Hey Folks, I'm in the process of replacing my engine mounts on Sea Hawk, equipped with the original Yanmar 3HM35F. I purchased mounts from PYI. They look to be quite high quality mounts and appear to be made of SS. Unlike OEMs, they are positively captured so your engine won't go flying lose if the rubber separates.
The previous mounts were not OEM either. In fact it appears that the PO may have over loaded them or installed used mounts because the forward pair appeared very compressed, almost a 1/2 in shorter and kind of inverted on themselves. At first glance I thought they were different designs from the aft pair. Because they were short it looks like the PO had to build up the forward foundations with some 5/8 or 1/2 inch starboard (polyethylene) blocks. Sitting between the engine mounts and the glassed in foundation of the boat there are 1/2 inch thick aluminum plates. They run the full length and width of each port and starboard foundation rail. Because of the clearly redesigned nature of the situation I began to question if these aluminum plates should be there or if they too were part of the PO's engineering. I'm looking for thoughts and advice regarding the engine mount replacement task as well as the appropriateness of the aluminum plates. It would also be helpful if anyone has torques specs or design details of the fiberglass foundation. Thanks, Josh Muckley S/V Sea Hawk 1989 C&C 37+ Yanmar 3HM35F Solomons, MD
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