08-06-2005, 08:57 AM
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CC Member
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Join Date: Apr 2004
Location: Hyannis,
MA
Cobra Make, Engine: ERA FIA #2039
Posts: 255
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Not Ranked
Weber Tuning
I found a combination of jets and adjustments that work great on my little 302. It has 48 IDA's with 37mm chokes. The jets and adjustments that work well for me and eliminate the annoying stumble at 2000 RPM are:
Idle jet - 65
Idle air corrector - 120
Main fuel jet - 150
Air corrector - 200
E tube - F7
Accel Jet - 50
Accel bypass - 50
Idle needle valves approx. 7/8
At first I was hesitant to go to 65 on the idle jet (small motor) but reading the Weber manual indicated to me that the jet only makes more fuel available to the needle setting so I gave it a try and the stumble at transition disappeared.
Pat is now a happy camper.
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