HELP 450R carb on 440 jetting questions

[red426ex]

I have a 2000 440EX with about 5 minutes on it with a stock carb jetted up. i have a 2005 450R carb waiting to go in but i need some help on jetting.... what should i run for main and pilot jets? ive read on here that the stock needle will be fine... i have a 440 kit 11-1 compression stage 2 hotcam hot-rods crank and rod, no lid on airbox slip on white brother E2 muffler and cometic head gasket and ported and polished head... i figured the jetting would be fairly close to a 450R but not positive. Any help will be greatly appreciated.

Thanks a bunch in advance to anyone who can help

[lpmaster]

start with a 48 pilot, 4th notch on needle and a 180 main, but thats not perfect just a good starting point


im running a 210 main at sea level in mine.....a little rich

[red426ex]

hey thanks a bunch LP that will at least get me started and thats what i needed just a starting point seeing as every motor is different especially at different elevations and such...

But just to make sure that it is the khein jet size correct? cause thats what im running

thanks a bunch
casey #228

[CHEVYZ]

175 main. Everything else was left stock. Runs great like that.

[lpmaster]

yep my post is for kehin jet sizes