Re: plug old motor holes?
I don?t think the bolt holes are larger than 1/2 but this will be the third motor on this boat. The original motor was replaced before it was in my possession and the original bolt holes look to have clear silicone or sealant in them. The 90hp force that was installed previously has now come apart so now I plan on installing an older mercury tower of power. With all these motor changes however the transom is going to look a little like swiss cheese. The original motor had four bolt holes, the 90 hp force has four bolt holes, and the tower of power will require six bolt holes with the power tilt trim. So should I be filling the unused eight bolt holes in with fiberglass or something of that nature?