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  #21  
Old 03-02-2011, 02:00 PM
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Thanks for sharing RR#13. Great writeup. I'm planning on putting one on my 95
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  #22  
Old 03-02-2011, 04:24 PM
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Default uh, forgot to add a little note...

The 250 two strokes tend to come with a slightly smaller carb body inner diameter... so if a 125 was 38-40, the 250 would be a 36-37.

you would think bigger opening is better for a bike thats burning more fuel, not quite. the motor will suck what it needs regardless. the reed opening dwell time just remains open a split hair longer.
The 250 makes most of its power down in the low to midrange RPM, so they use a smaller diameter opening.

hope this helps, maybe its overkill...
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  #23  
Old 03-02-2011, 05:03 PM
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Originally Posted by Pretendo View Post
A shorter carborator body will improve quick throttle response, and change the hypothetical crankcase volume (Decrease volume). it will benefit a rider looking for low end. A longer carborator body will improve top end horse and increase the hypothetical crankcase volume.
How does something upstream of the reeds have any affect on crankcase volume?
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  #24  
Old 06-30-2011, 12:34 PM
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Im gunna be honest with you guys, i am really scared to buy Keihin Carb for my 02. Ive gotten it sooo dialed in at this point and not sure if its worth it to buy it. I know they are supposed to be way better than the Mukini. Any thoughts on whether i should just leave things how they are or buy the keihin? Thanks

Rob
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  #25  
Old 06-30-2011, 02:03 PM
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Originally Posted by Honda-Man-610 View Post
Im gunna be honest with you guys, i am really scared to buy Keihin Carb for my 02. Ive gotten it sooo dialed in at this point and not sure if its worth it to buy it. I know they are supposed to be way better than the Mukini. Any thoughts on whether i should just leave things how they are or buy the keihin? Thanks

Rob
That Mikuni won't stay dialed in. I fought with those things for way too long on two bikes - an '02 and an '03. The best I got them working was with JD jet kits. A lot better than stock but still wouldn't stay dialed in...

The best thing I ever did for those two bikes was install Keihin carbs. I bought mine from JD jetting. JD Jetting Store :: Keihin Carburetor...
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  #26  
Old 06-30-2011, 03:59 PM
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Quote:
Originally Posted by David_L6 View Post
That Mikuni won't stay dialed in. I fought with those things for way too long on two bikes - an '02 and an '03. The best I got them working was with JD jet kits. A lot better than stock but still wouldn't stay dialed in...

The best thing I ever did for those two bikes was install Keihin carbs. I bought mine from JD jetting. JD Jetting Store :: Keihin Carburetor...

Oh, well so far i am happy after probably 20 hours. Once is get paid for this month i may go lookin for a Keihin. Thanks for the advice

Rob
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