Not to continue an already overextended thread, but doing the math is what
separates the successful turbo (or supercharger) installations from the ones
that blow up after 30 seconds of full throttle.
Theo
-----Original Message-----
From: Steve Laifman [mailto:Laifman@flash.net]
Sent: Sunday, December 17, 2000 12:16 PM
To: Jim Ferrara
Cc: tigers@autox.team.net
Subject: Re: Density versus Boost
Jim,
Thanks for the work you have done on boost formulae, and the exacting
analyses.
I do not want to get into any discussion here on who is "more right" on
a simple statement about the order of magnitude of the boost issue. It's
simply too complex and inappropriate for this forum.
But------ if you carefully read my original message it says "Neglecting
thermal losses, of course."
This was meant as a statement of the gross theoretical potentials,
whereas your educational formulae makes a great use of the expression
"T2/T1", a compressor thermal rise due to adiabatic compression --
purposefully neglected in my statement for simplicity. Then you add
more "thermal losses" to get to what Doug admittedly stated was an
"inches of mercury" misspoken statement, not a psi boost statement. You
use centrifugal compressor examples, and the Miata accessory units I
drove were roots type compressors, not centrifugal turbos (not that it
is germane, here).
Peace, and lets try to keep the list to Tigers.
--
Steve Laifman < Find out what is most >
B9472289 < important in your life >
< and don't let it get away!>
http://www.TigersUnited.com/gallery/SteveLaifman.asp
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