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Started By
Message
Aluminum Boat, welded up but still leaking
Posted on 5/8/23 at 2:17 pm
Posted on 5/8/23 at 2:17 pm
I recently got some cracks in the hull of my center console boat welded. I took it out yesterday. It still leaked but considerably less. Is this just going to be a part of life on a older aluminun boat? Am I kidding myself to get underneath it with marine JB weld to maybe hit smaller cracks?
8
Posted on 5/8/23 at 2:25 pm to Nannyslayer
Did you put water in the boat beforehand and mark all the leaks? I had a spot that I could see water coming in when I was using the boat. I sealed it up and when I put it back on the water there was another spot. put water in it and there were 2 or 3 minor leaks I didn't realize were there.
The JB weld works if it's on a spot that doesn't have any flex to it. I've had it and 5200 marine sealant on 2 or 3 spots for 4 years now and it's held up.
The JB weld works if it's on a spot that doesn't have any flex to it. I've had it and 5200 marine sealant on 2 or 3 spots for 4 years now and it's held up.
Posted on 5/8/23 at 2:26 pm to Nannyslayer
quote:
Nannyslayer
I just came to appreciate and acknowledge this.
Posted on 5/8/23 at 2:29 pm to Nannyslayer
Check for smaller cracks underneath boat but near your plug.
Its simple really. Find cracks, place marine(5000 at least) paste on it ...let dry...it helps...or just weld them.
Its simple really. Find cracks, place marine(5000 at least) paste on it ...let dry...it helps...or just weld them.
This post was edited on 5/8/23 at 2:30 pm
Posted on 5/8/23 at 2:30 pm to Loup
the welding shop I took it to did the water test. I basically have one big crack going lengthwise that has been welded previously.
I'm okay with the bilge running from time to time but want to be confident in fix before I run in the river for extended ride.
I'm okay with the bilge running from time to time but want to be confident in fix before I run in the river for extended ride.
Posted on 5/8/23 at 3:08 pm to Nannyslayer
I had to have my boat X-rayed...the leak was at the chine extrusion. If it’s leaking bad it might be worth it to have it done
Posted on 5/8/23 at 3:41 pm to Nannyslayer
quote:
going to be a part of life on a older aluminun boat
Pretty much so especially if it's an older riveted boat
Posted on 5/8/23 at 3:47 pm to Barneyrb
An old fishing buddy of mine had an 70s/80s model Lowe Big Jon. That boat would leak in, but the water wouldn’t leak out while on the trailer. We had some damn good times in that old boat.
Posted on 5/8/23 at 4:33 pm to Nannyslayer
Alumacraft?
Posted on 5/8/23 at 4:43 pm to Nannyslayer
quote:
the welding shop I took it to did the water test.
do it yourself, the guys doing it likely stopped with the big leaks and didnt recheck it after. plus they arent keen on crawling under there in the mud to do the best job inspecting it like you would do.
fill boat so you have at least 6-8" water over the floor and then get under there with a permanent marker to mark any wet spots
This post was edited on 5/8/23 at 4:44 pm
Posted on 5/8/23 at 6:25 pm to Nannyslayer
quote:
marine JB weld
Today I learned there's a "marine" version. I'm guessing it is 50% more expensive but the only difference is the word "marine" on the label.
Posted on 5/8/23 at 7:31 pm to Nannyslayer
Longitudinal cracks down the hull usually indicate that the framing members have broken from the hull so it’s flexing a lot and fatiguing. Those little production boats usually have no longitudinal stiffeners or keel other than the small angles broke in the hull, which aren’t very stiff.
If that’s the case, welding from one side will never fix it, nor will epoxy. The floor needs to be removed, foam excavated, and inspect for the damage area.
If that’s the case, welding from one side will never fix it, nor will epoxy. The floor needs to be removed, foam excavated, and inspect for the damage area.
Posted on 5/8/23 at 7:33 pm to mohalk
It probably weakens next to the weld, from the heat.
Posted on 5/8/23 at 7:45 pm to EF Hutton
More likely a combination of poor design, monkeys with spool guns, and an abundance of foam and camp paint to hide it.
Posted on 5/9/23 at 8:13 am to Nannyslayer
I had the same problem you’re having from the heat of the weld it’s opening up small cracks by the weld. Time for a new one trust me I sunk some money in that boat. Do yourself a favor scrap it are sell it cheap buy a new one ol buddy
Posted on 5/9/23 at 10:46 am to LSU_Smash_the_West
how did you know it was alumacraft? :(
Posted on 5/9/23 at 10:54 am to Eli Goldfinger
quote:
An old fishing buddy of mine had an 70s/80s model Lowe Big Jon. That boat would leak in, but the water wouldn’t leak out while on the trailer. We had some damn good times in that old boat.
I have a 1980 model Lowe 1860 riveted boat. It has been used hard for 42 years and is as dry today as it was when new...I had a 40HP jet yammy on it at one time and ran it up gravel banks at 25MPH and it it ain't pretty but it is still water tight.
Posted on 5/9/23 at 11:26 am to LSU_Smash_the_West
Hey hey baw!! Hope all is still well with ya. Haven't seen your name in awhile and was wondering about you.
Posted on 5/9/23 at 11:45 am to Hook Em Horns
Spray the inside with Rhino or Line-X, etc.
Posted on 5/9/23 at 2:04 pm to Nannyslayer
quote:I’d read several yrs ago their bigger boats (18/60, 20/72) had issues.
how did you know it was alumacraft? :(
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