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Old 08-27-2012, 11:40 PM
84starsandstripes 84starsandstripes is offline
TT Regular
Join Date: Jul 2012
Boat: 1984 MasterCraft 351
Location: Midwest
Posts: 46
Originally Posted by petermegan View Post
Just a thought but I had a rat (dirty dirty rat) that ate a hole in my speedo tube. Could not find the leak as it only leaked at speed. It may be something like this and when you throttle off the level of the boat changes and allows the water to run down the floor toward the front. Just an idea?? Do your speedo/s still work?
Thanks for the response! Speedo's don't work but I have new speedo tubes that I need to install so this is very possible!

Originally Posted by Cloaked View Post
Peter in OZ has a valid point.

If you're all about finding the leak, pull the rear seat, the rear fuel cell cover panel, remove the engine cover, and pull the rear center floor section. Take it out on the water and get a friend to look for a leak. First place I'd look is the drive shaft packing gland, and have new graphite packing handy...

Next place I'd look is the exhaust hose to transom connection, then I'd look for a hole in the muffler(s).

Next place I'd consider is the platform brackets that are mounted with lag bolts into the transom. Water pushing the platform when slowing can open up a loose lag bolt....

The neighbor also has a valid point but that is usually at slower speeds...


I have a strong feeling that it's the rear platform brackets. The entire platform seems pretty loose, especially when weight is put on it.

Originally Posted by sargentino View Post
I have seen this happen on mine.... I re culked the edge around the boat and ski platform mounts speeds ect.
Now the only time i get a bunch of water in the back is when I do back
Rubrail and everything will most likely be redone this winter so if I don't find it by then we'll see!

Originally Posted by mgorczak1 View Post
Probably coming thru the deck and hull joint. At just the right speed - attitude of boat and spray is right against rub rail... IMO
Definitely possible, water does get pretty high when coming off!
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