350x carb on 300ex

[bigfoot300ex]

does anyone no the size of a 350x carb.
how much of an improvement would it be on a 300ex

[nathanm82]

I am not sure of the size of that carb off the top of my head but I do know that a 32mm carb works nicely

[wilkin250r]

I wouldn't recommend it. If memory serves me correct, the 350X carb doesn't have an accelerator pump.

I would imagine that the 350X carb is a little bigger, so you MAY see a little more top end, but without the accelerator pump, you WILL notice a huge decrease in throttle response.

[Kawboyz beware]

according to the service manual it a 31mm

[300expower]

400ex carb is the **** to do

i think it's a 35, but not sure

and they'Re cheap

[NikNacs67]

Think a Warrior carb will work. It has an accelerator pump and is 36mm. I doubt it will line up tho.

[C41Xracer]

I had a bored and stroked 395 300ex with 12:1 piston full race cam ported and polished head with a 36mm minkuni. It dynoed at 35rear wheel hp then i switch to a 39 FCR and it dynoed 38 rwhp. For what you are doing I would say a stock 400ex carb or a 36mm from any manufacture.

[bigfoot300ex]

i guess i will go with the 400ex carb
my uncle had a 350x carb and i thought i would just see
if it would help me any
thanks

a guy i race with has a 400ex with a 39mm fcr
i will ask him if he has his stock carb

[TheX1992]

go with a 400ex carb. need the 350x airboot. i tried boiling and stretching my boot to fit, but that didnt work.

[bigfoot300ex]

Originally posted by TheX1992
go with a 400ex carb. need the 350x airboot. i tried boiling and stretching my boot to fit, but that didnt work.

thanks i didnt even think about the airboot