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Hey guys I race micro sprint cars and run a 2001 cr250 motor, I have it stroked to 270cc and run a bore diameter of about 68mm. Runs on methanol and its built with lightweight everything and feel I've hit the top as far mods for this thing go but I want to squeeze every inch of power I can out of it. Any suggestions?

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Maybe a head (vhm etc). What carb are you running? Could you go bigger? I'm guessing it's ported already. Is that chamber made for the 270? What about a programmable ignition, you may be able to squeeze a little more there. Reeds? Have the cases been flowed?

It's kinda hard to know what to recommend without a build sheet that details everything. Even then without being involved We don't know if there's still more to be had from things. How much is it making now? Do you have a dyno sheet?

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