From: "Marvin Kaye" <marv@lancaironline.net>
Subject: Re: IV-P Exhaust Tunnels
To: lml
Date: Fri, 02 Dec 2005 18:13:17 -0500
Message-ID: <web-861171@logan.com>
In-Reply-To: <9D38C54E-C8FF-4E38-AA7D-CB00B87D1AD0@adelphia.net>
References: <list-860204@logan.com>
 <9D38C54E-C8FF-4E38-AA7D-CB00B87D1AD0@adelphia.net>
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Posted for Gary Casey <glcasey@adelphia.net>:

  Craig,
  I'm sure that .020 is plenty of clearances as you just don't want the
  aluminum to touch and even if it touches it a few spots it will still  do 
the
job pretty well (of course, it touches where you bolt it in  place).  I would
certainly worry a little bit about vibration, but if  the aluminum is curved
it will be pretty stiff and not subject to a  low frequency resonance.  I'm
thinking about clamping an aluminum  shield to the pipe itself, but you would
have a problem doing that,  what with the odd shape of the turbocharger.  To
use an aluminum  radiation shield on the pipe it would be necessary to use
stainless  pieces as spacers since the pipe will be at a temperature higher
than  the melting point of aluminum.  And then clamping a shield to the  pipe
would expose it to extreme vibration, requiring a sturdy  clamping system.
  Advantage is that it would reduce the temperature  of all nearby engine
compartment components, not just the cowl.
  
  Gary Casey

> I am thinking through adding a .020" thick stainless heat shield