There are some different types of the MSM (Meirson Sprint Motor) like the MSM with Jap head, the (2) MSM pushrod types with a MSM head, and the types with a T/OHC (twin overhead camshaft)
But some experts in the field told me that the latest engine Clarrie Meiers made a DOHC with a 4 Valve head.
The camdrive layout shaft was unusual with a toothed-belt driven by the crankshaft running up and around the two high mounted camshafts supported either end by high speed
ball bearings.
The big question is, was this engine ever completed and is there more information from this engine to find.