Crf 450 carb on 400ex

[PismoLocal]

Has any one tried running a crf 450 carb on a 400ex instead of running the 450r carb? Is the Crf carb the FCR 41mm?

[GPracer2500]

The current CRF has a 40mm FCR. Not sure about past years but I don't think they ever had 41mm FCRs. They are all FCRs though.

A 41 FCR is awfully big for an EX anyway.

[pr400ex]

i have an fcr 41mm carb on my 416ex and it works alot better than the stock.. the accelrator pump is awsome all you do is drop down a few main jets