400ex w/FCR39 feels like a 2 stroke

[Giz400ex]

I recently got a chance to give her a rip and it feels like it has a powerband like a 2 stroke. It seems like when your cruisin along and you gas her, she'll take off and a couple seconds later it really takes off. Is this normal for an FCR or am I just lucky??

just depends what combo u use on ur bike...and i seriously wouldnt doubt that be normal for an FCR...that is y i am gettin 1 for myself ;)

[300exazzkikr]

Originally posted by Giz400ex
It seems like when your cruisin along and you gas her, she'll take off and a couple seconds later it really takes off. Is this normal for an FCR or am I just lucky??


That could be your jetting.

[Doibugu2]

I've read that some of the guys with the FCR had/have a slight hesitation problem. Like a 2 sec delay when you from from 0 to wot.

I guess the air fuel screw that C&D are selling is supposed to help cure that.

[Colby@C&DRacing]

The fcr carb does make the bike pull allot harder. But the lag in hit can be fixed. Some of it with jetting but the fcr screw helps allot.:)

[Giz400ex]

Originally posted by Colby@C&DRacing
The fcr carb does make the bike pull allot harder. But the lag in hit can be fixed. Some of it with jetting but the fcr screw helps allot.:) As for the screw, turn it out or in?? and how many times??

[bklyn400ex]

will the screw affect if the bike runs lean or rich??

[Max400]

Where did you get your FCR ??

[bklyn400ex]

can u help me with a simple jetting ques im gettin really frustrated

thanx

you can buy the fcr from pretty much neone....duncan racing...ct racing...sparks racing...magic racing...neone u can think of...the jets will be bigger because it is an aftermarket carb and i am not sure what the screw is for cuz i dont have one of these yet...lookin to get one in a month or so....:macho....all i know is that if u set the screw right u wont have that lag in between your throttle and the response of the engine