I am boring the jets on my '01 250EX and i was wondering how many more thousandths i could bore it and make it just right. Thanks for the info.

 

Well if you havn't done any mods to the intake or exhaust its completely useless. And theres no way the smartest person on the earth could tell u how many thousands only your engine can tell you by the color of the plug.

 

Hi hope you are kidding about boring the jets, jets are only about $3 each, splurg a little!

Also why do you wnat to boring it, new exhaust, air filter?

 

Ive already got a yoshimura exhaust on it and it also has a twin air dual shatfe air filter, thats why i'm boring the jets, I also need to know where i can find a diagram of how that carburetor is built and put together, where could i find one of those?

 

This has to be a joke.

 

No its not a joke its an 11yr old trying to work on his quad.

 

Buy the jets, don't bore them.

 

Haha. Thats pretty funny. How do you buy an exhaust and filter and not rejet?