O/I 28 Eng. mounting bolt failure - SailNet Community

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Old 11-20-2006
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O/I 28 Eng. mounting bolt failure

When I recently tightened my engine mounting bolt, it snapped off revealing quite a bit of rust. Is there a repair for this without pulling the engine? I cannot get a drill anywhere near it to drill it out. The bolt that gave out is directly under the flywheel and starter. Anyone have any ideas?
Thanks,
GCC.
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Old 12-03-2006
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If you can support the engine somehow, it might be possible to cut into the bedrails with a sawsall to get the broken bolt out. Then you can rebuild the bedrail with fiberglass & epoxy. I think you'd still end up needing to drill down a new hole for the replacement mount, though, so maybe that won't work.

If the bolt is rusted, you actually have two problems: 1) where is the water coming from? Have you already fixed the source of the leak which allowed the water to attack the engine?, and 2) now that the water has rusted the engine bolt, it's also possible that it has penetrated the core material of your engine bed rails. It may be that they need to be rebuilt. Not to open a can of worms, but I would do some inspection and probing if I were you, before I started just trying to fix the one problem of the broken bolt in isolation.
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Old 12-03-2006
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Mike,
(..I'd pay a pro to do this...). See if you can get a hydraulic auto jack under the engine, then remove all bolts and the drive shaft, and raise the engine and see if that gives you enough access. If not, try locating the jack on a plank that would allow you to pull the engine out.
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