Quick Question...

[slipp]

My current setup:
400ex -
slip-on exhaust (scorpion, race use only (no spark arrester))
stage 1 hot cam
11:1 wisco
jetted stock carb
open air box
cdi box

- btw i recently learned that my bike does not run well on 87octane. just a lil' fyi..

my question: is it worth me upgrading to an 450r carb? considering if i do i will put a complete exhaust system (headers and all). i have no intentions of boring or port n polish at this time. simply, will i see an increase in proformace with the 450r crab? or is it to much for my lil' basically stock 400ex?

thanks for you time.

[Bill Fuller]

On the stock bore and with the basic mods you have I would stick with the stock carb. JMO

[slipp]

I see, Thank you for your response.

yeah i ran my 400ex accidently on 87 octane instead of my usual 93 octane and it bogged so much and what not. Ran like shat. I hit 3rd gear and it felt like it didnt move lol. It putted and ran terrible on 87.

[Rip_Tear]

It'd be the 11:1 piston that doesn't like the 87 octane...

I'd imagine you'd see a decent difference with the 450R carb.

Btw I run 87 octane with a pipe, air filter and hotcam stage 1 with no problems.(it's also jetted correctly)