cool thanks, I researched today and found some more things on this, and i also found a site that will machine parts for you as long as you have a cad drawing but its not too cheep for setup otherwise they said its about a dollar per part around 150 estimated for setup. I also found many different ways to make an engine like this and this is where i need help again. can a 12 cylinder engine use glow plugs and gas? If it had the setup of an rc engine? I have a basic understanding of engines but am a little confused about 12 cylinder engines. If i wanted it to sort of have that race car sound like the one in the link would it have to be 4 stroke? also i run nitro engines and was wondering if glow plugs can be used for gas, but im thinking they can as long as they are for gas engines? sorry if my questions are wierd but its just hard to ask what i need to ask, thank you.