Lawrie:
That's why there are experts like you around! :)
I was talking off the top of my head and am quite happy to be contradicted.
You have much more experience than I and I happily tug my forelock in your
direction.
Kelvin.
> -----Original Message-----
> From: Lawrie Alexander [mailto:Lawrie@britcars.com]
> Sent: Monday, February 01, 1999 5:28 PM
> To: Dodd, Kelvin
> Subject: Re: Fuel pump question
>
>
> Kelvin........(Note this is not copied to the list - yet!)
>
> Do you have documentation to back up that statement? It has been my
> experience that anything over 3-1/2 psi is likely to cause
> flooding in SUs
> and Z-Ss. I always say that the fuel pressure should be 2-1/2
> to 3-1/2 psi
> for best results. I'm willing to be corrected, though, if SU
> or Z-S ever
> stated that 5 psi was acceptable.
>
> Lawrie
> -----Original Message-----
> From: Dodd, Kelvin <doddk@mossmotors.com>
> To: Jones, Mark <MJones@ngl.ca>
> Cc: mgs@autox.team.net <mgs@autox.team.net>
> Date: Monday, February 01, 1999 10:23 AM
> Subject: RE: Fuel pump question
>
>
> >Mark:
> >
> > The fuel pressure must be somewhere in the 3-5 psi range or you will
> >lift the carb. inlet valves.
> >
> > Most pumps prefer to push fuel, not pull. The pump is mounted as
> >low and close to the tank as possible to allow a gravity
> feed to the inlet.
> >Earlier vehicles such as T's and M Minors run a low pressure
> suction pump
> on
> >the firewall, but have a much lower flow rate than the later cars.
> >
> >Hope this helps.
> >
> >Kelvin Dodd (so many cars so little time)
> >58 MGA X2 in bits
> >58 MG Magnette ZB
> >65 MGB Works Replica
> >66 Jaguar 3.8S
> >68 MGB GT V6
> >73 MGB GT
> >78 MGB V8 in process
> >
> >
> >> -----Original Message-----
> >> From: Jones, Mark [mailto:MJones@ngl.ca]
> >> Sent: Monday, February 01, 1999 7:54 AM
> >> To: 'mgs@autox.team.net'
> >> Subject: Fuel pump question
> >>
> >>
> >> I posted a question earlier to this group concerning the SU
> >> AUF204 fuel pump
> >> I found on my car. It turns out this is a Midget fuel pump
> >> (thanks for all
> >> the responses) and is probably unable to provide enough fuel
> >> under "spirited
> >> driving condition".
> >>
> >> I know have a few more questions:
> >>
> >> - If I decide not to use a proper SU what do I have to be
> >> concerned about
> >> when using a generic replacement pump? Does too high a
> >> pumping pressure
> >> affect the carburetors?
> >>
> >> - Why was the fuel pump put under the car rather than in the engine
> >> compartment? Could it be repositioned to the engine
> compartment? I'm
> >> guessing that the answer here is that you would be concerned
> >> about vapour
> >> looking of the pump but is there any other reason?
> >>
> >> Any help is greatly appreciated. Gotta love the list!
> >>
> >> Mark
> >> 73 B GT
> >>
> >
>
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