I have a Yanmar 3GM in excellent running condition. However, it seems a little large for my E27. I'm looking for advice from anyone who has done this install. Or help locating a more suitable motor. Thanks!
That might be a bit large or heavy, agreed.
Biggest problem might be room to install it.
OTOH, a good friend of mine once replaced a deceased A4 with a one cylinder Yanmar. He really liked the thrift and reliability, but not so much that offshore seas could sometimes temporarily bring his E-27 to a halt.
I recall that it was rated about 8 or 9 hp.
A two cylinder diesel would seem to be ideal.
Dar friend, In fact a 3GM will fit into the space provided by your E27. It's tight but perfectly revocable, etc. I have a friend her in Marina del Rey with that same engine in his E27. Do it and let us all know how happy your are with the added power. A 10-12 hp engine seems ion the bargain of being too under powered while the 3GM at 27 hp is more than adequate and then some if caught in heavy seas. I have that near same engine in our E31 and find it a perfect fit and power match. Glyn Judson, E31 hull #55 Marina del REy CA