I love weird engines—give me a rotary, a turbine, or, hell, even a flat-eight and I'll be happy. That's why I was so excited when I heard that INNengine of Granada, Spain had produced a opposed-piston engine that packed a pretty powerful punch in an extremely tiny package. There's no cylinder head in this motor. Also no crankshaft, no camshaft, and no valves. That's why it's no surprise that this