Modifying Zenith for Air Balance

[Fullraceflathead]

Does anyone have the step by step article or instructions on making the necessary modifications to make the carburetor Air pressure balanced?

 

[Synchro909]

If somebody with that Info sends it by PM, please include me.
I'd like to know too.

 

[J Franklin]

MAFCA magazine Restorer had that in one of their issues about 6 years ago if anybody has an index it could be found.

 

[Brian T]

Do a search for Air balancing Zenith carburetors, using a larger air cleaning is a way around the problem.

 

[Benson]

Chris Pelikan did a lot of research on the subject of the need for air balancing ... Here are his thoughts:


http://www.modela.org/filtering_air_into_carb.html

 

[tbirdtbird]

it is quite simple and posted here before...Tom W just recently posted it about a month ago

 

[Gary WA]

Nov/Dec 1994 pg 17. The Restorer

 

[Synchro909]

Nov/Dec 1994 pg 17. The Restorer

Won't load.

 

[Gary WA]

Won't load.

I just gave the reference on where to find it.

 

[Y-Blockhead]

Someone posted this picture a while back. You can see the vent hole is filled and the lower carb body and venturi are modified. I can only speculate that a 'port' is drilled in the body leading to the carb throat by the choke butterfly?

If I remember correctly this is how Renner's modifies the Zenith.

 

[Tom Wesenberg]

If I wanted to add a balance tube, I'd buy a thin brass tube from the hobby shop or hardware store that fits tight into the air vent hole. It only needs to be about 3/4" long. Then slip a piece of tubing over the brass pipe and have it enter anywhere between the choke plate and air filer. This way you can have a balanced carb for an air filter without doing any cutting or drilling to the carb.