STEM 2 Stroke Gas Engine Combustion Engine Oil Hit & Miss Gas Engine DIY Engine. Item Name: 2 Stroke Gas Engine. Size Of Engine: 221215cm(LWH). Fuel: ZIPO oil, alcohol (concentration above 75%), kerosene for lighter (NO GASOLINE). This engine can burn alcohol. The alcohol concentration is not high, and the lowest 58 degree liquor can be used, and no lubrication is needed. Transparent combustion chamber, the internal situation can be seen clearly, the working process of the two-stroke internal combustion engine can be clearly observed, and it is convenient to learn the working principle of the internal combustion engine. The outside of the combustion chamber is provided with a transparent water-cooling sleeve. The inside is water. The water 360 degrees completely encloses the combustion chamber to cool the combustion chamber. It does not need a water pump and automatically circulates. When the water temperature reaches 90 degrees or more, it is naturally convected. Distillation tank, the water flows into the tank sandwich to heat the fuel in the middle, the fuel is heated more easily, and finally sucks into the engine. The ignition angle is adjustable. When the engine reaches a certain stable speed, the ignition angle adjuster is adjusted to pre-ignite. Adjustable from 0 to 30 degrees, find the best ignition angle to achieve the highest engine efficiency. Adjustable speed CDI, our original adjustable speed igniter can electronically regulate the engine. This machine is similar to the Stirling engine. There are also power cylinders and matching cylinders. Except for transparent parts, all are all metal, and the combustion chamber is quartz. The water-cooled sleeve is bullet-proof glass, the piston is a steel chrome-plated piston, the cylinder liner is brass, and the outer casing is aluminum alloy. 1 X Hit & Miss Gas Engine.