so I've made several engines, such as my small example engine and a large THDR compressed engine but i seem to have the same problem with each engine. Its that I can't seem to propel the exhaust from the combustion chamber before the next "batch" of fuel is thrown in or i over heat important metal components causing engine failure with disastrous results including explosions and irreversible damage resulting in a complete retry of the engine design. I'm trying to make a fast small engine whilst also being efficient and i can't seem to do that at the speeds I'm currently moving the exhaust.
So, I'm trying to find out of there are any better ways without ridiculous amounts of fans ruining the results of the engines natural strength.


My question is: Does anyone have any tips on engine building?

Here is my example engine.
https://powdertoy.co.uk/Browse/View.html?ID=22528