Originally Posted by Hatterasguy

MB did make marine engines, you run across them in old Euro boats every so often. They are a rare bird in this country though.

As far as marinesing a 616 I think that would be throwing good money after bad. I have never seen an automotive engine successfully marinised.

Most sailboat auxiliaries are good for several thousand hours, so buy accordingly. You can probably re power yourself for $5k-$10k when the time comes. For example Mack Boring sells rebuilt Yanmars at very good prices.

Don't forget that space is very limited and the 616 is much larger than most of the engines it would be replacing.