Surprise! Another shee jetting question.

[250RTONE]

Bone stock engine, fmf fatty pipes and silencers, pro flow intake with a k&n, lid on, my elevation is approx 4500 ft and i am adding a adjustable timing plate. What carb settings would you suggest and how much can i or should i advance the timing??

[bigboybanshee]

You shouldn't have to change the jetting at all. If you run premium pump gas, you could bump it up a few degrees and won't hurt anything. I was running +4 timing back when I had similar mods to yours, but I was also running a Noss head with increased compression. The head would be a good next mod for you, along with reeds

[250RTONE]

So would 280 manis be fine......?

[sheefreak]

Is that what you previously ran before bumping the timing, or is everything new? That sounds close for your elevation. Fatty's like a little bigger pilot, but at your elevation you might be able to get away w/closing your airscrews down a bit. Needle in stock pos, maybe move clip down one toward the pointed end.

[250RTONE]

The jetting is as suggested by FMF, just curious if i should change anything.

[cdwood37]

i am at 5500 feet and that jetting seems a little fat to me i was running a 250 main up here so maybe a 260 main would be closer try a 270 and work down

[cudaz101]

I ride @ 4K alot and run a 290 clip in 3rd position...But I run a K&N with no lid and +4 timing.

 

I think you are at a good starting spot. Regardless of what you decide to start with you are going to have to change it a couple times before its right anyways.

 

 

Brad

[250RTONE]

What should my air screws be at...?