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Repairing fuel tanks

Posted: Sat Feb 20, 2010 8:51 am
by PJ.zook
Well my fingers are all walked out and I cant find a LWB Vit fuel tank for love nor money. So im pretty much left with repairing the large dints and the gash at teh back of it.
Can anyone recommend anyone to repair them for me in melbourne?

Posted: Sat Feb 20, 2010 3:36 pm
by toaddog
Try a muffler place that has the set up for steaming the tank

Posted: Sat Feb 20, 2010 5:18 pm
by -Scott-
Drain the petrol, then drop in a match.

That should fix some of the dents. :armsup:

Posted: Sat Feb 20, 2010 6:19 pm
by ajsr
brown davis in bayswater

Posted: Sat Feb 20, 2010 7:26 pm
by PJ.zook
Yeh thought of the whole match thing, hmmmm it works with tyres...

Will give Brown Davis a ring on monday.

Posted: Sat Feb 20, 2010 8:01 pm
by toaddog
PJ.zook wrote:Yeh thought of the whole match thing, hmmmm it works with tyres...

Will give Brown Davis a ring on monday.
Ah yes the match thing.

I have seen two killed doing that. One bloke had a hole in his head about the size of an apple. Actually no he was welding.

Posted: Sat Feb 20, 2010 11:44 pm
by PJ.zook
Nah dont worry, i got it all sorted.

Step 1: Put on safety goggles and facemask, earmuffs, gloves and a welding apron.
Step 2: Place tank in the open, not indoors, and away from anything else flammable.
Step 3: Stand behind a solid object incase tank rips apart, preferrably a concrete block.
Step 4: Take out box of matches and select one match from box.
Step 5: Get stupid apprentice to walk over to tank and light match.

Posted: Sun Feb 21, 2010 7:33 am
by matt76
Why post shit like that? What if someone actually think you lot are serious and does it?

Posted: Sun Feb 21, 2010 7:59 am
by hulsty
How bad is it? When I did some tank repairs I filled the tank with as much water as possible and then pumped exhaust gases into the tank before welding worked fine, only pin holes though.

Posted: Sun Feb 21, 2010 4:22 pm
by oldmate
-Scott- wrote:Drain the petrol, then drop in a match.

That should fix some of the dents. :armsup:
stupid advice

take out the sender/pickup unit first. You don't want to damage it, and the large hole will provide oxygen for the fuel to burn.

:P

Posted: Sun Feb 21, 2010 5:02 pm
by PJ.zook
I spoke to a couple of companies at the Wandin 4x4 show. Without seeing the tank they are quoting around $150-200 plus to repair tank.

Posted: Sun Feb 21, 2010 5:07 pm
by ajsr
you can weld the tank even with traces of fuel still in it, HOWEVER you must remove all the oxygen from the tank.

I made half tanks (for lpg) for brown davis for a few months over a decade ago.

we used tape up the openings and flood the tank in carbon dioxide and then cut in half and weld a cap on the halved tank with co2 still flowing lightly into the tank.

you can also use argon to do this as well.

its probably not something you want to do at home however and you could well die if you do it wrong be warned.

Posted: Sun Feb 21, 2010 5:50 pm
by sloshy
I've repaired 2 tanks before, just drained them and filled them up with water, then repaired them, drained the water out, swished a bit of metho around in there, let it dry out and re-install.