My Dad has a 1991 17.5' Glassport fish & ski with a 1993 115 Mercury OB. The boat is rarely in the water and is stored in a garage. Over the course of 2-3 hours the boat will take on 4-5 gallons of water in the bilge. The water is coming from the bottom left motor mount bolt as evidenced by putting the boat on the trailer, leaving the bilge water in it and parking on an extreme grade. The water is visible coming from the exterior left lower motor mount bolt. I have not seen the leak from the interior of the boat since the gas tank is in the way.
I have removed the bolt and felt around the interior of the transom and it seems to be in good shape as it is not rotted or crumbling. I put some below the waterline sealant on the bolt when it was replaced. The boat continues to leak but at about half the rate as before. Any ideas as to what material to use to eliminate the leak? I was thinking about some type of expanding foam.
Thanks in advance for any advice.
I have removed the bolt and felt around the interior of the transom and it seems to be in good shape as it is not rotted or crumbling. I put some below the waterline sealant on the bolt when it was replaced. The boat continues to leak but at about half the rate as before. Any ideas as to what material to use to eliminate the leak? I was thinking about some type of expanding foam.
Thanks in advance for any advice.
