Re: engine removal idea
I changed my Silvertons starboard engine last year. It has the same basic layout as the Trojan (straight-shaft inboards) but my engines are inside the salon, so a sliding glass door was involved as well.
We built a large A-frame to span over the engine. I used 2x4's for the legs and a 2x6 for the top beam. The plan was to dis-assemble as much of the engine as possible before pulling it- to save both weight and physical size.
We took off the intake and exhaust manifolds, both heads, starter, distributor, water pump, and anything else we could unhook. The engine mounts were then loosened and transmission disconnected. We assembled the A-frame in the salon as high as possible to give us the maximum lift (almost touching the ceiling), and attached a chainfall to the 2x6 directly above the lifting eye. After taking the weight off the mounts, I removed the bolts and we were able to lift it right out of the engine room. When we got it as high as possible, we replaced the floor and put a piece of plywood down over the carpet. We put a moving dolly under the engine and lowered it down, then removed the chainfall and securely tied the engine to the dolly. The engine barely made it thru the slider but we got it to the cockpit with no problem. Since the boat was floating, I enlisted some additional manpower, and 4 of us were able to lift it (with the dolly still underneath) on to the dock, where I easily rolled it to my truck. Again, 4 guys lifted it into the bed.
There 'ya go. That's how I did it.
Now, for this application, it seems that a second, larger, A-frame could be built, with the front legs in the cockpit and the rear about 6' past the transom on the ground. The top beam in this case should be a beefy piece of steel pipe or channel. Lift it up and over the transom, then slide the chainfall and engine over the rear and out. Lower it and you're done. Just make sure the A-frame is really rigid- cross bracing will be needed for sure.
Good luck.
