05-01-2008, 03:59 PM
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CC Member
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Join Date: Jul 2002
Location: Greenville,sc,
SC
Cobra Make, Engine: Kirkham 427 (KMP 266); CAV GT40
Posts: 1,464
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Not Ranked
302 tuning
I soldered the idle jet to the holder so that worked ok. I now have; 37mm chokes, 150 mains, 55 idle jets, 200 air correctors and F7 E tubes, 16 degrees advance. It starts and runs very well, idles good with little or no black smoke(60 idle jets smoked a good bit) but under load I get a good bit of hesitation and backfire, popping. I have the idle circuit out 1 turn, they are balanced . Any thoughts? Sounds lean
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SPF Daytona coupe 055, Roush 427R
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