Can anyone send pics and or installation instructions for the cockpit heat valve located on the engine side of the firewall?

I and Lancair have tried to find the install manual but the only ones available are for the pressurized ES' and IVs which use a turbo setup. The one we have is taking the heat from the exhaust muffler into tube facing the engine compartment and venting through the downward tube of the T shape valve.  The problem that I see is if the valve is cracked open because it did not fully close is that heat is still coming into the cabin.

If I reroute the heat from the bottom the valve would have to be opened quite a bit to allow heat in.

Also, has anyone thought about bringing in outside air through the engine compartment to behind the instrument panel to help cool the avionics?



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