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General Category => Modifications => Topic started by: 88 gtu on May 14, 2012, 09:08:12 PM

Title: Jet Help
Post by: 88 gtu on May 14, 2012, 09:08:12 PM
I just switched my bike from stock to individual filters and a vance & hines 4 into 1 exhaust. What size jets do i need??
Thanks, Brian
Title: Re: Jet Help
Post by: Signaller on May 15, 2012, 07:11:30 AM
Hi Brian,
     As you are probably aware, the folks here are very knowledgeable about this. One thing they are not is psychic (perhaps psychotic). I have a running thread at the moment called "UNI PODS, manual petcock..." this may give you some idea as to how to formulate your questions. Also I found a rich knowledge base within the Files section under the "Child Board" Carburetors. Good luck with your mods. Im looking forward to reading about your progress.


Dan
Title: Re: Jet Help
Post by: andyb on May 15, 2012, 08:06:35 AM
Searching is haaaarrrrrd! (http://www.fjowners.com/index.php?topic=1974.0)
Title: Re: Jet Help
Post by: 88 gtu on May 15, 2012, 05:52:14 PM
Well thank you "andyb" I searched Haaaaarrrrddd and did not see that one. What i did see was about 10 different jet combos and figured someone had this same setup and could steer me in the right direction.
Title: Re: Jet Help
Post by: fj1289 on May 15, 2012, 08:57:47 PM
Stock carb internals?  Or jet kit? 

Main jet will depend on the needle you have - can vary from 112.5 to 135 (those are Mikuni main jet numbers) or the corresponding Dynojet number.

If stock needles on a US model - will have to shim them to get the mid range right.