Good morning Pe
Your prompt service is much appreciated. I will restore this intrigueing engine to full serviceability, and will run it. I will advise performance in due course.
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Interesting. It is now clear the engine is not a "one off" special. Another MVVS enthusiast has one. His diesel head button is just the same. Engine appears to be of the same vintage as mine. It wears a standard spec. R/C carb though.
The questions are: Who made these? How many were made?
The other example I refer to is shown in post No's 3472 & 3473 on this thread:
http://www.rcgroups.com/forums/showt...54975&page=232
I have Mr Svajda's email address. I do not know if he speaks english. Nevertheless, I have decided I will direct a polite enquiry to him concerning this "6.5 DFS". If I am favoured with a response, I will post his advice here. I would be delighted if it was his handiwork.