Idetify this FCR

Hi boys, looking for some help and hoping you fellers could assist me.

I bought this carb last year to install on a Z400 with a 434 engine bore,

12.2-1 compression, both Hotcams, full Trinity Racing pipe and running no Airbox.

When I bought it, the kid who sold it to me said it had the Boyesen Quickshot cover on it. The AP cover is for sure some other metal than the rest of the carb body so I am assuming it is aftermarket and is possibly the Boyesen 1 because it doesn't look like the boyesen 2 or 3. I included some pics to aid in the identification.



I am also curious to know what year of bike this came off of. If I remember correctly, the kid told me it came from a Yamaha YFZ but what year I don't remember. I want to know this for the identification of what jets to buy. **EDIT** Carb has a P/N stamped on the body reading 5TGC 30UG13

Either way here are pics I took of the carb.





It's not a "Boyesen" cover... but it's not stock.

That carb is off of a 2004/5 YFZ450 quad. It can be made to fit... but I hope you got it cheap, because it's going to need a little love to make it work. But... it will work just fine.

This thread should answer all your questions. But... PM me if you need some more info.

Thanks Doc. That is a pretty good thread you drew up. I like your approach to the typical forum answers too. There can be some real smart a$$es on here sometimes.

As for the application on the Z400, I already have had it running. The throttle cable is custom, head to carb boots are custon and she fits tight but she does fit. On the Z they have this black box that gets in the way of tuning the AP. Lots of guys have tried to relocate and remove it with minimal luck so that is really the only pain of having this carb on the Z. But there performance gains are just unreal. I used to have the Edelbrock on it but others turned me to the FCR. Much nicer.

In the pics you can see where I removed the TPS electronics to make more room.

Seriously man, I really appreciate this bit of info. This will get me moving in the right direction. I will PM you if I have anymore questions.


Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Similar Content

    • By Sammy_1101
      Hi Guys,
      So I recently bought a 1997 XR400. I've done some research into getting more power through some basic mods and rejetting the carbs. Though all of the ones I've found have been for post 98 XR400s so the stock carb set up is a lot different. Usually people are opening up the airbox, exhaust ect. ect. and Jetting their carbs up to 160/162 for mains around 60 ish (I think) for the pilot. However for the 97 model this is close to stock for the jets.
      So essentially what Im asking (Just to cut to the chase ) Has anyone got a 96/97 (maybe 98, not sure) XR400 and has done these similar mods, and what sort of jetting have to done as a result.
      Thanks in advanced, also its my first post so apologies if I havent done everything correctly.
    • By Jturn
      38MM Cast SmartCarb. Purchased a couple years ago for a yz250. Don't have the bike anymore, and it has been sitting around for about a year. Used, but in fine working condition. You can also purchase a different needle for different bikes, as well as rebuild kits from their website.
      Asking $250 shipped to continental United States. I can arrange other shipping options at the buyers expense.
    • By faizakhtar125
      Hey guys I just bought a bike last night. So the seller said the bike will turn on but then die. We didn't try it because it was really late at night and it was raining (seat was wet). But he said if you bump start it, it will turn on and ride. So what do you think the problem is? I just want to make sure it runs... I probably won't be able to bump start it till Saturday (rain)... It's a four stroke, and I know absolutely nothing about them. Thanks.
    • By knotduke08
      I know this topic has been discussed in the past, but I have not found any options available for the new 2018 bikes. I live and work for a new Beta Dealer (Auburn Extreme Powersports) in California, and we are having a difficult time mapping the RR-S bikes for full FMF exhausts. We have tried contacting Beta Support several times for this issue to no avail, and we typically are given the runaround when transferring to techs and secretaries. From what we can gather, the FMF flash is designed for the RR bikes, but not the street-legal counterparts. Every time we try to install the FMF map onto an RR-S errors occur, and the programmer screen goes virtually blank. We have heard through the grapevine that some are using the RR maps on the RR-S with success, but we have yet to try it, even on our own bikes for fear that it will permanently erase or damage the CDI. Any and all help or suggestions regarding this topic would surely be appreciated! Thanks, Ben.