Ken Waters' Patented "Float
This modification is the brainchild of Mr. Ken Waters, who was
clearly a brilliant technician who has passed away in an unfortunate
accident. I don't know much about his passing. Speculation is
that the accident was not motorcycle related. Reading thru Ken's
posts on the Zx7r Owner's Club Discussion Forum has helped many
motorcycle owners, and myself, understand a load more about how
bike tuning is done.
Principle: (As paraphrased from Ken Waters)
In order to get the pressure in the float bowls equal to the
pressure in the airbox, racebikes enclose the entire carb assembly
in the airbox. As logic, fate would have it we are supplied with
little hoses that run into the float bowls of our carbeurators.
We are going to exploit these hoses to ballance the preasure
throughout the fuel system.
Now, as if knowing the two hoses that appear to come from the
top of the carbs and indeed are attached to the top of the carbs
are the ones we are going to use isn't confusing enough, I'm
going to tell you that they are connected directly to the float
bowls which are at the bottom of the carb assembly. When we pull
the carbs off later you will see that the tap is at the top,
and the orifice is in the float bowl.
It's real easy. Just connect the two hoses that are discussed
above directly to the airbox. There are many opinions about how
to do this, I chose to destroy as few parts as possible in an
effort to keep as many of the stock parts in tact as possible.
I melted one end of a leftover vacuum "T" shut (Upper
Right) and connected it to the hose that used to connect the
evap cannister and intake silencer to the airbox(Upper Left).
Again, trying to keep as many stock pieces stock, I plugged off
the other line to the airbox with a screw(Lower Right). I do
however, suggest using this other line to connect there, as it
can provide a better seal to the airbox. I compensate for this
by using a hoseclamp on the one I used.
Note: No matter how you connect it, connect the line where
the clean air is, between the air filter and the carbs.