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

Do we think that this heavily modified Harbor Freight-sourced engine is stronger than the company's jackstands?

Purchasing a small engine can be incredibly pricey. If you were to buy a Honda GX200 engine, for example, you'd be looking at spending over $450. Luckily, there are cheaper options available that are ...

Right out of the gate, let's put the Hemi question about the Predator 212cc Ghost Kart Racing engine to rest. Despite all the rumors surrounding the engine and its domed cylinder head combustion ...