FCR 35mm

Hello everyone , I have a friend in the U.K who has a set of Keihin FCR 35mm carbs by Bito R&D anodized, for a kz1000 ,They are in nice shape Lightly used, he's willing to sell them to me for what I think is a descent price. still 800 bucks shipped isn't that cheap  , they were only used lightly when he bought them , Currently they are on his shelf for a build that got canceled. I have never used FCR carbs before and wondering if anyone had any experience with them. I have been Looking for A set of carbs for an Eddie Lawson replica track bike build with a big bore UT 84 head big valves, lightly ported will have performance cams , I would like to build eventually. I was thinking about trying them out on the current 1980 Moriwaki tribute I had built since its a big bore with a ported head and bigger intake valves by the late Larry C, currently running 410 ape cams . I think the size of that engine should be ok for the carbs and currently running rs34's .  Does anyone have any experience with FCR carbs?  I do know parts are not so readily available in the USA for these and new they are way expensive, I have seen the price in Japan for the FCR 35 dark anodized by Bito R&D and they are big bucks for me to acquire like over 1600 and that's before shipping and tax , I paid 425 for my mikuni rs 34's in 2010. I cant justify spending 2 grand on a new set of FCR's. Any way just looking for some thoughts on the FCR's as far as tuning and performance, I know they don't have a choke but that's not an issue and I verified there is no wear on the mid bodies were slide rollers Track like I said they are very lightly used. Thery are close to new condition. I think the size will be fine its just I have no experience with this Carb's manners and figured I'd ask , I did notice Bulldock builder in Japan had been using then on there builds .  Thanks 

Can't help you with the FCR's but I would like some more pics of the Moriwaki for a BOTM feature (have emailed you a couple of times)

I don't recall anyone on here recently ever having tuning questions on them as they are more popular in Japan. The only thing you might have a issue with is buying all the brass required to tune a Keihin product if you only have Mikuin jets. As far as performance there may be a slight gain at high RPM, maybe a couple of HP over the 34's. They are a nicer looking carb, draw the eye more than a RS set, look more "racy".

Hey Wookie sorry for the delay for the pics , I will send some by the end of this week , I have made the purchase for the carbs as I said want them for a future project, but going the get familiar with them on the Moriwaki bike . Injected : you weren’t kidding there is very little information on these carbs in the U.S , everything is in Japanese makes it very difficult and jets are expensive. , everything for theses carbs are expensive. There is no way I would buy a worn set to restore. I only purchase these because they had little use , these were originally sold by Jb bito r&d so hopefully jetting is close , main jets are like 7 to 9 bucks apiece, and that’s just mains , I have no clue to the jetting till I hook them up and do some testing . Might get super expensive quick 

Hey Dave your message says This (message contains secure information) don’t know if you tried to reply?

I have a set of FCR 39s for my KZ750 big bore bike. They're seemingly the prefered choice of aftermarket carbs for singles and twins. I think the main reason you don't see them for 4 cyl more commonly is simply the cost. They are quite a bit more complicated/refined than the RS series carbs or the CR series carbs. They also have more variables for tuning - which may be a good or bad thing depending on who you are. Its always easiest to get some dyno time to dial in carbs.