Matt,
Paul Hunt's observations mirror mine. Cooler temps in the UK probably
offset a bit of the additional heat from his V8, but cabin temps in GTs
can be oppressive. I have used padding and foil on floors, under seats
and on the tunnel, all of which seem to have helped with heat (certainly
have helped with sound). Even the plastic under-dash panels seem to have
helped a bit.
Regardless of insulation efforts, one must plug all holes in the
firewall and seal around all penetrations. Little air leaks admit a
surprisingly large amount of hot air.
Austin-Healey owners use a heat shield on firewall and in gearbox
area. I have not seen them installed on an MGB, but they say that heat
shields work well for them, and might be something to experiment with.
Bob
On Sun, 26 Jul 2009 10:34:08 -0700 (PDT) Matthew Milkevitch
<mmilkevitch@yahoo.com> writes:
> Fellow MGers;
> I wanted to inform those interested list members about the
> motivation behind my question on hood louvers. At present, my '74
MGB-GT has no
> cooling problems. However, one issue I've always had with my GT is
high
> cabin temperatures in the summer. I suspect this is due to excess
engine
> heat being "dumped" into the cabin (the cabin acting like a little like
a heat
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