so can you use hose (graden hose i mean) for the oil or is that heavy duty hose is that the oil thing on the top of the cover

Yes, you could use garden hose. That's the breather tap on the rocker cover.

The angle and the straight path into the chamber without deviation as in the webers is why they make 14hp more in same setups.

straight path??? you mean apart from the 45 degree angle (vertical plane) from manifold to port face? there's absolutely no way the A series head can be modified to allow that imaginary line the carb-manifold creates to continue as a straight line to the back of the inlet valve.

btw, that's an awful looking manifold. big square boxes to allow for the misalignment of the equally spaced carbs to the closely spaced inlet ports - that would flow well! why on earth didn't they make a proper manifold for it? It would have been so simple. I'm betting this one doesn't make 14hp more than a good weber setup...

and just imagine what you could do for $3400 aussie dollars!!!!!!!!!!! (239,000yen)

There are some picures of another FCR engine in Sunny Owners Club Street B110s page.

L18 B110 Jeez man you need to start taking your happy pills again !! The machining of the A series head to shift the port entry angle is possible, I've done it. I would'nt want to pay someone to do it as a machinist's time is expensive. As for dissing the manifold whats your problem. The base that bolts to the head face has been machined from a solid piece of aluminium and the carb bosses have been very neatly welded on to it.To machine the squares round is'nt easy and makes no difference to the function of the manifold. I'm an engineer of 20 years + experience and I would be proud to have produced this set up.

I agree with the happy pills man you take it too heavy when it obvious this person would not use square chambers and secondly the path, alingment and angle dont equate perfect 100% but closer to the ideal than weber setups. A similar manifold setup would cost me $350, carbies Oz Motorcycle wreckers $ 500, tuning $300 with parts and all in oz dollars thats around $1200 sorry I better b right on the ball 1150. Oh thats in Oz bucks.

have a look at the second pic of it on that site. the manifold is machined from alloy blocks, but due to its short length it still has to negotiate 2 pretty tight turns in a horizontal plane to get to the inlet port. And that 'straight path' in the vertical plane looks pretty much like it's pointing directly at the bottom wall of the port to me. You decide whats better, but for my money, as few turns as possile is the go, and those turns should be of the max possible radii. I know they are a superior carb, and have always been popular in Japan, my main objections are that parts, tuning, and expense would be very restrictive here in Aus. Don't get me wrong, they look cool, but it's hard to find a place to slot them in between the cost effective weber/dellorto carbs, and fuel injection for those willing to spend that bit extra money.

The price I gave is converted directly from the site, not made up of imaginary figures plucked from my head.

just curious, do any of you guys who like these carbs so much actually use them?

Any datto lover in Oz with the budget and intentions of dattodisease would never in their right mind even think of spending that much money in yen and mate you never were accused of imagining those figures (just the cost that setup I spent on my previous ride a datsun 1000 with a15 which was less than that figure I gave) however on looking at the second pic this manifold suxxxx my appologies!!! But my mikuni carbs were narrower and did not deviate like this manifold and carbies do. Perhaps this assist the swirl to the heart shaped chamber? but now Id like to see a flowchart.
At similar cost but better alternative would b to insert four tubes into the head and use them as the manifold like in many speedway motorbike engines and peripheral rotaries this way there aint no problems associated with match porting.
I wish Id never sold my previous ride but now with my twin webers I got from my alfa and a restricted budget I cant have that setup. Ideally Id have the same type slide or barrel injection with a small toshiba libretto onboard.
To be anal, one area I dislike about this setup (and 90% of the ones seen) is the lack of airbox to scavange cool air from outside the engine bay.
2. FCRs so Ive been told by many bikeshops is that slide carbies wear out faster, but that i cant prove or cant argue against as I used mine for a year and enjoyed the setup thouroughly.

pretty quick change of mind there D

A picture can tell a thousand words but also fool seasoned engineers however Im just a graphic designer!. If it wasnt for your resoucefullness Id b still dreaming of these and braggin about this company who are likely just to be getting on the bandwagon of its competitor mikuni.
Its incredible how much the second pic reveals, those bastards I hope they sell nil.
The more I look at this extra pics on the link from that page the more I grow to love my webers thanks mate

Hey guys I can't find the site with the other photo your talking about, can you post a link or add the incriminating photo..please.?

Sunny Owners Club Street B110s page.
Hoopsmotorbuild

After looking at the second photo I can see where your coming from. Without seeing the port faces on the head we can't really say how clever the builder is. But to go back to your comment about the 45' angle. It is common practice here to cut the section from the inlet port to the top of the head out in a bandsaw, to make the porting process easier. Once you have taken a deep breath and carved up the head you can shift the inlet ports to where ever you want. Any water jackets you encounter are welded up and it it not unusual to find race A series running "dry decked" that is no water in the head at all. With the water jackets out of the way you can then find a good alloy welder to replace the missing bits.One engine builder here utilises the services of a welder on an airforce base who welds them in a sealed room with a controlled atmosphere !! As Tim mentioned in an earlier post Tony Marsh was running his ports so high the rocker cover was cut at it's base to clear the inlet manifold. Though I suspect that in this case the builder has'nt been that clever. I apologise if I have offended you in regards to the "happy pills" comment but it was not intended to be malicious.

Can you get a shot of Tony Marsh's head or another a-series head to see the result as Ive only heard of it been done to an A.

Here's the other pictures from Hoops:


Keihin flat carbs on A-Series (top view)

hoops website is nla

thinking about trying this setup
su's are inadequate for new cam
and sidedrafts interfere with brake master
don't want to run remote racing resevoirs

At just under 1200 Aussie dollars, if I didnt already have my quad throttle body setup I would jump at this.

Just as good as fuel injection but easier to set up.

The variable venturi carb is a beautiful thing, runs just as well at idle as it does at full throttle.