will this work?

**ridinmy300** · 10-13-2002, 09:47 PM

I have a 300ex...White brother pipe uni filter and uni air box...would i be able to put a 400ex carb on it? If so would it make any kind of performance increase or is it a waste of time and money? Thanks

**own2424** · 10-13-2002, 09:55 PM

yea, Ive heard of putting a stock 400ex carb on a 300ex. You might have to change the jetting though...

10-13-2002, 10:05 PM

ive heard of it too....depends on what uve got done to yer motor too

**warrior86** · 10-13-2002, 10:42 PM

Why don't you just get a bigger aftermarket carb?

**GT300** · 10-14-2002, 09:35 AM

It will work. If you do it be sure to get a 350x air boot for it. The 300 air boot is too small and will fall off. An aftermarket carb for the 300 is more expensive than a 400ex carb and performance is around the same. You can get them for around 50 bucks off of ebay since a lot of people change their 400 carb anyway.

**chavez** · 10-14-2002, 09:58 AM

i put a 400 carb on my 330 a few years ago i noticed better throttle response if my memory serves me right we got the airbox boot to strech over the carb and used a bigger clamp

**GT300** · 10-15-2002, 02:18 PM

I heard that it falls off when you jump.

**chavez** · 10-15-2002, 03:47 PM

i used a radiator hose clamp and run 2 1/2 hour hs never fell off . barrow sombodys carb and try it for a day what is it going to hurt

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