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AFTERMARKET MANUFACTURERS BROKERS FORUMS
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Thread: How to block HM with keel?

  1. #11
    Junior Member
    Join Date
    Apr 2021
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    3

    How to block HM with keel

    Quote Originally Posted by stp012 View Post
    Remote oil filters are lagged to the side of the stringer. I was trying to break the filter loose and the whole bracket ripped right out with all 3 lag screws. I stuck a screwdriver in the hole and was able to push it all the way to the other side of the stringer. I checked the engine lags and a couple of them wouldn't tighten. Drilled a few exploratory holes to confirm my biggest fear.

    Thankfully the engine room stringers are separate from the rest of the boat so the damage ended there. The engine room stringers are made up of flat layers of 1/2" thick plywood, while the rest of the stringers are solid beams. My guess is the moisture crept right through the hull over the years. They built these boats with polyester resin which is not waterproof. My theory is the holes (engine mounts etc) in the stringers combined with the engine vibration allowed a 'path' for moisture to travel through them. Being plywood probably didn't help either.
    Did you us flat strips again or did you put marine ply vertically in stringers.

  2. #12
    Junior Member
    Join Date
    Apr 2021
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    3
    I have 1987 HM with stringer disease as well when you replaced the ply did you lay flat again or put it vertical

  3. #13
    Junior Member
    Join Date
    Apr 2021
    Posts
    3
    Forgot to ask if the bulkhead required repair?

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