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Discussion Starter #1
I see that the xt225 is suitable for a Mikuni TM33-8012 Pumper Carb upgrade. What about the tw200? If not the Mikuni TM33-8012 Pumper Carb, then what other carb would be suitable?
 

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The carb ain't really the problem.
 

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The carb ain't really the problem.
Is "The Problem" is that it is just a TW200, a bike outfitted with a motor that just isn't very suitable for extensive mods, and that I should be happy with rejetting, opening up intake and exhaust flow a bit, and perhaps just a little bit of cam work? Cuz if that is what it is, then I will humbly bow to my elders in this forum, and resist my habitual compulsion to over-modify...but maybe just a little bit would be ok.
 

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LOL. You pretty much nailed it. Still, no reason not to experiment.



The TW hits a bottleneck once the fuel charge leaves the carb, and for that reason I think the stock carb would flow enough for even the most highly modified TW.



I do think a flatslide could have some value, but for the expense involved with that particular conversion I think it's overkill. I'd try to work with one of the dime-a-dozen 28mm Mikunis.
 
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