Hardly surprising. Even taking a pair of carbs off and putting them
straight back on would require setting up from scratch in my book. Putting
them on a different car, or dropping the linkage, ditto, even assuming they
were spot-on to begin with.
You need to go slacken all the linkage clamps and balance the air-flow (both
on- and off-idle) and mixture for both normal running and fast-idle and
choke. You might like to look at the web site below and click on 'Spanners'
and 'SU Carbs'.
PaulH
http://www.mgb-stuff.org.uk
----- Original Message -----
From: "Marc" <smarc@abs.net>
To: <mgs@autox.team.net>
Sent: Sunday, November 10, 2002 9:33 PM
Subject: shot myself in the foot again...
> I decided to try an experiment which didn't work out so well. I took the
> dual SU's and manifold off my 73 B (which ran great beforehand), and
bolted
> them on my 80 B in place of the Weber DGV I had on it. I was very careful
> not to disturb the carbs during this process. I didn't muck around with
any
> of the adjustments, etc.
>
> I could not get the 80 to run with the SU's, and wound up putting
everything
> back the way it had been. Of course, the linkage between the SU's fell off
> as I was reinstalling the carbs. No big deal, I refitted the linkage, and
> reinstalled the carbs on the 73.
>
> Problem is, the 73 now runs extremely rough. I've checked for vacuum
leaks,
> etc. I have not touched any adjustments, as it seems to me that they
should
> be fine, since nothing was changed.
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