JasonsBanshee Posted October 4, 2009 Report Share Posted October 4, 2009 What's the big difference in DGK vs CEL needles? My 35mm Keihin PWK have DGK needles. If I go to CEL needles, what's the advantage? Where can I get CEL needles? Quote Link to comment Share on other sites More sharing options...
jbooker82 Posted October 6, 2009 Report Share Posted October 6, 2009 I will break it down for you. First letter is the Taper wich affects the transision from the needed to the main jet. So it has an effect around 3/4 throttle. The C is going to be leaner in that area then the D The second letter is the needle length changing this is like changing the clip position. When you all out of adjustment ethire all the way lean or all the way rich. You put in a shorter or longer needle and reset the clip position to the middle. The G is going to be a longer than the E so it will be leaner wich length effects the entire spectrum that the needle controls The last letter is the diameter. The diameter effects the transition from the pilot circuit to the needle so around 1/4 throttle. The K is a smaller diameter than the L so it is going to be richer than the L. Magic Racing has a pretty good selection of PJ, and PWK needles. josh Quote Link to comment Share on other sites More sharing options...
GNR101 Posted October 6, 2009 Report Share Posted October 6, 2009 I will break it down for you. First letter is the Taper wich affects the transision from the needed to the main jet. So it has an effect around 3/4 throttle. The C is going to be leaner in that area then the D The second letter is the needle length changing this is like changing the clip position. When you all out of adjustment ethire all the way lean or all the way rich. You put in a shorter or longer needle and reset the clip position to the middle. The G is going to be a longer than the E so it will be leaner wich length effects the entire spectrum that the needle controls The last letter is the diameter. The diameter effects the transition from the pilot circuit to the needle so around 1/4 throttle. The K is a smaller diameter than the L so it is going to be richer than the L. Magic Racing has a pretty good selection of PJ, and PWK needles. josh dam your useful with this stuff Quote Link to comment Share on other sites More sharing options...
jbooker82 Posted October 6, 2009 Report Share Posted October 6, 2009 When I first got my keihin pwk's I read duncan's jetting guide at least 2 or 3 times a day. It really explains how the keihin's work and the needle explination is great. I couldnt get it to opean right it is probably just my pc but give it a try. http://www.duncanracing.com/TechCenter/KeihinCarbJetting.pdf Quote Link to comment Share on other sites More sharing options...
GNR101 Posted October 6, 2009 Report Share Posted October 6, 2009 When I first got my keihin pwk's I read duncan's jetting guide at least 2 or 3 times a day. It really explains how the keihin's work and the needle explination is great. I couldnt get it to opean right it is probably just my pc but give it a try. http://www.duncanracing.com/TechCenter/KeihinCarbJetting.pdf cool thanks. it works fine should help me out if i ever get stuck Quote Link to comment Share on other sites More sharing options...
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