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Old 05-17-2020, 05:23 PM   #6
thinkxingu
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Quote:
Originally Posted by ishoot308 View Post
I would use aluminum screws only. Stainless is an alloy of carbon steel and will eventually react with aluminum especially in a wet environment. If you really must use stainless for its strength, I would use a nylon washer under a stainless washer of the same size, preferably a fender Type washer. This will keep the dissimilar metals from touching. Drill pilot hole through the aluminum slightly over sized to avoid the stainless from touching it as well.

As far as a gasket, I would simply apply a high grade silicone sealant, bolt it together and clean up the excess.

Good luck!

Dan
Dan,
Do I need to do the whole back of the transom with sealant, just the screws, or a ring on the outside to seal the "inside"?

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