Thread: Hawk Talk
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Old 07-16-2017, 09:49 PM   #892
Ariel Red Hunter   Ariel Red Hunter is offline
 
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Join Date: Jun 2016
Location: akwesasne, NY-13655
Posts: 2,220
Carburetor Magic

I just realized that I glossed over something on carb tuning in previous discussions of this system. Unfortunately this solution only works on Mikuni Carburetors, because Mikuni is the only outfit that offers interchangeable throttle slides. Now, if you prefer to roll on the throttle, the slide that comes on the carburetor you bought is adequete for the job. But if you like to grab a big handfull of throttle, then the standard throttle slide is too lean. You can cheat a little by going a little richer on the pilot jet, but it is easy to have an over rich idle that way. So the answer is less cut-away on the throttle slide. Less cut-away increases the suction on the pilot jet so that when you crack the throttle, you have a richer mixture of air and fuel. And this helps acceleration. And this lesser cut-away helps all the way up to around half throttle. And yes, you can feel the difference. You may have to lower the needle one slot to prevent an over rich condition at half throttle. And a word to the wise. Yes, you can overdo this whole idea, and then you will be worse off than before. The throttle cut-away thingie works on both round slide and square slide Mikuni carbs. Even better on square slides....ARH


 
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