Originally Posted by chasbmw
you can see on the racer No 4 in my photos above that it has the overhead cam engine.
That was the RS54 race-bike. It was developed with that design.
The BMW 700 car engines were OHV engines like our beemers.
Apfelbeck converted them into bevel driven OHC engines.
If I remember right the final tuning stage had 850ccm and 95PS.
That was this engine here: