While you can find some small diesel engines on Amazon ... good fuel efficiency and low-end performance that are suited for industrial work, agricultural equipment, or motorized vehicles.

Sometime around 1990, a version of the classic Royal Enfield Bullet came with an small Italian industrial diesel engine good for only 6.5 horsepower. The resulting bike, which was called the ...

Yanmar makes these water-cooled, single-cylinder diesel engines that you can use for virtually anything, from agricultural to ...