2Smoker Posted August 26, 2004 Report Posted August 26, 2004 Hey, My crank went, and while it was getting fixed I did my top end up. I have a dual stage air filter with a modified air box, I am running a 260 main jet, and I have FMF fatties with powercore 2 silencers and reed spacers. The top end was completely stock. The only thing I changed was I planed the head, had a good port job done and bored it out .20 over and put wiseco pro lites in. Now the guy that did the work said to drop the clip (raising the needle) one clip, but I took them apart last night and dropped it 2 spaces putting it as far to the bottom as the clip will go. I get the crank tomorrow and I am going to put the bike together tomorrow night. How much does dropping the clip change the jetting, and is 2 spaces too much? I know its hard to tell because the bike isnt running but i wanted to know how much of a difference moving the clip makes. Quote
itsmyforte Posted August 26, 2004 Report Posted August 26, 2004 i don't know your elevation but on a stock shee at sea level i have heard of people putting in 30 pilots and 320 mains. so with the additional mods you have just put on, i would advise going up quite a bit. atleast to what i listed above for starters. Quote
Banchetta Posted August 29, 2004 Report Posted August 29, 2004 The clip positon can change performance drastically on certain pipes...especially fmf pipes...4th or 5th clip will be your sweet spot, if it sputters before powerband, then go back to the 4th clip..trial and error...I'd start w/ a 290-300 mains since its now ported, you will need a larger main...the pilots might have to go up also w/ the porting, but I'd try the stock pilot first and see how it runs w/ the throttle response and how well it starts when cold and hot...keep us posted. Quote
2Smoker Posted August 29, 2004 Author Report Posted August 29, 2004 Ok I had it out last night, my pilot jet needs to be bigger because I can't get to idle. If I choke it I can get it to idle sort of good, but as soon as I take the choke off it revs up really high and is really erratic, then it quits. A slighly lean condition can result in a hesitation, missfire, or revving high & fast with no power. Say your pilot circuit is lean, when you start it up with the choke "on" it's fine, but when you turn the choke off it idles very high; there's more air per volume of fuel so it burns hotter (in this case airscrew adjustment may solve the problem). I read that in the FAQ. I am going to screw with my settings today to see if I can't get it to idle witht he pilot jet I have. Other than the idiling, it was buring a tad to rich, so I moved the clip up one (down one from what it was before the engine was rebuilt) and I checked my plugs and its working awesome. I don't think I will have to change my main jets just my pilot jet. Quote
2Smoker Posted August 30, 2004 Author Report Posted August 30, 2004 (edited) I checked my plugs again today, its running lean all over I need more fuel to the warp drive scotty!!! Anyways I am picking up a 300 main and a 30 pilot tomorrow hopefully that'll fix things I will let you know. BTW - I checked compression tonight and I'm running 140 pounds on both cylinders almost perfectly the same. Edited August 30, 2004 by 2Smoker Quote
2Smoker Posted August 31, 2004 Author Report Posted August 31, 2004 I fixed the problem!!! The shee is working fine again. My pilot jets were both clogged thats why it wouldn't idle I stepped up from a 260 to a 320 and it just HAULS ASS LIKE THERES NO TOMORROW!!!! Crazy -2smoker Quote
Banchetta Posted August 31, 2004 Report Posted August 31, 2004 sounds like your doing your homework. Let us know your final jetting when your done. Quote
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