[Healeys] Electric water pumps

[Alan Seigrist]

Hi Bob -

I assume you are using an electric pump in tandem with the mechanical pump?

Best,

Alan

On Tue, 30 Aug 2022 at 12:32 AM, <rfbegani at gmail.com> wrote:

> 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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