plastic welding gas tank? - JeepForum.com

 
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post #1 of 12 Old 09-15-2011, 01:45 PM Thread Starter
beachedjeepyj
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plastic welding gas tank?

Well I am having trouble with a crack in my 20 gallon plastic tank. JB weld only holds for a few months before it flakes off.

I was wondering if this, http://www.harborfreight.com/plastic...ron-67102.html , might work to "weld" the plastic together?

Otherwise my only option is to get a new tank, which is about 300$...


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post #2 of 12 Old 09-15-2011, 01:57 PM
Berniebikes
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Maybe, but suggest you get someone that knows plastics and the appropriate stuff to use. From my experience in another sport I know there are a number of guys that do repairs on kayaks and canoes of various plastics. There is a difference between cross linked polyethelene and ABS, HDPE and PVC, and different materials and methods are used for each. The first step might be to find out what specific plastic is used for our tanks. here is a good link with a lot of resources for plastic repair.

http://www.mv.com/users/morris/paddl...at-repair.html
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post #3 of 12 Old 09-15-2011, 01:59 PM
Hghgrad
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I've personally never had any luck with the plastic welder on anything. I'd try to find somebody parting out or going to a fuel cell. We tend to have a ton of people ripping them apart in this area because of unrepairable rust...so gas tanks are plentiful.

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post #4 of 12 Old 09-15-2011, 08:27 PM
Old4X
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Don't waste your time and money, no repair will hold. Quadratec has tanks for $169, that is your best bet.

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post #5 of 12 Old 09-15-2011, 08:41 PM
jay-h
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Many plastics don't weld well. Others (PVC) can only be welded with RF heating (sort of like microwave). I believe that the tank is polyethylene which is chemically stable but very difficult to repair.
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post #6 of 12 Old 09-15-2011, 09:15 PM Thread Starter
beachedjeepyj
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Thanks all, it looks like Ill be looking for a used gas tank for sale. I would go for the cheaper 15 gallon tanks but those have the circular fuel sending unit and my 20 gallon has a square one.

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Do I let others drive my rig? No -- Why, because if this ship sinks i'll be the captain and I go down with this ship.



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post #7 of 12 Old 09-16-2011, 01:51 PM
jmmorgan82
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Hit this guy up: http://sanantonio.craigslist.org/pts/2597341412.html. He is just south of Austin, but he may have one for you.
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post #8 of 12 Old 09-16-2011, 03:22 PM
Jims-87YJ
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What about JB weld? That should work pretty well?

1987 YJ, 258, Weber 32/36, HEI, Custom Sound bar, Hardtop/Sun-rider/bikini tops, 2" Lift, 1/2" Boomerangs, 1" Body & MM Lift. 32x11.5x15 Copper STT's on Black Rock 950 Lobos w/4" backspacing, Still need Front Bumper and Seats.

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post #9 of 12 Old 09-16-2011, 08:20 PM
Ronnie-Evans
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I had this same issue with my poly tank. First step was a fuel tank patch kit from napa. No luck. Next step was jb weld.. Twice and still no luck. Last step was using a carbon fiber bondo. That lasted a few months but then failed again. My crack was where the bottom portion was bonded to the top right smack dab in the middle so eventually I gave up and bought a new one. 300 bucks from 4wp.

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post #10 of 12 Old 09-16-2011, 09:45 PM
Mark05059
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Quote:
Originally Posted by Jims-87YJ View Post
What about JB weld? That should work pretty well?
did you even read the original post completely? He said jb weld only lasts a month or so.

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post #11 of 12 Old 09-16-2011, 09:48 PM
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I'll sell you the one I have for $30 plus whatever shipping costs.

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post #12 of 12 Old 09-18-2011, 02:19 PM
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Quote:
Originally Posted by Hghgrad View Post
I've personally never had any luck with the plastic welder on anything. I'd try to find somebody parting out or going to a fuel cell. We tend to have a ton of people ripping them apart in this area because of unrepairable rust...so gas tanks are plentiful.
10-4 on the never had any luck with the plastic welder. I tried all kinds of things to fix a tank many years ago...new tank solved it.

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