Hello everyone.
I'm new to these forums and was directed here from some BMW forums for your excellent welding/fab section!

My gas tank is leaking around the mid-seam (clamshell type construction), and I was wondering what options are out there for repair.

What is the suggested method for welding tanks? Just have it purging with argon for a while with hopes that all of the oxygen and gasoline vapor will be dispersed?

Let me know if anyone has any first hand experience with this. I don't want the tank blowing up in my face!

-Ryan

 

weve welded on gas tanks many of times, all we do is wash it with soap and water, we have never had any problems, knock on wood.

 

You can go Joe Dirt on it after pouring the gas out (shoot roman candles into it)
That will ensure all vapors are out

-James

 

when the gas tank is out and empty, just put an exhaust hose in it from another running car and the carbon monoxide from the running car will dry the tank from fumes.

 

Thanks for the suggestions.
It looks like this won't be as big a deal as I originally thought.

-Ryan

 

Wash it with water more times than you think is necessary.

 

Why take a chance and repair it yourself? If the tank is not purged correctly it will be the last thing you ever do. Besides it can be replaced or repaired cheaply and profesionally without the risk.

 

you ever welded on somethin after u cleaned it with alchohol?

BOOM!

 

i like the roman candle thing! hehehe!