zachass9 Posted March 16, 2009 Report Posted March 16, 2009 Just got my passion 421 put back together. I am running 39 pwk's with 165 mains and 60 pilots and the needle on the middle clip!! The bike runs good off idle, but it has a really bad flat spot when I open up the throttle, following the flat spot, this thing effing rips!! But, I want to get rid of this flat spot!! Any ideas? I am thinking that I need to move the needle, help me out!! Thanks in advance!! Quote
okbeast Posted March 16, 2009 Report Posted March 16, 2009 Flat spot meaning you can pin it and it bogs some then picks up in the upper rpms? What kind of needle are you running? Quote
zachass9 Posted March 16, 2009 Author Report Posted March 16, 2009 I cant remember the needle type, I looked last week, but cant remember! It is whatever needle is shipped in the pwk's. I wouldnt really call it a bog, but it is really more of a lag!! Cant really explain it, but it isnt that deep bogging sound!! Quote
okbeast Posted March 16, 2009 Report Posted March 16, 2009 I'm not too sure on tuning the needle. I never had problems with mine so I hadn't ever messed with it. We can check it out this weekend though, the LSPS store has plenty of jets to get you setup. Quote
zachass9 Posted March 16, 2009 Author Report Posted March 16, 2009 Well I got ahold of my builder and built a game plan on the jetting, so I should be able to get it figured out!! Thanks for the help!! Now, if I can just get this damn shifting problem taken care of!! Thast my project tonight!! Quote
okbeast Posted March 16, 2009 Report Posted March 16, 2009 Well it's a cub without an override so it won't be perfect by any means. Make sure the shift shaft is adjusted properly where it contacts the shirt star. Other than that it's pretty much worn out parts that make them shift bad, other than the large amount of power they make. Quote
zachass9 Posted March 16, 2009 Author Report Posted March 16, 2009 Thanks!! Jeff from fast was supposed to come out to play this weekend, but they didnt get his trailer done, so no parts from there!! LOL I will rob a new shift shaft off of a new project bike tonight and adjust it and put it back together, to see what happens!! If I dont get it fixed, somewhat, I will be faster in high heels out there running around drunk as hell. LOL See ya there, Quote
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