DLMAssoc@aol.com wrote:
> >This is why you install an oil pressure cutoff switch in the line that
> >powers the fuel pump.
>
> Please expain this further. My TR4 has an electric pump, but is wired
> directly off the car's wiring harness. I like the idea of it automatically
> shutting off when the engine dies, but how do you get it started without
> cranking the engine to build oil pressure first? Or will the "cutoff" switch
> allow juice to flow before the engine builds pressure?
Don,
The kit that we installed had a relay box to power the fuel pump, was
powered by its own separate set of wires from the relay to the pump itself.
The relay box mounted in the engine bay, and had a wire that connected to
the oil pressure sending unit, and others that went to the ignition. It
takes hardly any pressure at all to trigger the relay, because the pump
kicks in almost immediately after the key is turned, maybe one stroke worth.
I wouldn't want an electric pump without a pressure switch. I didn't
realize that anyone would sell them without until this thread came up!
(BTW, e-mail me with the company that did you your disservice, if you would)
Michael Turley
'67 Spitfire Mk2 in pieces through the winter, or longer :(
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