Dynamat shouldn't be used near a high heat source for the reasons mentioned.
It is excellent for use inside the car to reduce heat, sound.
The other idea is based on the Mazda rotary's exhaust system, except the
shields are welded to the exhaust. Very effective. Someone in ignorance
replaced one with a standard system and burned it to the ground.
You could always Jet Hot coat the entire system. This can reduce underhood
temperatures as much as 70deg and reducing the possibility of detonation,
vapor lock, heat related parts failure, etc.. This has the added benefit of
increasing thermal efficiency / emissions.
GM
----- Original Message -----
> Someone else mentioned DYNAMAT that Eastwood sells. To do the under side
> of the B.s we need about 2500 in sq. There have been some off line
comments
> about it and a tar backing, fire problems and smell. Not to mention that
> we'd need about 5 sheets or $150 worth of this stuff.
>
> One fellow at work came up with a fairly cost effective idea, I haven't
tried
> it yet. But thought I'd throw it out for people that have cars on the
road
> to think about. That is to get some stove/flue pipe at the hardware
store,
> pretty cheap, metal, thin, and easily shaped (bent). It comes in various
> dia.s and lenghts. Cut the stove pipe in half lenght wise. Get some
> muffler clamps, and some scrap metal and fashion some "Z" brackets.
Attach
> one end of the bracket to the muffler clamp via one of it's nuts, and
attach
> the other end to the stove pipe via a small screw and nut or pop rivet.
> We now have a parabolic reflector with an air space above it. This should
> be a very effective heat reflector.
>
> John
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