[Healeys] SU carb fuel pressure

[Michael Oritt]

Gary--

2 to 4 psi is the common wisdom.

That said, I had a set of HS6's on the MGA engine in my (now-gone) Elva
Courier and no amount of fiddling with floats, lid position, etc. would
solve a consistent fuel starvation problem when coming of hard, tight
right-handers under full throttle as in turns 1 at VIR, Summit Point, etc.
 I finally solved the problem by installing a Holly Blue (high-pressure
fuel pump) and reducing pressure via a regulator to about 5.5-6 psi.  Dire
predictions notwithstanding I never had an issue  with the floats' being
overcome by that pressure and causing leaking.

I'm not saying anyone should go to such extremes without a good reason but
I think the "common wisdom" is just that and not always gospel.

Best--Michael Oritt

On Sun, Jun 14, 2020 at 12:27 PM warthodson--- via Healeys <
healeys at autox.team.net> wrote:

> What is the Max recommended fuel pressure (psi) for SU HS 6  Carbs. Is
> there  also a Min fuel pressure?
> Gary Hodson
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