X-Mozilla-Keys:                                                                                 
charles.harbert@fmglobal.com wrote:

Marv, I have an option for you that I'm using over my fiberglas cowl to protect
it from turbo heat. I coated it with Ocean fireproof paint (Aircraft Spruce).
This is an intumescent paint that bubbles up when exposed to heat ( about 350
F). It acts as an insulator and sound deadening material. After flying the
plane, I noticed a small area where the exhaust pipe went through the cowl where
the paint was beginning to bubble. I covered it with the thin sticky backed 2"
aluminum tape, and it's worked great. It seems to reflect the heat and was very
easy to install.

As a fire protection engineer, I wanted to cover all fiberglas/epoxy cowlings
because the burn quite intensely. The turbo can glow red hot  and could ignite
the untreated cowl. I used Ocean on all exposed fiberglas. I also used thin SS
(.030") heat sheilding around the turbo leaving 1-2" for cooling air flow. You
need to get this very hot air out of the engine compartment or you will
overheat/melt parts. You might be able to use aluminum for sheilding if your far
enough away to keep it from melting.

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