Modifying Zenith for Air Balance
 

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

Re: Modifying Zenith for Air Balance
 

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

Re: Modifying Zenith for Air Balance
 

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

Re: Modifying Zenith for Air Balance
 

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

Re: Modifying Zenith for Air Balance
 

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

Re: Modifying Zenith for Air Balance
 

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

Re: Modifying Zenith for Air Balance
 

Nov/Dec 1994 pg 17. The Restorer

Re: Modifying Zenith for Air Balance
 

Won't load.:confused:

Re: Modifying Zenith for Air Balance
 

I just gave the reference on where to find it.

Re: Modifying Zenith for Air Balance
 

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.

https://c6.staticflickr.com/6/5610/3...da5fa2d8_c.jpg

Re: Modifying Zenith for Air Balance
 

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.