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Old 06-26-2012, 09:30 AM
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wolf k wolf k is offline
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Join Date: Jul 2010
Location: Augusta, MO
Cobra Make, Engine: Sold ERA FIA 2139, 331 Weber IDF
Posts: 279
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Finally resolved my transition zone issue. I knew my problem would be solved by an emulsion tube change, but with all the internet reading, there was no real consensus with which e-tube would solve my problem. I did not want to purchase handfuls of e-tubes and experiment.

I started by enlarging my air correctors by drilling, this was going with the assumption that my main circuit was starting too early. With each progression in enlarging the air correctors, the results got better. Once I got past 2.20 on the air corrector, anything larger had no more effect, all air bleed restriction was now being handled by the e-tube itself. So I simply removed the air corrector jets.

However, I still had a slight occasional flutter occurring in the transition zone. Finally, drilled two additional holes in the e-tubes second row from the top. Problem solved, car runs like a modern fuel injected V-8. A/F ratio consistent in 13's, 12's when under load. In my case, the air correctors, did not have a very big impact on A/F ratio, only in the way the e-tubes performed.

Last edited by wolf k; 06-29-2012 at 02:25 PM.. Reason: added info
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