[lsbanshee]

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?

 

[Kawiking]

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

 

[s-540]

i run a 172 main and a 48 pilot. iam about 1800' above sea level.

 

[wesw78]

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.

 

[dajogejr]

155 mains, CEL needle middle clip and 48 pilots.
I had a 4 mil cub, 35PWKs with Shearer Inframes. I'm 800 feet asl, 65 to 90 degrees riding temps.

 

[BBIII]

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.

 

[lsbanshee]

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).

 

[dajogejr]

60 pilot is WAY Fat, but....you gotta understand, they gotta set them up way fat so someone doesn't go and blow their chit up.

I would start with a 50 or 52 pilot and 2 turns out on the air screws.

 

[badassbanshee479]

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

 

[bigboybanshee]

I live in Memphis too, last time I checked we were at roughly 400' above sea level.

I had a 4mil cub, fully ported, but with 39 PWK's. 168-170 mains, 52 pilot, can't remember the exact needle.