I said:
> > Hmm, unless you have added a pressure regulator as well, you are lucky.
> > SU's are rated for a 1.5-3.5 psi pump, anything more blows past the float
> > needles and floods over. .....
Barney Gaylord writes:
> I must have heard about 100 people make this same statement, but I'm
> beginning to think it's an old wives tale... I've never had an overflow
>problem.
> has anyone actually experienced carburetor overflow caused by these pressures
> and not attributable to worn float valves or dirt?
Yes, I have. Both with new gross jets (real bad) and with new needle valves
(not as bad). It happened when I fitted an AC pump I has around when I put
a 1275 in my Sprite, and the old engine had had a mechanical pump. I've also
read numerous similar reports on these lists over the last 10 years. No "wives
tales", just physics.
Your saving may be that your pump is rated >> 3.8-5.7 psi << and not 4-7, like
many for the US market.
The SU floats just aren't rated for that much pressure- it's even listed in the
manuals. You *may* get away with it, or may not- it surely depends on many
conditions, including float used, vibration, altitude, petrol, and more.
proper pressure pump or adding a regulator is fairly guarrenteed to work.
________________________________________________________________________
Roger Garnett (Roger-Garnett@cornell.edu) http://www.wayward.team.net/
"The Wayward Sports Car Centre"
"All donations of stray, orphaned, odd, neglected, etc.
sports cars and bits in need of a good home accepted."
"The drop off bin is right there- behind the barn..."
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