The fuel pressure's positive - use a positive pressure gauge. Regarding
the reg setting, unless the reg is a series of venturi's (which would be
$$$), the regulator is probably just a series of orifices (orifi?) that
have an associated pressure drop as a function of flow, with no pressure
recovery as in a venturi. Unless the flow is choked (like in a venturi),
the pressure downstream of the regulator will vary depending on the fuel
pump pressure upstream. Without a gauge you'll have to use trial and
error.
Ron
----------
> From: Dave Brown <davebrown1@earthlink.net>
> To: alan b fisher <hello39@idt.net>
> Cc: Robert <robert@woozy.com>; spridgets@autox.team.net
> Subject: Re: Fuel Pressure Regulator Settings
> Date: Monday, December 01, 1997 8:23 PM
>
> Why not use a vacuum gauge to measure the pressure in the line for each
> setting?
>
> Dave
>
> alan b fisher wrote:
>
> > Robert wrote:
> >
> > Rob,
> > Most webers seem to do well with around 3 lbs of pressure.
> > I'm not sure what the #1 setting gives u in ref to pressures but
> > if u can find out or there is a chart for pressures=settings
> > 3 lbs should be just fine
> > Alan
> >
> > > Hi,
> > >
> > > I just got a NAPA fuel pressure regulator to use in conjunction
> > > with the Weber DGV carb on my 1275 cc Midget. Is anyone familiar
> > > with what the setting should be for this setup? The instructions say
> > > to use setting #1 for all 4 cylinder cars under 80 hp. Is this the
> > > correct
> > > setting?
> > >
> > > Thanks,
> > >
> > > Robert Weeks
> > > Durham NC
> > > 1969 Midget
> > > http://www.woozy.com/midget/
>
>
>
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