Following extensive liason with airflow specialist's in the Netherlands I have finally designed an airbox of correct capacity for the ZX-12R. This box is designed to fit onto the trumpets using the original Kawasaki rubbers and weighs less than 1Kg.

This design is proven and takes filtered ducted air from the front of the car into the throttle bodies.

Any thoughts would be appreciated
Rescued attachment zx12rairbox.jpg

where exactly is the air coming from.
you really want it from outside of the engine bay.
eg: cool air =better combustion

It's not visible in that drawing but is in the below drawing. The air is fed to the chamber from a nose mounted K&N Cone Filter which is ducted to the chamber using 2" hose.

Inside the chamber is the inlet temperature probe for the ECU.

HTH
Rescued attachment zx12r-2.jpg

HI you say the box is fed by a 50mm pipe is that ok as the TB must be at least 40mm each making that 160 mm of air or am i wrong ? im in the middle of donig the same on zx9r carbs i would like your thoughts please Graham

[Edited on 1/1/06 by jacko]

I am considering 4" ducting for this reason until I get confirmation - possibly not 2" as I suspect; as you; that 2" will restrict flow.

[Edited on 1/1/06 by Genesis]

Hi Genesis

Do you have any more info on what these airflow specialists told you, any equations etc that we could use for other engines?

cheers

Chris

Chris (Mason), Demon Thieves stuff is done by Reverie. Have you had a look on their website for something suitable?

Link

[Edited on 1-1-06 by Hellfire]

ReVerie stuff looks good but flipping expensive !!!

Yeah, they don't look to difficult to copy, err I mean make

Looking at it again, that Mondello intake scoop does look quite complicated but I'm sure Triton would be up for the challenge.....

Phil

[Edited on 1-1-06 by Hellfire]

Hi Genesis

What file type is that Cad file. I would like to help produce a working prototype. And with my access cad software, tig welders and lazer cutting etc. I think I could help. Is there any chance you could email it over so I can have a look.

Carl

Do you have a vested interest in a ZX12R airbox then Carl

Just a note re: diameter of air pipe to the airbox: the fact is, each cylinder sucks in air in turn so from a 'restriction' viewpoint a pipe not much bigger than 40mm would do. If you look at the choke size on a single carb with distributing manifold & compare to choke sizes on DCOEs (carb for each cylinder) they're the same.
cheers
Bob

quote:

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Originally posted by Bob C
Just a note re: diameter of air pipe to the airbox: the fact is, each cylinder sucks in air in turn so from a 'restriction' viewpoint a pipe not much bigger than 40mm would do. If you look at the choke size on a single carb with distributing manifold & compare to choke sizes on DCOEs (carb for each cylinder) they're the same.
cheers
Bob

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Been offline a while so couldn't answer any questions... the volume of the airbox is paramount to get a good power figure. As the ZX12 doesn't have a speakable airbox as it uses the frame, the size replicates the system volume whilst being able to fit under a bulged bonnet.

quote:

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Originally posted by carlgeldard
Hi Genesis

What file type is that Cad file. I would like to help produce a working prototype. And with my access cad software, tig welders and lazer cutting etc. I think I could help. Is there any chance you could email it over so I can have a look.

Carl

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quote:

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Originally posted by G.Man

quote:

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Originally posted by Bob C
Just a note re: diameter of air pipe to the airbox: the fact is, each cylinder sucks in air in turn so from a 'restriction' viewpoint a pipe not much bigger than 40mm would do. If you look at the choke size on a single carb with distributing manifold & compare to choke sizes on DCOEs (carb for each cylinder) they're the same.
cheers
Bob

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Correct, if you look at the inlets on most airboxes they aren't as large an area as more than 2 chokes at most...

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I will have a vested interested on Saturday. You could try to exporting the file as an IGES file But I can work with DXF,DWG,ITP,IAF. I also know of users with Soildworks so I should have no problems opening your files.

Carl

quote:

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Originally posted by carlgeldard
I will have a vested interested on Saturday. You could try to exporting the file as an IGES file But I can work with DXF,DWG,ITP,IAF. I also know of users with Soildworks so I should have no problems opening your files.

Carl

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Can you not just goto File,Save-as and then in the drop down menu below where you put the file name select iges file. Or just email the soildworks file to Hellfire or myself and we will convert it. I think Phil (Hellfire) has access to somebody with solidworks.

Carl

Hello,


There should be a larger airfilter in front because of size and normal is there the RAM airsystem.

I've got a 11 cm airfiler.
Cool thing about it is that you can weld the compleet airbox and assembel the trumpets thru the airfilter hole.

Smartripper

quote:

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Originally posted by Smartripper
Hello,


There should be a larger airfilter in front because of size and normal is there the RAM airsystem.

I've got a 11 cm airfiler.
Cool thing about it is that you can weld the compleet airbox and assembel the trumpets thru the airfilter hole.

Smartripper

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No trouble with welding 1.2 mm alu, just make sure it's stays flat because it wil warp if not done right.

Therefore let it make for me instead of trying 3 times and then let it make for me.

It's not so easy as it looks like.

Daniel