400ex carb on a 300ex

[YZ400EX]

How well would a 400ex car work on a 300EX?? What about on a 350X?? let me know your suggestions..Thanks

[YZ400EX]

Anyone?? I would like to know if there would be any advantages or disadvantages to this..Anyone??

[fastkid400]

I did it on my 250x andit helped a shat load! lot of bottem and top end power. It's also a cheap solution instead of buying an aftermarket larger carb. it mounts right up to the intake boot, but ull either have to get a 350x airboot(which didnt work for me) or stretch out the stock one like i did, and use a larger hose clamp, but it helps alot and i highly recomend it!

[YZ400EX]

Ok Thank you..

[30ex-man]

how would you jet it when you do this

[dirtmomma]

I also have this mod & it is GREAT!! Wouldn't go back to the stocker!! As for jetting I have a 150 main in mine, not sure where the needle ect is though :o I jsut boiled my boot & stuck it on!!