No Jack I have 6 Volts so I have a Malory dual distributor that triggers a Thyristor ignition box made by a Porsche ignition engineer for me. It is similar to those MSD or Jacobs devices but for 6 volt.
The Malory manual says there are different colored springs with different tensions aviable to change the curve, but I have no clue wich combination to use.
The heating problem ocures only hat high speed, it should get enough cold air even without a fan at this speed.
The fan is not the original, it came with the engine and it looks like a more "advanced design" (smooth curved blades) and pushes a lot of air.
Yeah Autobahn is fun almost no speed limits, but lot`s of guys drive like hell in the Mercedes and Porsches.
Frank