Thread: fine tuning webers
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Old 01-05-2009, 06:00 AM
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priobe priobe is offline
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Join Date: Mar 2004
Location: miami, FL
Cobra Make, Engine: E-M Cobra Ford FE 427 w/ Webers 48 IDA
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Entdoc,

here is a question

After 2000 RPM, if I change the main jet (not idle jet) from 160 to 165 , 170 will that allow me to lean out my idle circuit.

If I understand the books that I read correctly, the main jet helps with the idle circuit around 2000 rpm and carries it the rest of the way.


When I tried the a lower idle jet 55 with 100 holder (prior to the making changes to my main circuit) I still experience a lean popping condition right after 2000 rpm.

However I increased the idle jet to 60 and experienced the same problem.


When I changed the air corrector, e tube and main jet car ran great. (210, F7, 160)

Now I am looking to lean out my idle and everything below 2000 rpm.
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