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some jetting help


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I got a 96 shee and I have not rode it since the cold weather has came in and im wondering if anyone had an idea what mains I should slip in to make up for the cold air. I have fmf fatties,dual k&n clamp on's with boyessen pro series reeds with spacers and a noss head with 19cc domes. I live in salt lake city,utah at about 4500 feet above sea level the temp I will be riding in is going to be around 35 to 45 degrees I am currently running 330 mains and stock pilots with needle clip in middle. Another question I had was I heard that raising your needle (dropping the clip one notch) is like going up a half on the main is that true? Or is it going to run completly different by changing either? Thanks for the help ;)

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well I just put a new top end in it this spring and have only gotten a chance to take it out once I tried a plug test and they looked tan so I thought I would drop the clip one notch to raise the needle up to see how it acted and I couldnt even keep it ideling it just wanted to die. So I put it back the way it was and it ran just fine so i figured that it must be pretty close to being jetted right. And the same thing happens If I pull the choke out when it's running it just wants to die. im assuming that those are signs that it would be to rich. Or am I wrong and it will act different if I put a bigger man in???

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well I just put a new top end in it this spring and have only gotten a chance to take it out once I tried a plug test and they looked tan so I thought I would drop the clip one notch to raise the needle up to see how it acted and I couldnt even keep it ideling it just wanted to die. So I put it back the way it was  and it ran just fine so i figured that it must be pretty close to being jetted right. And the same thing happens If I pull the choke out when it's running it just wants to die. im assuming that those are signs that it would be to rich. Or am I wrong and it will act different if I put a bigger man in???

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your needle effects 1/4 to3/4 throttle, raising the needle will fatten it up in the middle, your main is 3/4 to wot. I would step that up 1-2 sizes. plugs are cheaper than pistons.
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