>>>Trevor Boicey said:
> Barry H. Adams wrote:
> > I'm considering replacing the stock fuel pump on my 74 Spitfire (1500) with
> > an electrical pump.
> > What should I use for a switched power source?
>
> ...a switched power source! Other than a fuse, nothing
> fancy. Take a lead off of the fusebox, make sure it's
> on the fused side (goes off when fuse is pulled out) and
> that it's only on when ignition is on. Run a line back
> so as not to disrupt the wiring harness, and go with
> it.
I don't recommend this. See below...
> One point worth mentioning is that you might want to
> acquire a rollover switch. You would want the power to
> that fuel pump shut off in the event of a rollover.
I wired the Facet pump on my TR6 through a switch that shuts off power if the
oil
pressure drops to zero. THis way, if there's a crash and the engine stops, so
does the fuel pump, regardless of the position of the ignition.
I think this is required for electric pumps by most racing comittees.
Certainly Pegasus has the oil-pressure switches in their catalog.
--berry
Berry Kercheval :: kerch@parc.xerox.com :: Xerox Palo Alto Research Center
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