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Mopar(Chrysler) Flathead engines are still alive in Russia. Here is an example of a transfer to electronic fuel injection control in artisanal garage conditions. Video: https://youtu.be/lpkbbPi8Rsk

One of the main reasons restraining the development of mass sports aviation in the USSR in the mid-1930s was the lack of low-power aircraft engines. As a solution to the problem, it was proposed to use automobile engines, which, being 5-6 times cheaper than aircraft, also consumed significantly less fuel. In addition, it seemed very tempting to use conventional automobile gasoline instead of high-octane and expensive aviation. However, a significant obstacle to the installation of car engines on aircraft was their too large weight. The aircraft was G-23(Г-23) developed by the designer Gribovsky Vladislav Konstantinovich(Грибовский Владислав Константинович).

For simplicity, drills have been made on the crankshaft. According to them, the electronic control unit determines the marks 60-2 using an induction sensor.

Good afternoon. This applies to your subject and may become interesting to you as a story. The USSR bought in the late 1930s a license for the production of engines a flat head with a volume of 218 cubic inches. Here is a video showing the engine GAZ-11 (GAZ-11), released in June 1942 during World War II. It is well preserved, due to the fact that it lay deep in the swamp, where there was no oxygen access for its oxidation. https://youtu.be/i0_qq_5PZE8 It was also well restored. In the United States, the engine was put mainly on cars, but the leadership of the Soviet plant initially saw it as a good engine for low-capacity trucks, since it had good torque at low engine speeds. Therefore, during the war, it was installed on light tanks and even aircraft. In the USSR, the engine underwent modernization during mass production at the plant. The main difference from the American engine was that the chain drive of the gas distribution mechanism was replaced with one textolite gear. The plant considered that this would make this unit more reliable in operation and lead to a simpler production process. After the Second World War, the engine began to be installed on a gas-51 truck. There was also a change in the location of the holes for spark plugs, a change in the order of the windows of the inlet and outlet openings of the manifolds. In the 1960s, the truck GAZ-51 underwent modernization and became the truck GAZ-52. Basically, the changes affected the installation of a more comfortable cabin and also a small modernization of the engine. Also at this time, the engine was GAZ-51 put on front loaders. The engine was manufactured and mass-installed on trucks until the mid-1990s. This video presents a quick-start conversion of the engine to an injection power system from a Russian car with upgraded firmware for six-cylinder engines. https://youtu.be/lpkbbPi8Rsk If interesting, I can give some questions in more detail.