Hi Dave and all the other fine folks at YS. I see that the YS Performance website is gone and now you have the yspartsandservice site up. There doesn't seem to be any links to operating advice. I think that information about prop recomendations, needle settings etc. was very useful and should be made avaliable to all YS users. Please hook us up with the helpful info. If it is already out there somewhere in the cyber world, please hit me with the link. Thanks from a 20 year loyal YS user going all the way back to the YS.61 long stroke rear exhaust pattern engine, and lots of 1.20s, 91 ACs and my latest 1.10FZ. Pete

Hello Pete,
You may find the URL below of some value.
Ken
http://www.probuild-uk.co.uk/factsheets/ys_engines.php

thanks for the come back. all useful stuff. VT