jetting help

[peatdizzle]

If I put a FMF fatty on, which jetting do you recommend for maximum performance.

 

[sand rocket]

to get a starting point you need to post your altitude. All motors will run a little diffrent.

[Ducman]

Depends on what type of filter you are using (K&N or foam), airbox lid on or off, what type of air temps and elevation.

 

With the stock air box and filter w/lid on sea level and 80 deg F. you can run 27.5 or 30 pilot air screws 1.5 to 2.5 turns out, needle middle clip, 260 mains

 

If you are running K&N filter w/air box lid off, sea level, 40 degrees F. you can run 30 pilot, 1.5 turns out, needle 4th clip from blunt end (one clip position richer) and 320 mains.

 

These are 2 examples of one extreme to another but will be correct jetting for the circunstances. You will be at or between these 2 settings.