I don't see where the minor drag from the turbo bearings would cause more
heat than the turbo would lose through the housing.
The housing is a bunch thicker than the pipe & cat that feed it. I do not
see how it would be possible for the exhaust temp to even be the same
post-turbo as pre-turbo, much less higher.
Ron Porter
_____
From: Carter Fuji [mailto:carterfuji58@hotmail.com]
Sent: Friday, May 12, 2006 1:21 PM
To: ronporter@ameritech.net; 'Paul L Fisher'; 'v8sho';
shotimes@autox.team.net
Subject: RE: OT - Where to put EGT sensor
I was always under the impression that the temperatures inside the turbo
were higher then that of the first radius from the exhaust manifold. I had
seen a bench test of a turbo in a Buick engine plant in Michigan back in the
80's that had the actual exhaust side of the turbo glowing red hot after
just a short time running on a stand at a constant RPM. I also remember
looking with amazement at the turbo in the back of several Porsches that
would do the same after a few enthusiastic laps on a road course. My
assumption would be that the slight restriction and energy the gas produces
while spinning up the vanes causes the increased heat, which if there were
any un-burnt VOC in the exhaust would use the Oxygen in the process and skew
the readings to the low side. Just a thought.
Carter
_____
From: ronporter@ameritech.net
To: sho@paul-fisher.com; v8sho@v8sho.com; shotimes@autox.team.net
Subject: RE: OT - Where to put EGT sensor
Date: Fri, 12 May 2006 12:10:22 -0400
Why not get two..one each for pre- and post.
With one, I would go pre-turbo. Gives you the raw reading off the engine,
which IMHO is what really matters. Nothing much should really change
post-turbo.
Ron Porter
_____
From: Paul L Fisher [mailto:sho@paul-fisher.com]
Sent: Friday, May 12, 2006 9:39 AM
To: 'v8sho'; shotimes@autox.team.net
Subject: OT - Where to put EGT sensor
Since you guys are car guys and I trust your opinions, where do you think I
should put the exhaust gas sensor on my TDI? I've heard good arguments for
both pre and post turbo.
Thanks!
Paul L Fisher
Visit my website: <http://www.paul-fisher.com/> http://www.paul-fisher.com
SHOClub Member: <http://www.shoclub.com/> http://www.shoclub.com
Amsoil dealer: <http://www.paul-fisher.com/oil>
http://www.paul-fisher.com/oil
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