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jst



Member Since: 14 Jan 2008
Location: Taunton
Posts: 7731

2011 Defender 110 Puma 2.4 USW Stornoway Grey
leaking ali fuel tank
Anyone have any suggestions on how to fix a leak in a diesel ali fuel tank?

where the baffle is welded in has resulted in a small leak on the spot weld after 3 years of use.

i am wondering whether to weld a patch on, tyr and plug the hole or to try an epoxy or grp solution.

its quite thin material, hence hesitant to weld! Cheers

James
110 XS Utility
130 Puma Station wagon/camper (in the making)
90 Puma Hardtop
Post #316576 17th Mar 2014 10:35am
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Ragerover



Member Since: 27 Dec 2013
Location: In a land far far away
Posts: 145

United Kingdom 
Weld it every thing else will be a bodge

Get it tig welded good tig Welders can weld coke can thin
Post #316578 17th Mar 2014 10:47am
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K9F



Member Since: 12 Nov 2009
Location: Bournemouth
Posts: 9610

United Kingdom 2008 Defender 90 Puma 2.4 XS CSW Stornoway Grey
It is difficult to imagine what it actually looks like. For minimum outlay and convenience and if you have easy access to the leak a compound may be the best and most convenient solution, ideally applied from both sides. If it's a flat surface leak you could try and patch it with aluminium speed tape and a compound perhaps?
If not successful you could then reappraise and look at a welding solution, but the first needn't cost much in toil or money. If you go through life with your head in the sand....all people will see is an ar5e!!

Treat every day as if it is your last....one day you will be right!!
Post #316581 17th Mar 2014 11:01am
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jst



Member Since: 14 Jan 2008
Location: Taunton
Posts: 7731

2011 Defender 110 Puma 2.4 USW Stornoway Grey
cheers guys.

its on a flat surface and tank is out of the vehicle. Cheers

James
110 XS Utility
130 Puma Station wagon/camper (in the making)
90 Puma Hardtop
Post #316616 17th Mar 2014 2:58pm
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smb



Member Since: 15 Jan 2013
Location: Cheshire
Posts: 1232

United Kingdom 2011 Defender 110 Puma 2.4 XS CSW Santorini Black
James,

If it is the size of a pinhole then use a sealant. Hairline cracks are slightly different as they may open up through stress/weight/twisting, etc...

Ive used this stuff on both Aluminium and Steel Trials & Motorcross Bike tanks that get heavy knocks and vibrations and have had no problems. In fact, Ive used it on the fuel tank of a D6 Caterpillar with no problems. Obviously, it won't be as good as a good weld, but it comes close.

You can get it from M & P Accessories and it's called PETSEAL ULTRA TANK SEALANT

http://www.mandp.co.uk/productinfo/501102/...us/Petseal
Post #316641 17th Mar 2014 5:59pm
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tookaphotoof



Member Since: 18 Mar 2013
Location: dordrecht
Posts: 1279

Netherlands 2013 Defender 130 Puma 2.2 HCPU Santorini Black
Not sure if anyone else have experience with this, but I'm considering it myself to fix a couple of small holes on the Caterham.

http://www.alumiweld.com
Post #316643 17th Mar 2014 6:05pm
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smb



Member Since: 15 Jan 2013
Location: Cheshire
Posts: 1232

United Kingdom 2011 Defender 110 Puma 2.4 XS CSW Santorini Black
Yes, it is very handy to have in your toolbox for emergency repairs. Obviously, it won't be the finish as by a professional, but for non-aesthetic work it is good. Just do lots of practising first on old bits of alli' as it is very important you get the temperature right. I wouldn't use it on repairs that could be put under stress tho'.
Post #316646 17th Mar 2014 6:15pm
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jst



Member Since: 14 Jan 2008
Location: Taunton
Posts: 7731

2011 Defender 110 Puma 2.4 USW Stornoway Grey
excellent, thank you for the pointers guys, will do some digging. Cheers

James
110 XS Utility
130 Puma Station wagon/camper (in the making)
90 Puma Hardtop
Post #316770 17th Mar 2014 9:51pm
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