A Predator 670 engine costs $950 on its own, and the builder didn't stop there as he added Holley Sniper EFI, a turbo, billet ...

This 670cc V-twin is ready to rev and make some boost, complete with billet internals, an upgraded cam, and more.

Harbor Freight's lineup of Predator engines has long been used to power all manner of powersports vehicles. Due to their relative inexpenseness and ease of operation, the backyard mechanic world of ...

There's no shortage of insanity-induced projects on the web. From twin Hayabusa-engined crosskarts, Zero-powered trikes, ATV robot dogs, and Harley snowbikes, the denizens of the internet are nothing ...

Go-karts have always held a special place in the hearts of gearheads and tinkerers. These unique vehicles appeal to techies and DIYers for various reasons. For some, go-karts remind them of happier ...