[Jeff Higgins]

I had the opportunity many years ago to spend some quality time with a four cam down at my friend Gary Emory's shop. It was going into one of his son Rod's early restorations. What a marvelous little jewel.

One of our local R Gruppe chapter members has rebuilt several of these over the course of his long career in all makes of European car repair and restoration. I've quite thoroughly picked his brain about what all is involved. I can say, with all confidence, that it would be almost impossible to design a more complicated, less rebuild friendly motor. Unless one made a very contrived effort to do so. Granted, they did get simplified a bit in their last iterations, but the old built up Hirth crankshaft, built up camshafts, and other maybe unnecessary complication (like climbing gears at all cam drive locations), but they remain some of the most overly complicated motors ever made. And a thing of beauty.