[Healeys] Electric water pumps

[Bob Haskell]

Davies,Craig recommends disabling the mechanical pump by removing the 
impeller.  See the attached installation instructions - covers just the 
water pump, not the controller or electric fan.

Cheers,

Bob Haskell
Austin Healey 3000 BN7/BT7 registrar

On 8/29/22 8:22 PM, Alan Seigrist wrote:
> 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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