[DeTomaso] cabin heat-A/C

[MikeLDrew at aol.com]

In a message dated 12/4/09 21 58 27, matt at nwpantera.com writes:


> 1. Reduce heat in cabin.
> -It seemed a lot of heat came from the firewall and the rear window.
> 
> Since there is no heat source near the window while under power it must be 
> conductive from the firewall?
> Asking recomendations for best heat/sound solutions on firewall/window. 
> I'd like to keep the stock single pane window.
> Since I had no A/C it was easy to find multiple heat sources and at speed 
> there was no denying a hot window inches from your head.
> I've got maximum insulation already but it's designed for sound and not 
> heat and is not doing the job.
> The cooling tube heat and no fresh air are another issue but contribute as 
> well and will be tended to.
> 
> 

>>>On more than one occasion, I have been uncomfortably cold while driving 
my Pantera, which has no A/C installed.   That tells you that my efforts to 
insulate the cabin from external heat sources have been successful!

I can't say what worked since I didn't perform my modifications in an 
iterative fashion.   While the car was apart, I did a bunch of stuff, and when it 
came back together, It Was Good.

I have a reflective stainless steel firewall cover; in between the 
stainless and the factory steel firewall is a layer of insulation, perhaps 3/8 inch 
thick?

The inside of the firewall is covered with Dynamat; that doesn't do a whole 
lot for insulation probably.   But atop the dynamat is another layer of 3/8 
insulation.   I've also got 3/8 insulation lining the entire center of the 
monocoque, from the front to the back of the cabin.

All these things combined mean that I get next to no heat transfer at all.  
 You can feel just a little bit of heat, at the bottom of the removable 
center section of my upholstered back panel, where it joins the back of the 
center console.   But when you hold your hand against the flat portion of the 
interior panel, it's barely warm.

There is some heat from the glass, but it's not too bad.

Mike