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Re: [turbobike] Carb Question

Sun, 21 Nov 1999 10:38:14 EST

In a message dated 11/19/1999 23:56:32 Central Standard Time, ABNZX9@aol.com 

<< Now for another question how about intake plenum and attaching it to CV 
 carbs?  Should I buy a set of velocity stack and machine them in order to 
 an intake plenum to the carbs that way?   I have a feeling that the intake 
 plenum I am currently using is robbing me of effieciency.

You raise another interesting possibility.....If you can encapsulate the 
entire carburetor within a plenum, and then pressurize the entire plenum, you 
eliminate the need for separate pressurization lines for bowl vents, CV slide 
vents, etc., as you would have equal pressure operating on all sides of the 
crab.  The pressure in the venturi would be lower than the other areas, which 
is how a carb works.  Your next problem is then to seal the throttle cables 
and fuel lines where they pass into the plenum.  I've seen ram air setups 
like this.  It seems to me that a turbo plenum could get away with being less 
aerodynamic internally due to the mechanical pressurization.

Just my .02.........lots of book knowledge and reading, I've never built a 
turbo bike (but I have a KZ 900 motor in pieces, bead blasted, for a future 

'99 M2 Cyclone
'87 KLR 650 Urban Assault Vehicle
'78 KZ900 bike in boxes