jetting

[dale grible]

got a fatty and powercore pipe......at fmf the recomended jetting for my lt250r is:

main jet : 240
pilot jet : 37.5

now,..this is for a 70° f ..1500ft....and 32:1 mix ratio..........


question..:...me i do 50:1 mixing ratio.....does the jetting change or i can use the same jet (as listed above)??

also...the needle position : 3rd.........on my needle i have 4 position available..where is the first positon.??.. buttom...or.......top????

thanx!!

p.s. MY ORANGE LT250R IS 98% COMPLETE!!!! PICS ARE COMING SOOOOOON!

[sparkzilla]

I have found very little diference in premix ratio and jetting. When i switched to Amsoil I went to 50:1 and did a plug test a couple of times and it was still fine. So if all u changed was your ratio u should be ok. And u need to hurry it up with those pics

[ChewyR]

That is just reccomended jetting and will be close. If you want it right you will have to jet for your specifics. I'm running a 300 main (but on a 35mm mikuni TMX), so I tend to think that a 240 is too lean.