XCredrider
04-06-2005, 02:41 PM
I recently got a 250r that was jetted for summer weather in Indiana with 20:1 oil ratio. It has a stock carb, boyesen reed cage and reed, kran it racing mid and top porting, cool head, and full FMF pipe and silencer with a K&N filter and outerware.
It had a 155 main jet in it.
Well it was low on comp. so i put in new rings and it was perfect clearences. I also put in a cr 250 gasket in it and took off the snorkle for the air box. I also moved to Florida with the gas mixed at 32:1.
My question is where will I have to go my jetting. I read in the manual that you go down 1 main jet size for sand riding which is where I ride. So im not sure where to start with my jetting. It runs good now except at the top end. It cuts out and won.t pull past about 3/4 throttle. Will i have to change my jetting because of compression? If so which way. Let me know if you guys have any idea. I know you cant tell me which jets to run but maybe which way to go. Thanks in advance and sorry for the long post.
Kody
It had a 155 main jet in it.
Well it was low on comp. so i put in new rings and it was perfect clearences. I also put in a cr 250 gasket in it and took off the snorkle for the air box. I also moved to Florida with the gas mixed at 32:1.
My question is where will I have to go my jetting. I read in the manual that you go down 1 main jet size for sand riding which is where I ride. So im not sure where to start with my jetting. It runs good now except at the top end. It cuts out and won.t pull past about 3/4 throttle. Will i have to change my jetting because of compression? If so which way. Let me know if you guys have any idea. I know you cant tell me which jets to run but maybe which way to go. Thanks in advance and sorry for the long post.
Kody