Intake idea

TexasKZ wrote:

Seems like that would add turbulence to the incoming air. Also, one filter will flow more air than a carb can use, so I do not see the advantage of adding more flow.

DoctoRot wrote:

Kz750 twins have a hose connecting each intake but it’s behind the carb on the cylinder head side. It’s just a hose that connect the two vacuum ports that you use for syncing the carbs.  

this guy made his own air box
kzrider.com/forum/3-carburetor/599569-custom-air-box-for-kz440

 

Nessism wrote:

Back in the day, I had an XS400 Yamaha.  The stock air filters were quite expensive, so I bought two cheep uni pods, and clamped them onto the stock intake runner tubes, in a configuration much like you reference.  The bike ran fine.  Much better in fact than with the pods attached to the carbs.  That was a nightmare.  

F64 wrote:

Try it out. Take notes.
Change the pipe size. Take notes.
Remember, the carbs don't just suck. They blow too.

I used an oscilloscope to balance my carbs 2 weeks ago.
The pulses at the carburetor look like a sawtooth pattern.
Alternating between vacuum and pressure.

I guess i should put the pressure sensor in the airbox to see what the pressure/vacuum looks like on this side of the carb.
It's probably more subdued as it's a larger mass of air.

More testing I guess.