[Diy_efi] VW Surge Tank

[clair.davis at charter.net]

Yep, that's what I meant by lift pump... basically any low-pressure, decent
volume pump to feed the surge tank.  The surge tank then provides an
always-full supply of fuel to the pressure pump.  Most of the time, the
return line from the fuel rail feeds back to the surge tank, so that even
when the lift pump is drawing air, the pressure pump is recycling fuel
keeping the surge tank supply full.
Since the lift pump operates under very low pressure (volume is more
important than pressure) you can use any garden-variety filter to clean the
fuel before it hits the surge tank.  Ideally then, you'd never have to
change out the other "filter".

Clair


----- Original Message ----- 
From: "Chris Carson" <fastcarson at prodigy.net>
To: "A list for Do-It-Yourself EFI" <diy_efi at diy-efi.org>
Sent: Thursday, July 01, 2004 8:20 PM
Subject: Re: [Diy_efi] VW Surge Tank


> Oh, you mean a lift pump by one in the gas tank, before the surge tank?
I'm
> going to be using my stock mechanical fuel pump to draw fuel to this surge
> tank, which will be underhood, with the Ford inline pump plumbed after it.
> Does this sound like a sensible setup?
>
> Chris
> ----- Original Message -----
> From: <clair.davis at charter.net>
> To: "A list for Do-It-Yourself EFI" <diy_efi at diy-efi.org>
> Sent: Thursday, July 01, 2004 8:25 PM
> Subject: Re: [Diy_efi] VW Surge Tank
>
>
> > Is this the little "deck of cards" sized part from the Rabbit/Sirocco
(sp)
> > cars?  Do you have a PN or picture of the thing?  The one I've seen from
a
> > link in a message late last year or early this year looked like it was
> > probably intended for use with a lift pump, but maybe the Ford pump
could
> > draw through it OK.  As the filter clogs, though, it will be harder and
> > harder for the pressure pump to do it's job.  If you change it out
> > frequently (12K miles), it might just be OK.
> >
> > Clair
> >
> > ----- Original Message -----
> > From: "Chris Carson" <fastcarson at prodigy.net>
> > To: "A list for Do-It-Yourself EFI" <diy_efi at diy-efi.org>
> > Sent: Thursday, July 01, 2004 3:18 PM
> > Subject: [Diy_efi] VW Surge Tank
> >
> >
> > Hi list,
> > I just ordered up a VW surge tank from the local dealer. To my suprise,
> one
> > was already in stock. It was listed as "FUEL FILTER." It got me
thinking,
> > that if I'm running at MPFI pressure, could I be able to use this tank
AS
> my
> > fuel filter?
> > Is there anything bad about having an inline Ford fuel pump _suck_
through
> > the fuel filter?
> > Does anyone know how to actually plumb this sucker?
> > And if it's a fuel filter, could I have spent less than $40 by getting
one
> > from Autozone? :)
> > Chris
> >
> >
> >
>
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