A few years ago, before I changed my TR3 over to Webers, My car lost
some power during a race, but managed to finish respectably. It
turned out that the clamp on the thottle shaft came loose and the
butterly was not opening. The crossover tube must have been letting
enough mixture over to those 2 cylinders to keep it running OK. I was
not just running on 2 cylinders. I was worried that it may have done
some serious detonation damage, but everything was fine. Joe(B)
>I run HS6 (1.75) carbs on my MGA mounted on a Derrington intake
>manifold. The balance tube is probably at least 1.25 in. inside
diameter! When >I mentioned
> this to Carl Heideman, he said that they dynoed a variety of styles
of intake
> manifolds with SUs and found that the power increased with the
diameter of the
> balance tube all the way up to reasonable limits.
> > Cheers
> Gary Anderson
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