Motor oil runs through the veins of Emory Motorsports founder Rod Emory. Emory’s grandfather played an early part in forging Southern California hot-rod history, and his father founded Porsche Parts Obsolete, a company specializing in defunct factory components for Porsches. Growing up in his father’s shop and building a handful of cars before graduating from high school seemed to secure Emory’s place in the custom-automotive universe, despite a brief educational stint in the aerospace industry that might have…