Super Jet Mysterious R&D intake manifold

[HunterJ.]

//uploads.tapatalk-cdn.com/20180618/a0a1c80a6eaf05900ba53857aab57410.heic[/
I need help identifying the point to this r&d intake manifold. I had bought this ski previously modified and I had purchased a stock air box for it. Leading me to find this odd manifold. This manifolds “runners” converge almost like a single carb manifold would, placing the carbs closer together than in factory location. I was wondering if anyone has any information on why this design was made? Or its purpose, i I’ve attempted to research the part but can’t find any information on it or any others like it? If anyone knows anything about it that would be greatly appreciated.
-sorry if there’s any errors in my writing.


Sent from my iPhone using Tapatalk

 

[HunterJ.]

I need help identifying the point to this r&d intake manifold. I had bought this ski previously modified and I had purchased a stock air box for it. Leading me to find this odd manifold. This manifolds “runners” converge almost like a single carb manifold would, placing the carbs closer together than in factory location. I was wondering if anyone has any information on why this design was made? Or its purpose, i I’ve attempted to research the part but can’t find any information on it or any others like it? If anyone knows anything about it that would be greatly appreciated.
-sorry if there’s any errors in my writing.




Sent from my iPhone using Tapatalk

 

[Harbor]

I had that manifold and ran aftermarket 44's with a coupler connecting the 2 carbs. That manifold had no cross over channel like a stock one does, most epoxy the cross over closed. To run the stock air box you'll have to change carbs and manifold. Mayb indavidual filters would be something to consider

Edit: found these and they are still availible

http://www.x-h2o.com/index.php?thre...ni-44s-full.189155/#lg=thread-189155&slide=11

 

[yamabro]

If I'm not mistaken,...
That manifold is based or basically a copy of the early RIVA manifold which also placed the carbs close together.

 

[Big Kahuna]

If not mistaken R&D use to make some of the RIVA products, so they may have been on the same spacing. A friend had the R&D and it was a PITA working on carbs. No room to get to adjusters and removing carbs was a bitch.

 

[HunterJ.]

I had that manifold and ran aftermarket 44's with a coupler connecting the 2 carbs. That manifold had no cross over channel like a stock one does, most epoxy the cross over closed. To run the stock air box you'll have to change carbs and manifold. Mayb indavidual filters would be something to consider

Edit: found these and they are still availible

http://www.x-h2o.com/index.php?thre...ni-44s-full.189155/#lg=thread-189155&slide=11

Thank you for the link, I’ve attempted individual filters and They all end up rattling apart within an hour of riding.


Sent from my iPhone using Tapatalk

 

[Quinc]

You are going to want to fix the rattle... Make sure your driveline is straight and shim your engine mounts as needed.

 

[TheBuzzard]

that's the standard R&D manifold. if you take one end of the long exhaust hose off and fold it, its a lot easier to get to those nuts. I use 13mm heads since I have the wrench that has the 45 degree open end along with the straight end. if you use a pick with the nut slid up it, you can get the nuts back on fairly easy too without dropping them a bunch of times. if you use the tau ceti 1.5" shorties, they don't vibrate apart like most. you might be able to use a pair of the stock singe air boxes

 

[CD155MX]

And here I thought all manifold spacing was the same. @TheBuzzard where did you find yourself the smaller head nuts?

 

[HunterJ.]

You are going to want to fix the rattle... Make sure your driveline is straight and shim your engine mounts as needed.

Oh no, everything is aligned. I was talking about the filters, I’ve had 4 fall apart on me.


Sent from my iPhone using Tapatalk

 

[Big Kahuna]

What kind, use to use the old round Tau Ceti and they did not last. Switched to K&N Pro Series and literally would get 10 years out of them.

 

[TheBuzzard]

And here I thought all manifold spacing was the same. @TheBuzzard where did you find yourself the smaller head nuts?

old R&D and BCW manifolds had the close spacing and the runners are curved into the reeds. protec and riva manifolds have wider spacing and the runners are straight into the reeds. supposedly you get better flow with straight. all the newer manifolds with the speed plate are wider spacing. an 8mm nut either comes with a 12mm or 13mm head. the 12mm with the shoulders on them are nice, but I don't have the multi angle wrench for those.they come on kawi stuff. I've got a milk crate full of AM manifolds, Vforce reeds and carbon tech.

 

[HunterJ.]

What kind, use to use the old round Tau Ceti and they did not last. Switched to K&N Pro Series and literally would get 10 years out of them.

Blowsion 2in tornado filters


Sent from my iPhone using Tapatalk

 

[Big Kahuna]

Those are made by Tau Ceti if not mistaken.

 

[Harbor]

The filters hot product sells stay together.. Blowsion's fall apart fast

 

[X2Kid]

If you're not worried about sacrificing any performance gain this manifold might offer why don't you replace it with a stocker so you can use the stock air box you already have?

 

[HunterJ.]

If you're not worried about sacrificing any performance gain this manifold might offer why don't you replace it with a stocker so you can use the stock air box you already have?

That’s what I’m sure I’ll end up doing because I feel there’s no performance gain for this manifold anyway and plus it makes the carbs a pain to work on.


Sent from my iPhone using Tapatalk

 

[waxhead]

Team Kawasaki found a 1.5 hp gain from going back to a straight manifold from what I heard. These manifolds make one cylinder run hotter I cant remember which one. I will not even tune a ski with these manifolds.