Gascap light

It may sound stupid, but I recently used a can of spray sealant on a project, and I think it might be a great solution here.


I think it would adhere to the area fine w/o a ton of cleanup and prep. A brush and a rag would probably be all that's needed... this stuff sticks to anything.
It will take a few coats, but I think it would work really well.

I'd agree. I don't think you're going to be able to buy just the neck. And if you can, you'll have to epoxy it in place. So it makes sense to repair it. Be generous with the epoxy.

The gorilla glue is a maybe, I had "brush on" flex seal in the back of my mind. The system is pressured at about 1psi as far as I can tell. Silicone may do the trick too. The crack around the repair probably developed from all the frame flexing I have been doing to it. Which ever adhesive I use, it needs to be "gasoline rated" like RTV or??

Should I peel, chip, scrape off the old repair (epoxy?) to start fresh or is that just a can of worms?

WSS said:

The gorilla glue is a maybe, I had "brush on" flex seal in the back of my mind. The system is pressured at about 1psi as far as I can tell. Silicone may do the trick too. The crack around the repair probably developed from all the frame flexing I have been doing to it. Which ever adhesive I use, it needs to be "gasoline rated" like RTV or??

Should I peel, chip, scrape off the old repair (epoxy?) to start fresh or is that just a can of worms?

Click to expand...

That's what I would be worried about as well, but it's hard to imagine what might be underneath the previous 'fix'...

Maybe it's better to "start fresh" with a good look at what is actually cracked/broken/etc. and then decide on the best 'final fix'.
Also, the PO may not have used the right material, or enough of it, etc.
At least taking it back to zero first will provide you with the full story.

I will start slowly with removing the old repair, but I will go as far as I feel safe.

A little back story on my JK, it is a 2007, in 2009 (w/27k) it had a frame off rebuild by the owner of Discount tire. It was professionally done by a shop in Phoenix, I do not remember the name but it was done well. It was a feature vehicle for SEMA I believe. GenRight and TeraFlex are the main parts on it. Fast forward to the last owner, all the repairs are not as professional. Lots of repairs by different mechanics, etc.. This "patch" is probably one of them.

There are a lot of advantages to buying a built rig, even more to buying one professionally done. The down side is they are expensive to fix too. LOL I just put a new Ron Davis radiator in it.

Ok, fingers crossed. I decided to leave (most of) the original repair done with epoxy. I used a dap rtv silicone that is fuel resistant.



First step was some exploratory scraping. The job must have been done while tank was out/pulled. The epoxy looked like it was done well. I wiped it with acetone and then sanded it some and followed up with coarse scotchbright.



Then I applied the rtv silicone. Went on smooth and felt like it adhered good. I’ll let it cure till Monday and give it a go.