Need a place to start! YZ250F/Utah

[bigvt]

I just picked up a yz250F that has some mods done to it. As far as the motor goes, it has a an overbore kit installed (cylindar bore is 2mm over, now 79mm) with a high compression wiseco piston. The bike also has a gytr titanium oval muffler.

I need some advice on jetting for this bike. I normally ride 2 differant sets of elevations, 3500-5500, and 6000-9000. I know these are huge elevation changes, but thats what ya get riding in the mountains of northen utah...

Does anyone know a place to start for both these eleavtions, and then I can fine tune from there.

thanks guys!

Matt

[bigvt]

anybody?

[Wooz]

Lot's of YZ info on this forum if you do a search. I have a 06 WR250F needle clip 2 from top, 160 main, 60 leak, 40 pilot, fuel screw 1 turn out. Runs sweet @ 6,500 -9,000.

That should at least get you started...I have the same altitude issues in CO. Looking fwd to fuel injection.

[bigvt]

Yea, i just started riding out here and efi would be so sweet for this neck of the woods...