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Discussion Starter #1
Hey, I have a 4mm cub fully ported. I took my alky carbs off and put the motor in my trail bike. I am running shearer sb inframes and 35PWK gas carbs. It is running very rich right now. What do you recommend for jetting?
 

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who ported it ?... id call ur builder. are those the carbs u had on it for ur drag bike ?
 

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50 pilot middle clip on most needles depends on what needle your running. 160 mains thats for 1000ft elevation 80-90 degrees weather.

also depends on porting and pipes.
 

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I would say run it and check to see what the plug's say and go from there, there are to many veriations in jetting and not all the bikes are the same.
 

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Discussion Starter #7
Thanks for the info. These are not the same carbs I had on my drag bike, they were 39pwk on alky. I bought these new and they came with 165 mains and a 60 pilot. I dont remember what needles are in there but I know they arent CEL. I am around 800 elevation so I bet the jetting should be very close to what you recommended (dajoge).
 

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I ran 50 pilot 160 mains cel needle 4mill cub race gas shearer inframes 39pwks
 
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