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My interest in all things 'engine' has led me down the semi-diesel path.
Many 'Oil Engines' Hot bulb engines and Semi-diesels were low to very-low compression. Rumley Oil Pull tractors had a carburetor with a water jet to keep the engine from detonating under heavy load. The Bolanders marine semi-diesel also required water injection, once it got up to running temp, or it would lose power and damage it'self.
What I'm getting at here is that although the engine may run on JP-4, it is entirely different top expect it to provide enough power to fly. It might require continuous water injection and/or retarded timing. also, JP-4 is more viscous that gasoline and the flow rate could be reduced thru our electric fuel injectors, causing a lean condition outside of the combustable range, or the low vapor pressure and stratifying nature of the engine might just flood the spark plug holes?
I'd say any testing should be done on a dyno with a good running junkyard engine and an EC controller where you can change mixture and timing, and switch between gas and JP-4 with the A/B switch.
Never in your plane until you aquire some real data.
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