Weber IDF Jetting |
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Weber IDF Jetting |
FastFroggy |
Jun 30 2017, 12:20 PM
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#1
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Newbie Group: Members Posts: 47 Joined: 27-November 15 From: Ann Arbor MI Member No.: 19,415 Region Association: Upper MidWest |
I am starting to play around with tuning and plan to start getting some small increments in jetting. Just to see if I can improve drivability for now. I have twin 44s
Simple question for now: I need 4 turns of idle mixture to now stumble off the line. Should I consider jetting richer? thanks |
ThePaintedMan |
Aug 9 2017, 06:30 AM
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#2
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Advanced Member Group: Members Posts: 3,886 Joined: 6-September 11 From: St. Petersburg, FL Member No.: 13,527 Region Association: South East States |
36 venturis in 44s for a 1.7 liter is HUGE. I'd hate to say start over with a track day so close, but if you're looking for better drivability, that large of a venturi is really hampering the intake "signal" running through the carb. For reference, I have a 1.8 and run 40 IDFs with 28 venturis. I would also imagine that with those venturis, you're not getting enough of an effect on the idle circuit to pull the fuel through them, which is why you need to open them so much. But that's just a SWAG (scientific wild ass guess).
For a track day, you're going to be full throttle most of the time anyway, and at high rpms, so you might want to stick with what you've got till you have more time to play with it. |
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