Serge Wrote: Hi, Mike. My (very biased) advice is: if you can locate a Type 4, forget the Types 1, 2 and 3. The Type 4 is an extensive redesign, solved most of the reliability problems of the preious ones, the case was built in a better alloy. Only problem is to find one, because much less Type 4 were produced.
Just to add to this, I have been led to believe that the heads on the 1700 are of better quality than the 2000 as the 2000 heads had a reputation for dropping valves. They can be identified by the shape of their exhaust ports. One has a round port and the other has a semi rectangular port. I think the round ones belong on the 2000 but I am not certain. Regards Dene Collett KR2SRT builder South africa Whisper assembler See: www.whisperaircraft.com mailto: av...@telkomsa.net
