In a message dated 96-08-28 15:07:06 EDT, you write:
<< I've been wondering if it's possible to install heat shields over the
> mufflers similar to the ones on catalytic converters. Are the shields
> for catalytic converters made of a special material or are they just
> shaped to reflect heat?
>
Interesting concept. I would be interested in hearing the answer.
>>
Fellow Hot Footers-
I can only speak from limited experience as I try not to toy with any of the
"newer" stuff unless I have to. I have seen simple aluminum formed plates
which are bolted to both the upper and lower sides of the offensive hot unit.
This approach is usually seen on a unit which has some sort of airflow around
it. My guess is that these shields are utilized to maintain interior heat and
to keep an outer "shell" below combustible levels, eg, for grass fire
protection. I do not think that they would reduce the radiant heat to a floor
panel, unless there was significant airflow around the unit.
The second type of shield that I am familiar with is used more often between
a hot unit and the floor pan or driveshaft tunnel where airflow is
restricted. I think this type of unit is more along the lines of what is
needed for heat rejection on the interior of any car. This type of unit is
usually mounted to the body of the car and does not actually mount onto the
hot unit itself. The types I have seen seem to work quite well for heat
rejection when mounted this way. The shield itself is made of what seems to
be very thick "aluminum foil" like substance. They are made of two layers of
this pliable material, with a very thin air layer between the two layers.
These shields are very form fitted and maintain the thin air space between
them by additional "folds" in one layer or the other, so that they maintain
that thin space. My guess is that the air space is approx 1/8" to 3/16" over
the surface of the shaped shield.
If you wanted to experiment with this type of shield, I would suggest that
you visit your local high end body shop and ask them to save you a couple
that need to be replaced. My experience is that they bend VERY easily and are
often replaced on damaged cars. It would be easy to shape and modify one of
these units (you can bend them by hand easily) to fit on your car.
I plan to do just that on my GT6 (if I ever get it running) as I plan to put
a cat converter on it (Calif smogtroopers, you know).
Normally Hot-Headed, but hope to be Cool-Footed
Nick in Nor Cal
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