http://kartfab.com/go-kart-maintenance/go-kart-engine-overview-cheapest-best
The Biggest Boys
These engines are too big for any go kart, are meant for industrial grade work, and push beyond the limits of any transmission meant for a go kart. That’s why we like them, right? These come standard with key-start, and have plenty of amps to run off-road lights. These are perfect for a mini buggy type off road vehicle, or performance golf cart.
Honda V-Twin The GX630 and GX690 range from 20 to 22 hp. Older versions include 610, 620, and 670. I currently own a gx620, which I will be installing on a mini buggy.
Briggs Vanguard V-Twin The 16 hp vanguard is the smallest v-twin, and is really the only v-twin that is safe to use with the 40 series torque converter (which is rated to 18 hp) and the Comet FNR gearbox (which is rated to 16 hp). The briggs vanguard v-twins range all the way up to 35 hp!
22 HP (670cc) V-Twin Horizontal Shaft Gas Engine EPA The newest addition to the V-Twin pool, which is a 22 hp, 670CC engine. True to its history, the predator v-twin 670cc 22 hp engine is cheaper than the industrial honda and briggs v-twin engines, and looks just about as reliable.
Thanks KartFab!
Welcome! Poboy may be referring to me.
When the housing market crashed on Pluto, I moved to Uranus.