I have been the proud owner of a 99 KTM 250 EXC for about 4 weeks now and I am in the process of fine tuning it to my preferences...I have reached the carb. I would really appreciate some jetting advice and/or recomendations as I am beginning my quest to understand fuel/air mixology.
Here are the specifics -
Location: Atlanta
Plug: BR8EG
Plug tip color: Black & damp, but not saturated.
Spooge Factor: some blowback at silencer/pipe joint, slight drip at tipe of silencer.
Premix: Golden Spectro - 42:1
Needle: Stock N85D, 5th position (highest)
Main: 170
Response: Awesome when cooler (60 & below) throughout entire range of throttle. At 60 & above, bogs at closed to 1/4 throttle position.
Here's what I think I know - the stock clip position for the needle is 3. The stock main is 175. Should I return to the stock settings and work from there? Should I replace the needle? I will be picking up some new jets of varying sizes tomorrow, but if I don't need a new needle, I'll pass on that.
Thanks for any response to this newbie's pursuit of tan ceramic!
Here are the specifics -
Location: Atlanta
Plug: BR8EG
Plug tip color: Black & damp, but not saturated.
Spooge Factor: some blowback at silencer/pipe joint, slight drip at tipe of silencer.
Premix: Golden Spectro - 42:1
Needle: Stock N85D, 5th position (highest)
Main: 170
Response: Awesome when cooler (60 & below) throughout entire range of throttle. At 60 & above, bogs at closed to 1/4 throttle position.
Here's what I think I know - the stock clip position for the needle is 3. The stock main is 175. Should I return to the stock settings and work from there? Should I replace the needle? I will be picking up some new jets of varying sizes tomorrow, but if I don't need a new needle, I'll pass on that.
Thanks for any response to this newbie's pursuit of tan ceramic!