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Colyn,
It seems that the firewall blanket has to serve two purposes, one to keep the fire from penetrating the firewall, and two to keep the heat from softening the firewall. If I read the chart correctly, you would start softening the firewall at about 500F in the engine compartment, since the 3M material cuts the temp in about half.
Mike Easley
In a message dated 12/18/09 08:19:52 Mountain Standard Time, colyncase@earthlink.net writes:
Here's a document of the sort I was hoping to find for the intumescent paint.
It shows hot face vs. cold face temperature.
Based on the original, it seems to me that is the worry. e.g. the firewall gets soft somewhere above 250.
the home page is here:
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