Fuel pump questions
James Tidwell
bigsky at jps.net
Tue Dec 9 08:35:15 GMT 1997
At 11:11 AM 12/8/97 -0800, you wrote:
>If your booster pump is a positive displacement one the in-tank
>one will have a hellva time pushing past it. However if it is a vane
>type, it will be a restriction, but the in-tank can pump past it.
> If you want to run the stock pump, you can run a Boost A Pump from
>I beleive Kenne-Bell, and have a higher voltage sent to the pump on
>demand.
> On the Turbo Buicks they rehash the in tank sender to run two fuel
>pumps, with the second one on-demand.
> Use a in-line pump, but I'd use a y-fittine before, and after it
>with a low pressure cracking check valve. That way it would just
>bypass the second pump (thru the check valve) when not in use.
> For any custom EFI pumbling I use Stainless Steel AN Lines (with the
>proper fittings). You'd be amazed who much fuel gets pumped in 5 secs
>with an EFI pump.
> Like anything else if you do something wrong, you might have a tank
>explosion, just duplicate what the EOM manner of doing things and
>there should be no problem. There are "millions" of in tank pumps
>in use today, and if they were unsafe uncle (big brother) ralph, and
>(big sis) joan would be all over the news with these horror stories
>of poor design. Interject names Nader, Claybrook as neseccary
>Bruce nacelp at bright.net
>
>
In theory, the vapor in a car's gas tank cannot approach an explosive
mixture while the tank is intact and yes, nekkid sparks are present in the
tanks with in tank pumps. I haven't seen to many explode since the Pintos
left the scene. Of course TWA 800 (correct flight number?) may prove that
theory wrong.
James Tidwell
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