Wr250f Jetting

[quinny]

just looking for a jetting set up for an 09 wr250f with full gytr exhaust system an yz piston.

I've put in a 45 main jet an played with the needle in all spots, i've gone for the middle clip but it still seems to not be write. it just won't go into the top 3/4 of the rev range with out clutch work an under heavier load like going up hills it gets a lot worse an won't pull in the top end
Is this jet related? or i've been reading something about a faulty regulator causing similar issues????
Any ideas?

[Dr Phil-wr450]

Originally Posted by quinny

just looking for a jetting set up for an 09 wr250f with full gytr exhaust system an yz piston.

I've put in a 45 main jet an played with the needle in all spots, i've gone for the middle clip but it still seems to not be write. it just won't go into the top 3/4 of the rev range with out clutch work an under heavier load like going up hills it gets a lot worse an won't pull in the top end
Is this jet related? or i've been reading something about a faulty regulator causing similar issues????
Any ideas?

40 leak
45 pilot
170 main
clip middle and adjust to location
adjutable fuel screw 2 turns out