<VV> Single Carburetor-reply

[Matt Nall]

The problem is when I watch the vacuum advance when I blip the engine  
from idle it dips before it goes up, after that the advance is  
normal.  I have set the timing by making sure it does not go above 32  
degrees BTDC at high rpm.  I need to get rid of the "dip".  The  
engine sometimes stumbles when it dips and may even pop back through  
the carburetor. The vacuum is connected to the vacuum tube already on  
the carb, not from the manifold.  Would manifold vacuum work better?
JI

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 No Jon....  The carb you have should have a "ported Vacuum port"  as all the GM's used it...


You are connected to a 100%  open port... used for something else....  look at the carb...
 or just disconnect and plug!   The Distributor's Mechanical advance  will work fine...


What is the model number of the distributor?


>From my Tech Pages    


http://autoxer.skiblack.com/nallm/disdata.jpg


Matt Nall
Charleston, Oregon
http://tinyurl.com/The-Corvair-Patio

http://tinyurl.com/Matts-Tech-Pages