I rigged up a much nicer temporary enclosure including LED lighting last weekend. That enabled me to get out there and do a little work this evening. It wasn't very cold, and only a slight drizzle.
I had to solve the mystery of the front engine mount because it has been driving me nuts. I've been able to find Mercruiser drawings, but no OMC drawings. Since they all seem to be fairly interchangeable, I'm going by the Mercruiser drawings for dimensional help.
the thing that has been really throwing me off is the fact that the bolts that are still in the engine mount seemed way too long. I always thought that the front and rear engine mounts on this engine should be level, but there was no way that this mount was set level. It would have had to have been a good bit higher in the front just to clear the bolts above the hull.
so tonight I temporarily reinstalled the gimbal mount and the inner mount through the transom. I needed to do this anyway, in order to determine how much clearance I needed for the exhaust tube. I remembered seeing that the original stringer and floor had been notched for that reason.
After a lot of measuring, remeasuring
and head-scratching, I remembered the 13 degree transom angle on the drawings and wondered if mine was actually 13 degrees. I downloaded a smart protractor app on my phone, zeroed it on the top of the Stringer, and then checked the transom to find that it was 17.4 degrees. Armed with this new knowledge, I set a straight edge on the rear mount, and angled it up 4.4 degrees to make up the difference and what do you know? The front engine mount with the long bolts suddenly made sense. I was finally able to make sense of it all and to write down dimensions that I could use to build a front mount from. Mystery solved!
Next thing to size up is the gas tank. I need to pressure test it, and then figure out what I need for bulkheads, and how to mount it. I worked my butt off to get enough clearance between stringers to allow for layers of fiberglass and some plastic strips. More on that later...