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Deflecting heat

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Old Jul 31, 2008 | 05:08 PM
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From: Thomastown Mississippi
Default Deflecting heat

Now that I've got my A/C working in my '77, I was wondering if there is any type of material available at Lowe's or Home Depot (or on the net) that you can install on the underside of the car to deflect heat coming off the engine, headers and transmission away from the cabin. If there is such a material, what would be the best way to attach it to the underside of the car?? Screws, nuts and bolts, maybe DAP contact cement?? Has anyone tried anything like this, or am I going in the wrong direction. Just trying to get the most out of my new A/C.
Thanks,
Kenny
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Old Jul 31, 2008 | 05:46 PM
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Originally Posted by BassCat
Now that I've got my A/C working in my '77, I was wondering if there is any type of material available at Lowe's or Home Depot (or on the net) that you can install on the underside of the car to deflect heat coming off the engine, headers and transmission away from the cabin. If there is such a material, what would be the best way to attach it to the underside of the car?? Screws, nuts and bolts, maybe DAP contact cement?? Has anyone tried anything like this, or am I going in the wrong direction. Just trying to get the most out of my new A/C.
Thanks,
Kenny
REPLY: www.jcwhitney.com carries 1/2" thick insulation matting with aluminum foil on one side . It comes 24 linear feet by 4 feet wide (I believe). Runs about $59.00 . You can put it under your carpetting back and front, alongside the console, and over the console. You can put it over the Trans. tunnel using hi temp. spray adhesive ., and apply it on the firewall in the engine bay keeping it away from the exhaust. I did all this to my 1970 big block with headers,and it greatly reduced heat gain into the cab. Also, you can add pipe insulation to the suction and liquid lines that run in the engine bay so engine heat doesnt get absorbed into the freon lines. Also, routinely power wash the condensor and radiator. Regards, dave.
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Old Aug 1, 2008 | 06:13 AM
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Thanks Dave, you said it greatly reduced the heat in the cabin. That's what I was wanting to hear. If I can line the underside of the car and reduce the hot air in the cab, I think it will be really comfortable now with the a/c working, even in this 95 degree weather.
KC
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Old Aug 1, 2008 | 07:16 AM
  #4  
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Really good articles....

http://home.comcast.net/~chadwick.ro...entilation.htm

https://www.corvetteforum.com/techti...=241&TopicID=3

http://forums.corvetteforum.com/show...1715489&page=2

Good parts...

http://www.1trail.com/sa/p/1_x_50_Ex...Wrap-Black.htm
http://www.coolandquiet.com/products_detail.cfm?PID=4
http://store.summitracing.com/partde...5&autoview=sku

I wrapped my exhaust
Installed foam "over the trans" seal between the body and the trans
Wrapped the lines outside the A/C unit
Placed a sheet of heat shield over A/C box blocking manifold
Sealed and caulked and the box joints.

Works great and really reduced heat.

Good luck
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Old Aug 1, 2008 | 09:28 AM
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From: Northern Florida
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Originally Posted by BassCat
Thanks Dave, you said it greatly reduced the heat in the cabin. That's what I was wanting to hear. If I can line the underside of the car and reduce the hot air in the cab, I think it will be really comfortable now with the a/c working, even in this 95 degree weather.
KC
REPLY: You welcome. Also, make sure your heater control valve is not leaking hot water into the heater core . What alot of vette guys do, is, install a small manual valve in the heater inlet line which they close off during summer operation to ensure not even a trickle is getting by. The other Poster gave you some good links, so, you should be all set. Regards.
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