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> > My Crap Brazillian stamped out modern pump will pump 2.5PSI but
when Im on
> > the gas heavily it will lose a pound or so and regain it when I
let
> off....
> >
> > SO... the bloody thing cant keep up!
Keith, when I tested my fuel pressure it was 3.5 at idle, and my
buddy said it didn't drop at WOT or high RPM. I beleive this is
original pump, but might have different spring rebuild.
I also got an NOS single carb pump rebuild kit today (oops wanted
later one). The Elfrink manual clearly describes the operation of
both types. It calls out the pressure for both types as 4.5 psi max
(with the outlet plugged past the gauge). The manual says the
pressure is directly related to the main diaphragm spring pressure.
Everett, didn't you tell me the spring could be tweeked?
By the way, the Elfrink manual is the best for explaining the
operation of all types of carbs too. It has cut-away diagrams of the
PDSITs for each fuel circuit.
Peter Parker
'66 Square; Phillip
Portland, 0R
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