Karts are short, lightweight car frames designed to be powered by small three to five horsepower engines. They are machines that can be built or upgraded with practically no investment. One of those updates is a new engine. Engines designed specifically for go-karts can be purchased, however mower engines are perfect for switching to go-kart racks. They are small, easy to come by, and significantly faster than today’s go-kart engines. This article explains how to mount a lawnmower motor to a go-kart in a few easy steps.