sleeper06

I drive around the water box where i can ,a couple of track i coudnt so i dry hopped it.You dont need it if your set up is rite

shoop 30 pilots bro

In summer on a p[orted cub im at 178-180 main depending on where i am so your 172 is about rite its getting cold and they love fuel

Its not going to give you horspower but traction is a big part of any race,i do it on all my asphault bikes that i run.Hub and everything

I have same temps going on rite now and im at 55 pilot 185 main and the needles that came with the carbs cels are too lean for the 39s with your set up.with your elevation try 180 main and go to to the other needles

stock port 25-30 pilots,280-300 on mains.air screws are bike specific

I specailize in sleeper builds if you wanna keep pump gas and stock carbs and go fast call me.I have all tools neccessary and will help you ouit

fattys like big pilots my experiance with those is 280-290 main jet 30 pilot, stock needle all the way rich Clip all the way toward pointy end

x2 on air leak one thing everyone forgets when they blow shit up is too pressure test it before you tear into it,now your guessing at what it was and it could have been narrowed down

Speaking from a welders POV its toast but being that it has to be re niked and bored it might be possible

Leak is only going to get worse identify it and fix it,its prob a sprocket or shift shaft seal

17 cc domes is drastic unless your running alky ,whats your static compression and who ported it.I live in long island,(nassau).I know of one person besides myself that ports.Im leaving 4 hunting tonight but ill be around this weekend.I test n tune in farmingdale at night on weekends in an industrial area.If you need a hand let me know.How well your builder planned out the port job will determine your jetting.I have seen duneports jet out at 400 mains and also been as low as 340 mains.27.5 pilots is a must start rich and PM me if you need my number I just got done with two builds that will need jetting soon so uill be down there tuning

Thanks shoopie there is a fine line between lean bog and rich I have messed with and tuned so many diffrent bikes i have them in a rolodex of cards.I pulled your card should be close,I forgot what your compression was but running race fuel if its not warented will hurt performance the fuel burns too slow

Get shearers ,39mm pwks,lockup ,overide

Bump the pilots richen up the needles,whats making you think you need 2 lean it out

Before you fill next time pressure test it,air comes out rad cap something is up.Make sure the notch on the dome is positioned rite in the head.

prob a typo

35 is the lowest pilot they make 4 those carbs.Start with 42 pilot 155 main and see where your at

Those carbs like big pilots on ported motors.Start 55 pilot ,155 main its been a while since i have seen those so i cant remember the needle

Ive heard of people staggering jets but have never had a need ,it was thought the intake runner on the clutch side is a lil longer from the stock box but many jetting days/tuning days have proven that wrong.Ohm out your plug caps /wires might not be jetting

Personal experiance with those pipes 30 pilot 2 turns out your main is good needle all the way rich and sync the carbs along with proper cable play

CEL with 33s an 35s

If he can ride that 250 You will have your work cut out,in the first 200ft

My 4 mil drag port beats a ported cub 4 - 5 races but the set-up is everything,I spared no expense on that motor and it shows.I just got my drag ported cub back fron nikisil so that motor will go together and ill run both bikes down the track and see

175 main 52 pilot.Might end up around 168-170 depending on porting.Safe start tho.Listen to her on top a rich break up and a lean stumble can feel similar sometimes.Do you know your durations?