I have had two pumps--a "main" SU and a "standby" FACET--mounted in series
for about five years. They are wired so that I can switch between them or
turn both off via an "on-off-in" toggle switch mounted behind the driver's
seat. The car runs fine on either pump though the SU is a bit quieter.
Best--Michael Oritt
-------------------------------
On Fri, Apr 15, 2011 at 10:47 PM, richard mayor <mayorrichard@hotmail.com>wrote:
> Keith,
> I'm not sure if running them in series is the best way to go.
> Before I went to a single Carter fuel pump in my race car, I used two SU
> fuel
> pumps plumbed in parallel for many many years, without any problems. I had
> a
> separate toggle switch for each pump.
> My thinking is that if they are in series, you are pushing fuel through one
> of
> the fuel pumps that is not functioning. If you have both pumps switched on,
> then they are perhaps making to much pressure. I'm not an expert in this
> area,
> but parallel plumbing makes more sense to me.
>
>
> Richard Mayor
> BN7L-466 Vintage Racer
> Portland, Oregon
>
>
>
>
> > Date: Sat, 16 Apr 2011 09:12:45 +1000
> > From: ktee20@gmail.com
> > To: healeys@autox.team.net
> > Subject: [Healeys] Dual fuel pumps
> >
> > I propose fitting a secondary pump to a BN2 (neg earth) using an SU +
> > Fedtro with a changeover switch
> > The simple option is to run them in series . Is there any reason not to
> do
> > this.ie loss of pressure etc
> >
> > Keith Taylor
> > WAMBERAL OZ
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