Agreed. As soon as you get any heat on that seam whatever tape or goo that the factory sealed it with will start oozing out and contaminate whatever you're trying to do. Maybe something like
might make for a smooth transition without heat.
"Kiss my ass, I bought a boat; I'm going out to sea." - Lyle Lovett
I went and picked up the aluminum for the transom insert that I will be doing. Below is the game plan for now. Please share your opinions and concerns.
1. I will be inserting a 1/8" thick 5052 aluminum plate on the inside of my transom to retain the original look on the outside but have a much stronger transom for the Mark75 I will be running.
2. I am rebuilding the knee braces and setting new rivets for them
3. I will drill out the bottom rivets in the are where there are currently L-profile tabs so I can install step-n-trim tabs. The rivets that I drill out there will also be drilled through the new transom support and riveted.
If I do this, what I don’t know if where else I need to add rivets to sandwich the old and new transoms together. Alternatively I can make it easy for myself and just rivet it to the outside.
Here are some shot of the outside and my proposed inside job:
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