Crack in bottom of Transom help

Angler1

Cadet
Joined
Mar 17, 2012
Messages
27
Re: Crack in bottom of Transom help

Hello Gentlemen,

Warm enough today to lift the cover and poke around in the bilge. Well, there is a stringer right on top of the crack area (that my batteries sit on) that right angles down into the bilge. The stringer wall is about 6" port/left of my through hull live well intake. Everything is in great shape and dry in all the areas I can see. I can not see behind this crack area at all however. It is completely enclosed by the stringer/box.

There is a hole drilled into the stringer from the inside towards the port. This hole is about the same height off the bilge floor as the live well through hull and about 2" in from the inside of the transom wall. (Attaching pictures for reference). The starboard side is exactly the same with the same hole and location.

I get a mirror and stick a screw driver in this hole...it is about 7" deep into the stringer and completely surrounded by foam. I stick my finger in the hole and the foam is pretty damp. I stick my finger in the starboard hole and it is damp also, but not quite as much. I guess these holes are for filling foam from the factory. And they are low enough that I would think bilge water might get above them in the case of pulling out that boat after a good rain.

So, I do the tap test real good on the crack area and other parts of the transom, and the crack area does sound back more of a snap, where the rest is a thud. The sound is almost like the gel is delaminated, but there is absolutely no other sign of that and the crack does not flex whatever I do.

Regardless, I am fearing the any water trapped in the stringer would be accumulating back at my crack area...since I do keep her pretty bow up in winter storage.

So...with this new information...smear some marine tex in the crack and forget about it? See what she looks like next year? Or should this now be grinded out to inspect the glass and re-gelled now. And what about water getting in your stringers? I would think they should drain also. Thankshole1.jpgtransom.jpg
 

Angler1

Cadet
Joined
Mar 17, 2012
Messages
27
Re: Crack in bottom of Transom help

Hmm, ok. Never used that stuff. But looked it up just now and got good reviews.

So just seal it and forget it? With the foam damp, stored bow up in sub zero weather, probably did get some freeze inside which might have caused this. Is it normal for inside stringers/foam to see some water?
 

Pez Vela

Chief Petty Officer
Joined
Dec 4, 2004
Messages
504
Re: Crack in bottom of Transom help

After 10 years? Yes, I'd say boats do get wet and tend to stay that way. Do what you can to keep things dry and call it a day. My advice is to practice your repair method, whichever you choose, in an inconspicuous place. Practice makes perfect.
 

ondarvr

Supreme Mariner
Joined
Apr 6, 2005
Messages
11,527
Re: Crack in bottom of Transom help

The wet foam is normal, and probably has little to do with the crack, that is unless the transom is rotten, then the crack is the least of your worries.
 

Angler1

Cadet
Joined
Mar 17, 2012
Messages
27
Re: Crack in bottom of Transom help

Thank you very much gentlemen for your comments on this. I'm going to do the "gel coat scratch patch" or squeegee/push some marine tex in the crack, clean it up and forget about it this year. We'll see what it looks like through the season and next year. I guess if there is a problem there, it shouldn't be much bigger, and probably require the same work anyhow. Thanks again
 

Angler1

Cadet
Joined
Mar 17, 2012
Messages
27
Re: Crack in bottom of Transom help

Well gentlemen...I drilled a hole in both side of my transom to mount my underwater LED lights. The port light is right over the gel coat crack area. And I did get a small amount of water coming out of this hole when I drilled through the outer transom. The starboard side was dry.

I dried the hole with a heat gun a little, ran the underwater light through it, goobed it up with 4200, and mounted my light.

So now..I obviously have water getting into the transom, and water freezing is probably what caused my outer gel coat crack (which showed up over the winter). Looked up a lot of posts about water in the transom and not sure what to do now. Sounds like once it's wet, it's rotting, and impossible to dry.

In despair, mounted my lights and plan to just go boating soon. But any recommendations? What about drilling holes on the inside of the transom, at the bottom floor, so that any water sandwiched in the transom core, leaks into the bilge? Water did not poor out of this hole like some other guys mentioned. It just was wet, and a brown tear eventually ran out the outside. But my hole on the outside is 5 inches off the bottom, at the top of my gel coat hair line crack area.

What am I in for?
 

81_chapparel194

Petty Officer 1st Class
Joined
Aug 7, 2012
Messages
341
Re: Crack in bottom of Transom help

get ready for a transom repair soon..or on craigslist as a TLC needed boat..
 

JASinIL2006

Vice Admiral
Joined
Feb 10, 2012
Messages
5,716
Re: Crack in bottom of Transom help

I'd be wondering how the water got in... The longer it goes uncorrected, the more saturated wood and foam you will have.
 

Angler1

Cadet
Joined
Mar 17, 2012
Messages
27
Re: Crack in bottom of Transom help

Yes, I'm wondering how it is getting in also. There is a live well through hull beside the area, but is looks good and no sign of leakage on the inside. I did move the engine up last year, but was extremely careful not to move the lower bolts (which are in slots on the tilt/trim mount). I removed the upper and resealed them, and they sit above the water line anyhow. Other than that, my boat is really clean and everything is solid. My only guess is that it is the lower engine bolts.

What about porting some drain holes on the inner transom wall at the bottom, so any water drains in the bilge? The transom is about 2+ inches thick. An outer wall, a void, and then the inner wall. I felt the void when I drilled through for my underwater LED lights, and that's when the moisture came out.
 

Woodonglass

Supreme Mariner
Joined
Dec 29, 2009
Messages
25,929
Re: Crack in bottom of Transom help

Eventually the transom will need to be replaced. Once the wood has been waterlogged, when it dries it will eventually rot. Drilling holes on the inside won't be much help
 
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