Subject: Exhaust wrap
From: ACRE
Date: 10/17/2003, 8:15 PM


Steve Brooks wrote:

I'm looking for suggestions on exhaust wrap, i.e. what is the
best one to use.  Has anyone used one that has held up really
good, or is there one to avoid that doesn't work well.

I'll be running a turbo, with a "J" pipe out of the turbo exiting
out of the bottom of the cowling.  I'm looking for something to
wrap that "J" pipe in.

Thanks in advance,
Steve Brooks
Cozy MKIV
13BT

snips....

Reeves Callaway wrote:

When it comes to heat insulation , especially for turbos,  a stainless
321 sandwich construction of foil and alumina silica is coolest
(pardon the expression).
Of course, an air gap is always the best,  but in areas where that is
not achievable,   contact shielding either the offender or the offendee
is next best.
The folks at Thermal Structures have been making our stuff for 20
years, and I'm sure have saved the collective butts of many a Callaway
twin Turbo owner.  See http://www.thermalstructures.com/foil.htm

 From the photos it looks as if the downpipe on this aircraft is mild
steel.  MS has no place in a turbo application, even on the relatively
cool TO side. 321 is the material of choice, and if its going to be
encased in a form fit shield,  it's a must.

Reeves Callaway

Roughly what would be the cost for a custom version of this beautiful heat
shield Reeves?

Paul Lamar


Steve Brooks wrote:

The downpipe is 321 stainless.
Steve Brooks

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