This is a homemade hit and miss engine. The flywheels are cast iron, the block was machined from scratch by my uncle who built and engineered the entire thing and also carved his name into it. The electronic ignition parts come from various motorcycles. The wheels were also built and soldered together by hand. The oil in gas premix is 6cc of two-stroke oil per 250cc of Coleman premium blend fuel. I apologize for any misleading, I have been corrected by my uncle who built this engine. The Flywheels are actually cast zinc, and the engine block and water jacket and basically everything red is cast bronze. The piston has two rings, but the compression psi has not been tested. The ratio has been measured to be about 3.5:1. It does not have oil, except the two stroke oil added to the gas, which lubricates the cylinder wall and the rod. The little metal bucket catches this runoff oil. All the other bearings have pinholes for occasional oiling. The item “Handmade Hit-and-miss Engine Cast Iron Vintage Homemade” is in sale since Sunday, June 14, 2015. This item is in the category “Business & Industrial\Light Equipment & Tools\Stationary Engines\Engines”. The seller is “ch3vr0l3t” and is located in Seminole, Texas. This item can’t be shipped, the buyer must pick up the item.