So guys, BIG thanks to u i got very good tips! And also i wanna tell something, so this is kinda experiment and i just wanna see can i create combustion even once. I dont have even flywheel and the cylinder would just burn so it wont work like real engine. I just wanna test can i build engine what has combustion cose im not engineer. When i get ignition working i will film it upwards so u can see if the combustion happens (i made the top of the cylinder with transparent plastic). I'm so excited to see if i can get even one bang!
WOW dude! Thanks a lot, i may order them today!