Jetting 1985 250r

[cehmke]

I am new to the 3-wheeler thing. My 250r runs decent but not nearly as well as a friend of mines. It has FMF Pipe and Silencer w/ V-Force valve and reeds and a UNI air filter. It bogs down when I on the throttle ( twist throttle conversion ) My friends is stock w/ a wiseco piston and fmf pipe and silencer. Can anyone help?

[skippy]

what jet is in there now? needle placement?

[RideRed250R]

put in a 143, 38 pilot and be gone.... my current jetting with stock reeds k/n filter and fmf pipe and silencer
adam
2 turns out

[cehmke]

It is a 155 jet.

[x.system]

It is a 155 jet.

Clean the air filter and put a new plug (correct gap) in and see if it still does it. If it does move the clip on the needle up one position, this will drop the needle which will slow down the fuel delivery at take off and should help with your bog problem. Do plug chops after every adjustment you make and only do one adjustment at a time. Just because it bogs doesn't mean its a jetting issue either. Your reeds could be worn, air leak, low compression, many possiblities. Use the search for plug chops and jetting, theres tons of information on this site.

Don't jump from a 155 to a 143 main either, we can't jet your bike over the internet. You want to move one or two jet sizes at a time and do plug chops if you have to rejet.

[cehmke]

WOW! That definately fixed it. Bent my grab bar Thanks!

[TtownJoeShow]

LOL thats awsome!!!! GASS ONN!!