It took about an hour of work to make it run again, but the 14-liter engine now purrs like a big cat. We usually associate twelve-cylinder engines with high-end cars and the occasional SUV like the Audi Q7 V12 TDI, Rolls-Royce Cullinan, or the Bentley Bentayga. However, these powerhouses have a long history of serving a far more utilitarian purpose at a work site. Such is the case here of a Detroit Diesel Series 71, a two-stroke engine that was available in both inline and V configurations. The smallest of the lot was a single-cylinder, 1.2-liter unit while the largest...