How are you guys welding on a stock tank that has had fuel in it?

I am thinking of filling it with water to displace the fuel vapors.

Any other suggestions?

Thanks,
Tobin

 

Just buy a new tank. It is a giant PITA to get it clean enough to weld on.

 

You can also let it sit open for a day and purge it with an inert gas such as argon while welding...

 

No worries.

#ad

 

Hook up a hose or tubing to the tail pipe of a running vehicle. Let it run for a while. This purges it like a charm.
Rick

 

I used Fast Orange spray then washed it out and let it sit for a day. I had no problems at all welding a sump on it.

 

I washed mine with some good degreaser, then used the tail pipe trick while welding. Worked perfectly.

 

Not really. I just squirted about a 1/4 bottle of Polmolive in mine and washed it out. Worked like a charm.

 

Rinsed out with 4 bottles of isopropyl alky, dumped in a little simple green, and some water and sloshed it around a bunch, rinsed well, then hooked up the electric leaf blower to the filler tube and vented through the sender hole for about a hlaf hour.

 

I just saw a few threads on it before and people mentioned they could never really get it clean enough. I never had the balls to actually try it myself. I always figured better safe than sorry.

 

Any Radiator shop can clean it for you.

Take the gas out, wash it out, and drop it off for the tank bath at a Radiator shop. I've done this to 2 of my tanks, one of which directly following I had a sump welded onto.

FYI - The Radiator shop actually has a hot bath for these types of things. Alittle water to rinse any residue out after the shop and your good to weld.

 

That's how I did my last tank!!!

 

i just welded mine a few weeks ago. all i did was let it sit with all the holes open for a few days then i rinsed it with water, filled it up sealed everything off and flipped it upside down. no explosions, not even a fizzle. but im not going to say this is the safest way. i TIGed mine and it turned out good no leaks.

 

Those who have done this, is the sump doing ok, or would you suggest a fuel cell?

 

I rinsed mine out with water quite a few times but I when I was grinding the square for the sump the tank exploded a little. There was a large vent on the bottom side so nothing really happened. Ended up working alright, Id probably have it purged next time

http://kak.com/camaro/fuel/DSCN1098.JPG

PS: Made the sump from scratch

 

I emptied mine out and rinsed it a few times...Let it sit for about a week, then rinsed it again.....Then welded on it for a couple days....LOL

No probs here...

 

i just let the hose run in it for like an hour and then put soap and water for another hour and emptied it and started welding.

 

go to a radiator and get it boild out then weld it thats what a local chassis guy in my area told me