The old time glow and ignition engines were really something and I'll bet would improve their performance with modern manufacturing methods and tighter tolerances. That said I remember and old friend Ron Ford who recounted the story of a couple of hobbyists who attempted to run a glow engine with liquid Oxygen. He said to say the engine screamed is an understatement, its a wonder the prop didn't shatter. The head glowed a bright orange and not long after take off the engine exploded like a fragmentation grenade just a few feet off the ground. Needless to say that ended the experiment!