Welding a used gas tank
 

Hey guys, I am looking to upgrade my fuel system and considering an in-tank pump. My tank is all but new but has had gas in it. Id like to weld the fuel return and the sump into this tank but have reservations about welding to a tank that has had fuel in it. Any recommendations on how to purge this and weld it safely?


Regards,

Rob

It's like trying to take a s**t with your pants on. Can be done might be messy.cleaning it out and letting it air dry for a week obviously remove any and all parts that you can. Then be brave lol... Honestly take it to a shop and let them do it..if they will

Sounds like I may be better off just buying a new tank. I like your analogy though!

yep, they are so cheap now. Welding galv steel sucks.

Most radiator shops will clean them out and sometimes weld in what ever you desire. It's been done and isn't a big deal. Call a few and ask if they'll do it and pricing.

Galvanized is toxic when welded so just take proper precautions. Proper respirator etc.

fill the 1\5 way with water and dawn dish soap blow air in tank to mix repeat if still smells like gas poor it out and cut and weld
i did my tank and worked great

If you have a plain stock tank, then just replace it. If you got a high doller tank like ricks then modifying may be something to consider. I purge my tanks with argon, but even then the pucker factor is high.

Lots of great info here. Thanks for all the input. It's just a stocker so getting another one is only a $200 affair. On the same note, whats the best place to put a sump? Lowest point sounds right?

they are cheaper than that. You can buy a tanks inc tank already ready to go very reasonable.

Ill look in to that. Thanks