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Brian_Heath

XR600 + 41mm flat slide carb=anybody?

9 posts in this topic

Has anyone put that mikuni carb on their 600? A mechanic here in Colorado said he did with a yoshi pipe and got guite a bit more power. If anyone did...could you let us in on mileage and power differences. What about a pumper carb? Do they even make one for the 600 air cooled jug?

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I put a keihin 41mm fcr on my xr6. It basically turned it into a different bike, especialy on the bottom end. I dont know about mileage, but it does not seem to have gotten any worse. Only downside is its expensive, otherwise it rips.

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Two of my buddies put the 41mm flat slide on and it made a big difference. No bog on the low end. But they had older bikes with the stock 38mm. My 97 came with a 40mm so I never switched.

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The XR600 from '88 to '01 had a 38mm carb. Unless the 41mm you're looking at is a pumper carb, I wouldn't waste the money.

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the fcr is a 41mm flat slide pumper, if you want more info on this carb sudco is the only company I know of that makes the kit for the xr6.

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Years back i used a 40 mm round slide on an 89,,,also a 41mm mikuni that xr's only sold. I dont think i would do that again unless you are going flat tracking with the engine,,,it worked good there. If you are staying stock on the cam i dont think i would spend any money on a bigger carb,,,but I have not used one with a 'pump'.

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i have a thumper racing 660 kit on mine with the hrc cam and a ported and polished head with fmf exhaust. i am presently doing some research on the khein fcr 41 flat slide pumper and so far i am finding out that it makes them very responsive on the bottom end and screams like a bat out of hell on top end, also it starts on the second kick when set up right. let me know if anyone has any input on this carb

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