On Thu, 5 Jun 2003, Paul Wies wrote:

> The engine currently has an 009 and a weber 2bbl.  I am 95% happy with this
> setup, but don't like the hesitation after slowing down.
>
> I will be putting an original back on.  Just hook a t fitting up and use the
> main vac line as a source to the distributor?

If by "main vac line" you mean the one to the intake manifold, this is
probably not what you want.  Distributors generally want to see the
vaccuum at the carburator throat, not at the manifold.  There's a big
difference between the two.  The carb throat is a venturi and the pressure
drops as more air flows through -- more airflow means more vaccuum.  The
manifold vaccuum is highest with the throttle closed and lowest with it
fully open.  Unless Vanagon distributors work differently than the ones
I'm used to (I've never had a gas Vanagon) hooking it to the manifold
vaccuum line will get you full advance at idle and no advance at full
throttle, the opposite of what you want.  Your carb should have a little
vaccuum line nipple on it somewhere for this.

David Brodbeck, N8SRE
'82 Diesel Westfalia
'94 Honda Civic Si