|July 3, 2011 - The hot foot problem has been solved.|
This heater valve should let the air passing through the heater core to remain cool. The unusual thing about it is that it works backwards to most valves, which matches the way the control cable from the MG works. Push to open, pull to close if I remember correctly. I haven't run the cable to it yet - I disconnected the cable from the knob under the dash when I wasn't using it earlier - but that's not liable to be a concern until later in the year.
With forecast temperatures above 101F today, I'm glad I have this one fixed.