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Carb advice?


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My right carb is junk. Allows fuel past the float valve o ring, no matter what I do. New valve, o ring, different o ring, bigger prong, old valve, new valve, switched valves, etc. Fu*k this carb.

 

-stock motor

-stock timing (although I just got an adjustable plate I need to install)

-Have a pro flow air box mod with a k&n filter

-vforce4 reed valves (I know... not necessary)

-stock exhaust

-600ft elevation

-40:1 yamalube 2R

-riding exclusively XC style. All forest trails, rocks, mud, branches, shit 4x4s are made for but fun AF on a banshee.

 

Current carbs are mikuni VM28.

 

I can go back to Mikuni stock carbs, dual Keihin 28mm carbs, a 1 into 2 single carb kit with pods or air box, lectron single 36HV or dual lectron 30s.

 

Either way I want to make one purchase on this one.

 

If Keihin, I know absolutely nothing about Keihin jetting. Where to start with one 35mm or two 28mm.

 

So anybody have a couple cents on this one?

 

 

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go the 28s if you plan on going to a bigger motor in the future. otherwise stock carbs would be great for that set up. i would think youll be in the 260-250 range on your main jet and 27.5 on the pilot works with a lot of stuff. as far as kiehins maybe in the 140 main range? and low 40s pilot.  

there is a jetting fourom on here that has 20 something pages of different bikes and their setups with all the jet sizes. 

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The jetting on mikunis I am pretty solid on. The Keihin use totally different numbers for size range so that where the confusion comes in.
The mikunis on it now are 28mm and haven’t been bored as far as I can tell.
Thanks


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