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What size carb and jets for a 2 to 1


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Some guys are saying to run a EEK needle. I have an EEG in the garage. That would be a touch richer overall diameter is smaller. I was thinking setting the clip second from the top. I still have to take care of some other issues before I can fire it up again. Plus its like zero degrees here lately. I should probably wait for some warmer weather anyway. Right now there is a 60 pilot and a 180 main. I had it running less then 5 minutes trying to get 3 heats cycles. I shut it down when the coolant started leaking from the head nuts. I went and got some copper washers and acorn nuts to remedy that problem.

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I got my clutch case bolt holes helicoiled and replaced my kick gear spring. Old one was worn out. I cured my coolant leak coming from the head nuts. I pulled the needle and popped in the EEG on the second clip. It still has a run away rpm after you crack the throttle a little harder. The idle is funky too. I tried to get it to idle but it keeps going from a low idle to a higher idle back and forth every 5 seconds or so. Playing with the air screw and idle screw didn't really do anything. I need to do a leak down test next when I have time. I ran out of time for today.

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I ran a DEK needle on a 65 HP bike.

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  • 3 weeks later...

The 2-1 isn't bad I dunno how it compares to dual carbs since I don't have any. But I ran my banshee with a trinity 2-1 kit 33mm pwk, +4 timing, fatty's and it whooped 450s with exhaust and intake at the track. And still trail rode it.

What was your jetting?

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  • 4 months later...

i just built a 4 mil cub with trinity 2 to 1 intake started at 200 main wasnt enough so i drilled it out (parts stores closed) i ended up going with an 1/8 inch drill bit its getting closer thing ripps but dont wanna lean it out what ya guys think raise needle and go back down to 200 main its a 41mm pwk 20cc domes vf3

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