I have a 1989 Super Maramu with perhaps the same model M80T Perkins.
I suggest you give Foley Engines up in Mass a call or email--they
have everything you'll need to get your Perkins and Hurth
transmission running smoothly. Phone is 508-753-2979 or email
email@example.com. Even if your Perkins wasn't taken care of
properly and needs an overhaul, that may be a better (and less
costly) way to proceed.
--- In firstname.lastname@example.org, "Udo J. Reich" <udo@...>
a Maxprop. I have several questions.engine?
and your max rpm under power?of the
pitch of the prop?