Xoie; As long as I’m wasting time on the computer instead of working on my shop, I will ask a question that has been on my mind. How did you come by the dimensions for your gasifier— nozzle tip diameter, number of nozzles and orifice size, restriction diameter, and height of nozzles above the restriction. ?? Did you use the standard Imbert dimension?? I have thought that you would have to adjust for the “thin” air a 7,000 feet. Others on here are much better able to comment on this than I. I just bring it up to get you thinking about it. In the engine at 7,000 feet, with each intake, the piston will pull in less air, than if it was 14.7 lb atmospheric pressure behind it. Then the velocity going through the nozzle will be less so will not penetrate the char bed as deep. And then at the restriction, the restriction will not accelerate the gas as much. This creates less CO2 to CO reaction. Just food for thought.
PS Xoie; you don’t have to start a new subject with each question as long as it pertains to your gasifier. TomC