What about limiting the cooling system as a way of locking down the horsepower? I mean, if you are only allowed X amount of surface area for heat exchangers, wouldn't that alone limit how much HP that you can pull out of an engine?
Also, this would be great with opening the door for HERS devices. If you use the heat to generate power BEFORE sending it to the excnanger, you could run hotter.
I am interested in some thoughts on this, as it came to me while re-reading "Engineer To Win". You don't have to limit fuel, or arbitrarily limit development, just limit cooling capacity, and let the engineers invest into recovery tech just to use up the energy before it needs to be expelled...
Comments? Thoughts?