leaking jon boat leaking jon boat
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    leaking jon boat
from RonU  
3/6/2010 9:37:00 AM


 I have a 15' Tracker Sportmans jon boat and it leaks around the additional piece of aluminum that come down the bow. Underneath that piece they have a layer of cork which is allowing the water to seep in. This year it seems like it is leaking more. What can I use to seal it without having an adverse efect on the aluminum?
This is a nice boat for when I'm fishing by myself and it is all set up for bass fishing and is a good river boat. Plus it saves me on gas over my 488. I went fishing for 3 days and I've used about 4 gallons of gas.
It sure would be appreciated if you could help me with this problem! Thanks RonU

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   how big is the gap? from Randy B  3/6/2010 12:03:18 PM
Based on what you said, I would try to fix it with some good quality silicon caulk. How big is the gap? Could you pick out the cork to make more room and then squish the caulk into there?

Clean and prepare well for good adhesion.

   Small Crack from RonU  3/6/2010 3:24:26 PM
Would say about 1/16th of an inch in places. I tried silicon caulk and it just peels off after awhile. Had thought about some under coating spray, but don't know how it reacts with aluminum.

   maybe alumaloy from Les #11903  3/6/2010 3:40:37 PM
Never used it to repair a boat, but works great on aluminum engine parts.

The relatively low, safe temperatures of the alumaloy rod allow it to flow freely at just 728 degrees F. Repairs are quickly achieved simply by heating the pieces to be repaired to that point and then joining them together, or directing the flowing alumaloy to the cracks or areas to be repaired.

   After another look from RonU  3/6/2010 8:44:47 PM
Removed all my tackle from under the front deck and noticed were two pieces are joined together in the center of the front. They are welded and it runs from the tip to about 6 inches short of the outside piece. So maybe I need to seal the inside and not the outside. Now what do I use to seal the inside?

   maybe both sides from Randy B  3/6/2010 9:22:15 PM
caulk will peel out of there unless you can get the bulk of it into the gap. there are also different qualities of silicon caulk - you might find some "architectural silicon caulk"

If it is welded, how could it leak? Now that you can see in there, could you put the boat in the water and find out exactly where and how it is leaking? That could be a big clue for you.

The metalloy idea is good too.

   Water test from RonU  3/6/2010 9:46:09 PM
I think that would be the right thing to do. If it doesn't have a pin hole along the weld I don't see anyplace it would be leaking. Ok I guess I'll find out when I put in the water! Thanks Randy

   instead of silicon from MikeF  3/7/2010 7:55:52 AM
Silicon does not stick to or stay stuck to wet material. Modifiers are added to it to make it work. What you need to do is go to West Marine (or a similar store) and buy a marine caulk made from polysulfide or polyurethane which will seal the seem and stay adhered. There is also a newer version (but I haven't used it) called polyether boat caulk. Any of these would be a better choice.

   polyurethane from Dwight #10907  3/7/2010 9:29:38 AM
Polyurethane will seal it. Caulk the outside because the pressure will cause it to leak again if you only caulk the inside. Home depot sells it.

   Rain-Rain-Rain from RonU  3/7/2010 5:37:33 PM
Probably take to the river tomarrow!

   Leak Repair from mofishin #10690  3/7/2010 9:58:09 PM
On a previous boat I had a crack in my livewell and I used a product called Leak Ender 2000. I bought it off the internet. I cleaned the livewell and dried it throughly with a hair dryer and sprayed 3 coats of this product, it looks like gray paint but it supposedly seeps into the cracks and expands to seal.
This fixed the livewell leaks and was still holding a year later when I sold the boat.

   JB Weld from davidw #14880  3/7/2010 11:18:31 PM
Its famous... It worked for everything I've ever used it on. Its been 29 years since my last aluminum flat bottom & man how I wished I'd known about it then!!!!

   shoe goop from PurpleWorm #10822  3/8/2010 4:15:42 AM
Ron Shoe goop from wal-mart works great for patching leaks
in aluminum boats and is easy to apply. I have used it for
appx 10 years and is still holding good. I use it inside
and out on my 12ft boat. It dries fast, covers well and
is plyable when dried. What ever you use needs to be plyable to bend with the aluminum or time will just break
it loose. Try shoe goop you will be surprised how well it
works. Good luck! Purpleworm.

   JB Weld x2 from elunde  3/8/2010 5:32:14 PM
Used JB weld to patch up a hole in my jon-boat couple years back and works like a charm. Used to patch a crack in my engine of a Kawasaki ZX7 for a year or two before I sold it.

Good stuff.

   Leaking somewhere else from RonU  3/8/2010 8:23:38 PM
Took it to Braidwood today and watched to weld in the front for water. Guess what no leaking on the weld,but was wet in the back. The only place it leaked in the garage was in the front. I'll dry it out and take it to river tomarrow, this time I'll watch the back end.

   ain't that a kick in the pants from Randy B  3/8/2010 10:15:40 PM
well, you're onto it's scheming now.

   another thought from Randy B  3/9/2010 7:32:48 PM
if it wouldn't damage anything, you can put water into the boat with a garden hose (at home).

Then, look around the outside of the hull to see where the water is coming out. It must work both ways.

(There's one exception to that rule. Once, I had a busted IO transom that would let water in when you reversed the boat, but not when the weight of the sterndrive was pressing the gap closed. Ha!)

   Can't find the leak from RonU  3/10/2010 8:53:30 AM
I filled it up with the hose in the garage and left it overnight. Nothing leaked out except a few drops in the front. The boat has 3 v's that get water in them and yesterday when I put in the water it leaked on the starboard one. Got a call from a fishing buddy and when I looked back the center one had quite a bit of water in it.

It has factory made decks and flooring and the water goes into the area where the flotation is. Than the water keeps leaking back into the outside v's. I'm in the process of trying to dry them out before I take it back to the water.
Pulled the plug and felt with my finger and there is a small flat spot toward then back of the tube, not big. On the outside the hole is flattened a little. Going to try a new plug I've already tightened this one. It's raining for the next few days so I'll let you know what I find out!

   "into each aluminum boat" from Beartrap  3/10/2010 6:30:57 PM
"some water will leak"
2010 A.D.

count yourself lucky that you didn't live through the period when all aluminum boats were riveted....go fishing and don't worry about it...if it gets deep enough,turn your bilge pump on....

   Found LEAK!! from RonU  3/12/2010 10:32:15 AM
It was leaking around the drain tube so I used a little JB Weld on the crack. Also replaced the plug and now it only has a small amount of water in it. Before it would get deep enough it would get into my tackle boxes under the front deck.
I sure would like to thank all of you guys for helping me out with this problem!!! Thanks RandyB, MikeF Beartarp and the rest of you guys!!! You guys are always there for people with a need for a helping hand!!
Thanks Again

   that's cool from Randy B  3/12/2010 5:25:05 PM
You're a persistent guy! Thanks for the final report. I wish more people would post their final result.



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