would be affected by (electric) fan speed and the flow rate.

They sell different size pumps.  Based on their table, the EWP115 (115liters/minute maximum) is what they recommend for engines between
2.0 and 3.5 liters.  Anyone know what the flow rate is for a stock water pump?

Cheers,

Bob Haskell
Austin Healey 3000 BN7/BT7 registrar

On 8/28/22 11:56 PM, Alan Seigrist wrote:
> Hi Bob -
>
> Just remember that the cooling system is meant to work in balance, so 
> increasing the water flow through the system often may not actually 
> reduce temperatures, since the water must flow through the radiator 
> slowly enough to cool down.  If you push water through the radiator 
> too fast, you might just end up recycling hot water back into a hot 
> engine.  So if you put a pump on the car, I would put a supplementary 
> tandem pump, not one that is meant to work alone.
>
> Best,
>
> Alan
>
>
> On Mon, Aug 29, 2022 at 6:43 AM Bob Haskell <rchaskell at earthlink.net>
> wrote:
>
>     Anyone fitted an electric water pump to replace the mechanical
>     pump?  One can go whole hog with an electric fan, a temperature
>     sensor in the upper radiator hose and a controller.  Takes the
>     place of the thermostat and the impeller on the mechanical pump.
>
>     https://daviescraig.com/electric-water-pumps
>
>     A bit beyond a Pertronix, but still reversible.
>
>     -- 
>     Cheers,
>
>     Bob Haskell
>     Austin Healey 3000 BN7/BT7 registrar
>
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