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Re: Under bonnet temp

To: "James J." <m1garand@speakeasy.net>
Subject: Re: Under bonnet temp
From: Barrie Robinson <barrie@look.ca>
Date: Sat, 19 Feb 2005 13:09:07 -0800
Cc: mgb-v8@autox.team.net, mgs@autox.team.net
In-reply-to: <42176B07.90801@speakeasy.net>
References: <6.0.3.0.0.20050216124045.02a57280@mail.look.ca> <42176B07.90801@speakeasy.net>
Reply-to: Barrie Robinson <barrie@look.ca>
Sender: owner-mgb-v8@autox.team.net
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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