Twin carbs take longer to set up than single because they are interdependant
(adjust one then you have to readjust the other then go back to the first
etc until both are right) but I wouldn't call it hassle. Brenda's
experiences match my own in that once set up correctly - and not fiddled
about with! - they keep their tune for many thousands of miles. My V8 has
to pass an annual emissions test (4.5% CO) and I use a Gunsons Gastester
beforehand. This also indicates the carbs are keeping their tune, however I
find that it consistently reads 2% higher than the garage machine.
PaulH.
----- Original Message -----
From: David G.Butcher <dbutcher@foam.bc.ca>
To: Majordomo@autox.team.net <mgs@autox.team.net>
Sent: Wednesday, May 31, 2000 7:23 PM
Subject: re[2]: Choosing a carb for a '79B
> Thanks Brenda.
> You've answered a concern I had that two carbs by definition must be more
hassle than one.
> What SU's are you using? HS4, HS6, HIF4 ...?
> Any comments on emissions?
> By the way, I have to make an exhaust change as well. What configuration
would you recommend?
> Dave
>
> > When I bought my 79 MGB in 1995, it had the original stromberg carb.
After
> replacing the exhaust system, I thought that I needed a little more boost.
I
> purchased a Weber down draft. I kept that on only a year. The
performance
> of the B was suppressed. I ended up buying a set of twin SU's from a
> gentleman in Bartlesville, OK. He rebuilds the carbs. He sent them to me
> ready to bolt on and drive away. My B's performance is outstanding. I
get
> better gas mileage, and quicker take off power. I didn't have to adjust
the
> jets, because the guy presets the jets for the make of the car. I have
had
> these carbs on for 4 years. I drive my car 365 days a year. I have never
> been happier with any other carb. By the way, this guy that rebuilds the
> carbs (all British types of carbs), was an engineer for Jag before he
retired
> some years back. And I might add, that I have never, never had a problem
> with these carbs, not even having to adjust the jets.
>
> Brenda
>
> <
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