[Healeys] fuel pump
John Harper
ah at jharper.demon.co.uk
Mon Aug 18 09:58:34 MDT 2008
Ken
This is more or less the same as I have on my 100 that was factory
converted to take the rare 15 gallon fuel tank when young. This has the
two outlet pipes as you describe and two normal long body SU electric
pumps.
However although this was changed by a previous owner there are two
period on/off toggle switches. I can see this from an old photograph. I
have the two switches back as they were.
So long as I keep more than about 3 gallons in the tank I have
resilience against pump failure. I normally run with the pump fed from
the higher pick-up pipe so that I have a reserve.
In theory I can turn both pumps on and get more flow but I have never
found this necessary.
One thing that is somewhat of a nuisance is that a standard sender unit
is fitted and because of the extra tank height which is about 1 1/4" the
gauge reads empty when I still have fuel available. I could lengthen the
float arm but then the set up would not be as the factory fitted.
Regards
> Just somewhat related info on the 100S method of dual fuel pumps: They
>were controled by a push button switch (very rare) that switched between
>the two pumps. No off position. Each pump had its own pump intake tube.
>One positioned a little higher than the other inside the tank. That way
>the lower one was the "reserve".
>
>Ken Freese
>100S Registrar
--
John Harper
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