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Re: Fuel pump - ultimate solution

To: "simon hurley" <simonsensis@hotmail.com>, "MG List" <mgs@autox.team.net>
Subject: Re: Fuel pump - ultimate solution
From: Max Heim <mvheim@studiolimage.com>
Date: Mon, 17 Jul 2000 10:29:09 -0700
Hmm, in looking at the location of the fuel pump attachment point, I 
wonder if the pump would have fit in there with the dual carburetor 
manifolds, so maybe it was a packaging issue. But then, electrical fuel 
pumps are generally considered superior in that the flow rate is not 
dependent on engine rpm, and so are preferred in high performance 
applications. In the Land Rover reliability was probably the desired 
feature (and engine compartment space was more generous). There may also 
have been a heat issue with routing the fuel lines beneath the exhaust 
manifold.

Geoffrey Gallaway had this to say:

>On the topic of fuel pumps I have been wondering why MG used electrical
>pumps on their cars. My fathers 70 Land Rover 88 has a mechanical pump
>which seems to work flawlessly. Is this a cost issue or just a unique
>"feature" of MG's?
>
>Geoff
>
>This one time, at band camp, Charles D. Sorkin wrote:
>
>> Jim said:
>> 
>> >First a word about the solid state SU pump from BV- my first one has
>> >over 80,000 miles on it & is still going strong. The one I bought a year
>> >ago for my other MG lasted only about 6 months, so quality control of
>> >components in recent times seems to be a problem.
>> >
>> >Ultimate solution is to add a second fuel pump in line, such as the
>> >noisy square lump (Fascut, Purolator, etc). This bolts easily to the
>> >battery cage, more or less in line with the fuel pipe routing. I added a
>> >on/off/on switch out of sight under the dash & ran a second wire to the
>> >new pump. When my new solid state pump started to crapp out on me,
>> >throwing the switch was a lifesaver (literally @ 70 mph in heavy
>> >traffic). Now that the solid state has been replaced with a stock points
>> >unit, I still feel more comfortable knowing I have a back up.
>> >
>> >In the center position, the on/off/on switch is also a theft deterrent,
>> >as a joy rider would only get about 1/4 mile before running out of gas.
>> 
>> How would this work on a spridget?  Meaning, where would you put the pump?)
>> If the points fail, how easy is it for the auxiliary pump to suck fuel
>> through the SU pump?  (I don't think it would work all that well, since
>> there is nothing to keep the pump diaphragm open.)  Seems to me that such a
>> setup might work better in parallel, instead of in series.
>> 
>> Regards,
>> 
>> Charles
>> '74 Midget
>> '68 Sprite
>> cdsorkin@ix.netcom.com
>> Bloomfield, NJ
>> "How about we duck inside for a Hen?"
>> 
>> 
>
>-- 
>Geoffrey Gallaway || Programming the X Window System is like trying to find 
>geoffeg@sloth.org || the square root of pi using Roman numerals.
>D e v o r z h u n ||                           -- Anonymous
>
>


--

Max Heim
'66 MGB GHN3L76149
If you're near Mountain View, CA,
it's the red one with the silver bootlid.


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