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Join Date: Jul 2010
Location: New Jersey
Posts: 7,172
Garage
Weber 46 setup for a 3.6 / help

Working on a little project with a 3.6 and Weber’s. Ida 46s

Looking to see if there’s anyone out there with similar setup that can help with jet sizes and such

Old 12-18-2019, 04:44 PM
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Join Date: Sep 2015
Location: Costa Rica and Pennsylvania U.S.
Posts: 3,301
46 on a 3.6

If you have original Webers I can help you.Do to your port size you should use the original jetting with one change.Change the main jets to 180 with the 42mm venturis.They are just a little smaller than the 3.6 ports.MAIN jet is always 4 times the size of the venture plus 5% for a larger motor.I have a few sets of 42mm if you need them.I have a nice set of custom step stainless headers and muffler if you need another 25-30 HP.Ciao Fred
Old 12-19-2019, 04:59 PM
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Join Date: Sep 2015
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Webers

Also the tall diffusers were a size of 4.5mm but when I raced in IMSA we used a 5.0mm for better midrange from 4-7500 rpm.I have some of them as well.Ciao

Old 12-19-2019, 05:49 PM
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