Larry,
Did I understand you to say that you are running a blower on your MG with
SU's? I've been curious why all of the Blower advertisements that I seen
required replacing the SU's with a single Weber. I may be mistaken, but I
would be surprised if the stock SU needles would do the job properly with
the addition of forced air. Perhaps there are some recommendations for
alternate needles to help with the leaning out you mentioned.
Dave 72 B
----- Original Message ----- "EDITED"
From: "Larry Colen" <lrcar@red4est.com>
To: <mgs@autox.team.net>
Sent: Friday, April 30, 2004 11:17 AM
Subject: Re: Fuel injection
Granted, the whole point of my post was an excuse for a cheap
pun. However, when I was trying to dial in the carb on the blower, I
installed an O2 sensor and would watch that while driving. It was
amazingly educational, watching what happened, and noting things like
how much richness affected fuel consumption.
I had always labored under the misconception that SUs do not lean out
when you step on the gas. Unfortunately that is not at all true, and
when running on the edge of detonation or preignition, it can be
critical. I don't know if this leaning out on "tip in" is exacerbated
by the blower, but I ended up following Joe Cuerto's advice and
plugging off one of the ports on the carb piston.
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