Needles pic
#21
01-10-2012 | 05:07 AM
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Joined: Sep 2009
Posts: 5,050
From: Abilene, TX
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Not sure why the KLX300 needle would be needed unless you bored, ported, camed and removed the air box. The small adjustment most bikes require to open up flow should only require a shim under the stock needle to help under revs. That, along with moderate jetting changes to main and pilot should be enough. Most bikes are usually geared a little poochy to get them through testing, too. I'd go down one tooth on the CS once you get your jetting right, but that seems like an awfully small sprocket to start with. Looking forward to hearing how your efforts turn out.
#22
01-10-2012 | 05:37 AM
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Joined: Jan 2012
Posts: 86
From: NW Indiana
I hoping that the stock needle gets the fuel mix into a better place than it was. I'd go back to stock components and check everything, like he's doing. The air box and plug looked soaked with fuel. Every bike seems different when it comes to tuning.
#25
01-10-2012 | 03:00 PM
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Joined: Sep 2009
Posts: 5,050
From: Abilene, TX
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They're not that different to create the horridly rich plug condition shown in his pic. I almost think he may have something else going on.
#27
01-11-2012 | 12:04 AM
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Joined: Mar 2008
Posts: 3,406
From: N. Illinois
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I'm not sure, but, I think compared to the N1tc needle, the extra length down at the point of the other needles doesn't come into play. What I mean is that if you were to measure down from the clip/washer/(whatever the needle rests on in the slide), you would find that the diameters of the needles are similar. There has to be some difference in the diameters, but not as drastically different as the lengths may lead you to believe. I'm guessing that the longer end of the stock needle never comes into play. I don't believe that the end of my N1tc needle ever comes completely out of it's metering hole in the throat of the carb, even with the slide fully opened.
Make any sense?
??
Dan
Make any sense?
??
Dan
Last edited by dan888; 01-11-2012 at 12:14 AM.
#28
01-11-2012 | 04:28 AM
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Joined: Oct 2010
Posts: 4,507
From: SW Idaho
1st Gear Member
I'm not sure, but, I think compared to the N1tc needle, the extra length down at the point of the other needles doesn't come into play. What I mean is that if you were to measure down from the clip/washer/(whatever the needle rests on in the slide), you would find that the diameters of the needles are similar. There has to be some difference in the diameters, but not as drastically different as the lengths may lead you to believe. I'm guessing that the longer end of the stock needle never comes into play. I don't believe that the end of my N1tc needle ever comes completely out of it's metering hole in the throat of the carb, even with the slide fully opened.
Make any sense?
??
Dan
Make any sense?
??
Dan
#29
01-11-2012 | 10:12 AM
Da dirty moderator
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Joined: May 2006
Posts: 12,584
From: Pittsburgh, PA
I'm not sure, but, I think compared to the N1tc needle, the extra length down at the point of the other needles doesn't come into play. What I mean is that if you were to measure down from the clip/washer/(whatever the needle rests on in the slide), you would find that the diameters of the needles are similar. There has to be some difference in the diameters, but not as drastically different as the lengths may lead you to believe. I'm guessing that the longer end of the stock needle never comes into play. I don't believe that the end of my N1tc needle ever comes completely out of it's metering hole in the throat of the carb, even with the slide fully opened.
Make any sense?
??
Dan
Make any sense?
??
Dan
#30
01-11-2012 | 03:15 PM
Senior Member
1st Gear Member
Joined: Oct 2009
Posts: 262
From: Sonoran Desert, Arizona
Thanks,
Ron
