http://www.ecomotors.com/ I will leave this here. Along with this: Cylinder bore: 100 mm Dry weight: 296 lb. Dimensions LxWxH (inches): 22.8 x 41.3 x 18.5 Horsepower: 325 @ 3,500 rpm Torque: 664 lb.-ft @ 2,100 rpm Power density: 1.1 hp per lb. I'm pegging its internal displacement at around 2L. This is mind-boggling. It's like an F-250 super-duty engine got squished into a VW Jetta. With half the moving parts.