RE: Another O2 thing on Ebay

From: raymond.irons@gm.com
Date: Tue Jul 16 2002 - 10:47:09 EDT


>This is where you will need to run a dyno test before and after. Looking
at
>this device I would consult with Bruce Bridges on this one, since his
>background is in flow dynamics.

>--------------------------------------
>Steven St.Laurent

Ok Steve,
      You got me confused now. Are you talking about the O2 sensor thing on
E-Bay or the Tornado? As far as I know there is not a dyno shop close by to
where I live but then again, I haven't really looked either. As far as
consulting with someone, while I appreciate the advice, I think I'll stick
to my own judgement on the applicable principles. You mentioned sometime
ago about all the Tornado would do is restrict airflow and introduce
turbulence. First let me state this, I retired from the USAF, my active
duty job was aerospace propulsion craftsman, in other words, a jet engine
mechanic. You have to remember that airflow and fluid flow, although
similar, are different. On every jet engine built, except for a ramjet,
airflow is directed by inlet guide vanes. These vanes are designed to do 2
things: 1) Get the airflow properly directed onto the compressor or turbine
blades, 2) Minimize the possibility of a stall. Some of the newer engines
use a variable geometry vane system to do this, not only at the inlet, but
through several of the first stages of compression. Looking at the Tornado,
you could be correct in stating that it might restrict airflow, but any
restriction is minimal and is offset by its introduction of directional
airflow. The installation instructions that came in the package said to
install the Tornado in the hose going from the air filter box to the air
hat at the inlet end. If you were to install it there, I could see where
any effect would be negated by the shape and length of the hose. However,
when I contacted the company prior to installation, they instructed me to
install it in the exit end, right next to the air hat. In that location,
you get more of the directional airflow into the air hat and from there
processed into the intake. IMHO, the Tornado, installed in the exit of the
air duct prior to the air hat, actually smoothes out and directs the
airflow as I believe it becomes disrupted by the flex channels in that
hose.

Ray Irons
Dover, DE



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