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Old 12-20-2013, 05:53 PM   #1
paulie12
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Bike(s):
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CRF100 jetting?

Hi,

Those who are familiar with the CRF100, what main jet size do you guys use? I have a stock pilot jet and I currently have a 112.5 in the main. Is this too rich for the winter? The airbox is de-snorkeled and I have an aftermarket exhaust and UNI filter.

Any input would be great. Thanks!
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Old 12-20-2013, 06:16 PM   #2
TomballD
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Stock Main Jet is 98, Stock Pilot is 35. The pilot jet only controls the idle, so this may be why it doesnt idle. 112.5 may be a little big as I have seen a 102 recommendation for pipe and filter. You can play with the clip and air screw, but for real tuning through the rpm range you have to have the jets right. Google it, there is a ton of stuff on planetminis.com and thumpertalk.com.
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Old 12-20-2013, 07:31 PM   #3
Ashdog
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http://www.thumpertalk.com/topic/976...idle-question/

http://www.supermotojunkie.com/showt...ting-for-xr100

Here's a couple pages I have bookmarked, hope this helps..
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