Terry L. Thompson wrote:
>I've been debating where to mount my electric fuel pump,
>and one of the suggestions is that the pump should be below
>the fuel tank (when the car is level) so that the pump is
>gravity fed, and has less work to do.
>The two places I've considered are A) in the trunk near
>the gas tank which is some distance from the carb or B)on
>the frame perhaps next to the starter, which puts it very
>close to road debris from the tires.
You are better off mounting the pump near the gas tank.
This will eliminate vapor lock, as the pump will always have
fuel to pump. If any of the gas vaporizes in the lines near
or at the car, the liquid fuel will push it into the carb where
it will be vented.
As to worring about fuel shut off, I think this has been
over sold in the newer cars. The MGBs had electric fuel pumps
and I don't remember any fancy circuits or such to turn them
on and off.
However, if you are really worried about that, you could
design a circuit that would look for pluses from the points
(like the newer cars) and as long as there are pulses the pump
would run. If the eng stalled, or wrecked, and no pulses for
several seconds, the circuit would turn off power to the pump.
John T. Blair email@example.com
Va. Beach, Va.
>If anyone has a decent mounting point, away from a hot spot
>and interference of moving parts, I'd like to know, so I
>only have to re-run the fuel line once.
>At 08:43 AM 3/7/00 -0500, you wrote:
>>I also have an electric pump. The one thing that
>>bothers me about it is the chance of it continuing to
>>pump in the event of a crash causing a fire hazard. How
>>do other list members deal with this "problem". Other
>>than that I love the reliability of it. Also where is
>>the best place to mount. Mine is on the firewall just
>>in front of the driverside under the bonnet.
>> Dave Gebhard
>> 1977 Spitfire...coming back to life
>>----- Original Message -----
>>From: Dan Buettner <firstname.lastname@example.org>
>>To: Patrick Baize <email@example.com>
>>Sent: Monday, March 06, 2000 9:07 PM
>>Subject: Re: 74 Is Alive!