I guess I should specify in case anyone else is thinking of doing this — use diesel or kerosene, not gasoline. Gas is super dangerous, and the whole idea is a terrible one if you don't know what you're doing.
Discussion
Take it from someone who survived an explosion in their backyards firepit and a 30ft fire tower that followed, DON’T USE GASOLINE lol…there is lighter fluid at every walmart or big box superstore
gasoline is the combustible that goes in the diesel engine, no? What am I missing?
Diesel engines get more torque at lower RPM, gas engines get more horsepower at higher RPM. They're similar chemically, but gas is more volatile.