It was not the sound of any engine made by human hands.
And without steel, you couldn't make engines for very long, either.
They talk about making engines that will go from the power of steam to work them one day.
For now he would have to be content with this "local boy makes good engines" story.
The Army said the cracking seemed to be limited to the 1,250 engines made in that 14-month period.
"The way they make engines today, we'll be in business forever," he said.
About 10,000 people walked out of a nearby plant that makes engines and other components.
It made engines for around 60 years, from 1852.
He made engines to sell, like any business person.
Forbidden to make engines of war, Japan made automobiles instead, and won the world.