It looks like I will have to bore my 250 cyl at least .020 maybe .040 over. What jet change, if any, should I expect to have to do? I've always been afraid of running a 2-stroke lean for any peroid of time.

Thanks again!

 

None, unless you change the way the fuel flows in or exhaust flows out. No need to change because you bored it out to an over-size.

 

i agree

 

Yep, as long as you don't change the way it inhales or exhales you are good... I think they are jetted rich factory anyway. Good Luck