- intake and exhaust valve guides
- new valves, exhaust valves sodium filled
- new higher lift performance camshaft (286 deg, 11 mm lift)
- prologation of the intake port system
Theilacker has a long tradition as a maschine shop for large gasoline (Deutz) engines. In the early days they had a mobile replacement parts service for MWM engines. MWM is Motorenwerke Mannheim. They supplied for example farm tractor maufacturer like Fendt or Eicher.