Rear window seal failure, Getting too hot from the Subie motor? Options

[theer]

Question for the intelligentsia:

My rear window seal failed on my Subie-swapped car, and I've noticed the firewall gets really warm. There's no backpad (yet), but there is a layer of sound deadening on the inside. No engine compartment pad, either. I can feel the heat radiating off the firewall. I haven't taken the temp, but I'd guess it's 120-130 degrees. Perfect for those 90+ degree summer days. The fresh air fan is not installed (yet) either, and my ice-powered swamp cooler contraption just can't compete.

Driving home yesterday, I noticed the window glass was actually warm to the touch and thought perhaps the heat is causing the butyl seal to soften and the weight of the glass pulls itself off.

I recently put the stock air flaps underneath in the hope that they would draw more cooling air through. No discernable difference.

Anyone else getting that kind of heat from their engine compartment? Would the engine compartment pad help? How do others get the heat to flow out?

Thanks,
Tom

[Costa05]

I took these temps about a month ago on my recent 2.5 Subaru build just to see what was going on with my car. Note: radiator is in the front of the car. One of those smaller VW Sirocco radiator units. Engine sits back away from the firewall about 10" or more so there is a big space there, and I have not installed my engine lid yet so it is wide open to let the hot air to rise out. Coolant temps at the gauge is about 190ish. Temps as noted measured with a cheap HF infrared thermometer. The key could be in the engine lid removed or going with a GT style with full open venting. Hope this helps.

Air temp100d sundown

Engine intake iron manifold runner mid point 152d

Engine top of alum cylinder head L 170

Engine top of alum cylinder head R 175

Alum intake tube steel support bracket 135d

Alum intake tube at 75d bend 122d

Alum intake tube at mid point 121d

Alum intake tube at air cleaner 116d

Fuel tank top center 106d

Firewall front trunk radiator side at Moroso125d

Alum expansion tank center 126d

Firewall front cabin side metal 104d

Console tunnel top - 3" behind shifter 101d

Cabin floorplan cabin side on butyl insulation.

Cabin perlon carpet passenger side feet area 100d

Firewall back engine bay side midway 114d

Firewall back cabin side carpet 103d

Rear trunk decking mid point

Radiator hose front 145d