Miata Mailing List: June 1996, Message #131
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   From: becalizard@earthlink.net (Rebecca Zook)
Subject: Re: modifying my '96 / exhaust manifold insulation wrap
   Date: Mon, 3 Jun 1996 20:38:41 -0400

>   Taking a hint from a recent magazine article, I obtained 20 feet
>@$1.10/ft of Thermo-Tec exhaust/manifold insulation wrap.  Pulled off the
>heat shield from the headers and using a wire wrap tool and some 18 gauge
>safety wire wrapped the headers up.
>               -=[Bob Allman]=-   MCA#58517  '96 Black B+

I'm really interested in the results of wrapping the exhaust manifold.
Anyone have any negatives to doing this?  Anything I can do to reduce the
heat under the hood would be great. After the Regional race in Corpus
Christi two weeks ago, I was amazed how much heat was trapped under the
hood.  Since I cannot legally funnel any air in, it would sure help if I
could control the heat build-up.  Should I expect the engine to run hotter
or cooler?  Will a colder heat range plug help, if the wrap does increase
engine operating temperature? From the last couple of races, it appears the
the 1.8 Miata is affected more by heat than the 1.6 Miatas and any of the
Neons.

'Mad' Merv