Correction- my problems at top end were with the stock MGB SU pump. Flipping
the switch to the little noisy square thing solved the
problem, even though it was the low pressure item.
I think Dan is right on. The stock MGB SU pump is fine for every day use up to
& including a mildly modified 4.2, in my experience.
Sustained high speed- over 110 mph is unknown, but the SU will handle at least
short runs at over 130 mph. It will not handle wide open
throttle over, say, 85 mph. The forgoing is based upon personal experience
with a 215 & 4.2, & is limited to that. I known nothing
about larger or hotter engines. I have heard people say they like the Holley
"red" pump, whatever that is.
Jim Stuart
Larry Hoy wrote:
> >Remember Jim Stuart's apparent fuel starvation in Illinois at the drag race
>event? He suggested the little square noisy pump was to
> blame, the same pump I'm running.
>
> As far as fuel pressure I just looked up Edelbrock's site ... coulda done
>that before! Their recommendation is no more than 6psi,
> 5.5psi preferred. I'd say your SWAG is pretty darn close.
>
> Larry Hoy
>
> ///
> //
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