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Re: [turbobike] Carb Question

Bryan (bgoodwin@iquest.net)
Sun, 21 Nov 1999 13:37:26 -0500

I think the only problem you would run into there is that the volume of the
airbox would be too large. This might cause the turbo to boost later.




At 10:38 AM 11/21/99 EST, FFDennis@aol.com wrote:
>In a message dated 11/19/1999 23:56:32 Central Standard Time, ABNZX9@aol.com 
>writes:
>
><< 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 
>fit 
> 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 
>project......)
>
>Dennis
>'99 M2 Cyclone
>'87 KLR 650 Urban Assault Vehicle
>'78 KZ900 bike in boxes 
>
>
bgoodwin@iquest.net
FZR1000 turbo EFI
(aka The Money Pit)