James,
No - no variables! I just want the highest temp reached, - how, when and
if, is of no concern - just the hottest. But you have solved my problem -
I think! Do some cars have fibre glass bonnets? If so then the bonnet
temp must be below 150 deg F ????? The real way to find out is to tape a
thermometer under the hood and see what it registers after a long run - and
after standing for a few minutes! Would anyone in a warm clime like to
perform this experiment?
At 08:36 AM 2/19/2005, you wrote:
Barrie,
There are too many variables out there to come up with an answer to
that one. Having said that, I'd suggest that you investigate a
reflective surface on the engine-side of the dampening material, or a
combo of insulating matereal atop a deadening compound. Dynamat and
others do this. Let me throw out someunrelated numbers that will be of
absolutely no use to you: Engine exhaust manifolds can easily reach
~1200 Deg F, if they are uncoated or unwrapped. Resin-based Fiberglass
panels will soften at ~150 Deg F. Some OEM paints blister or discolour
on the hoods of really hot engines. Assume a heat gun can do the same
thing at ~600 Deg F. Also, if the car is painted a dark color (or
colour) like BRG or black, the sun, itself, can heat the material to
nearly boiling (or higher). For this reason, many fiberglass panel/body
folks recommend against painting their products black.
JJJ
Barrie Robinson wrote:
Can anyone tell me with authority, the maximum temperature reached under
the hood - at the hood? I need to know to check out what adhesives will
stick sound deadening stuff under the bonnet (hood)
Regards
Barrie Robinson
Regards
Barrie
Barrie Robinson
(705) 721-9060
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