I purchased a 1990 35.5 Hunter in Sept of 2012 and I am in the process of fixing her up at this time. I have a question that no one seems to be able to answer. The engine exhaust exits below the waterline through a hole in the hull with no metal fitting of any kind. You can see the plywood laminations.
So I asked a fellow at Torrenson Marine:Muskegon Michigan if this was normal and he told me he had never seen an exhaust exit below the waterline and that it may cause some back pressure issues. So while I am doing some fiberglass repairs to the bottom, I am planning on filling the old exit and moving the exhaust up and inserting a stainless fitting. Will I be changing the math used to calculate the exhaust pressure? Does anyone know why they put it there in the first place?
So I asked a fellow at Torrenson Marine:Muskegon Michigan if this was normal and he told me he had never seen an exhaust exit below the waterline and that it may cause some back pressure issues. So while I am doing some fiberglass repairs to the bottom, I am planning on filling the old exit and moving the exhaust up and inserting a stainless fitting. Will I be changing the math used to calculate the exhaust pressure? Does anyone know why they put it there in the first place?
