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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