Seal a new Metal tank?

If you discover it does leak get it chromed .....on the inside.

DogT said:

I would be very leery of putting pressure on it. I think submersing it would be plenty of pressure if you can find a tank big enough (horse trough). My 2 cents. First I'd put some primer on it.

Dave
69S

Click to expand...

So you are saying plug up the petcock and filler holes, submerge and look for bubbles?

dirtymartini said:

So you are saying plug up the petcock and filler holes, submerge and look for bubbles?

Click to expand...

That's what I'd do. Maybe use some warm water with a cold tank and that will heat up the air giving it a small amount of pressure.

I'm not far from a Radiator shop. Took it over there. If it can't stand up to 8-10 PSI without leaking. I'm sure as HELL
not putting an expensive paint job on it then filling it with Gas.

I agree. If a seam or weld bursts with 2-3 psi it isn't a very good joint. Is it? Better to have it fail before you paint it. Also, a defective tank can be repaired by welding with no risk, whatsoever, if it's never had gasoline in it. The tank is going to be subject to a lot of vibration and poor joints can fail and probably will.

I can't be the only only one who has used this stuff. At least read up on it. Simple and effective. Steel and fiberglass. 1 pint will do 3 tanks +. I have done a fiberglass and my current steel tank.
http://www.hirschauto.com/prodinfo.asp? ... ation=PINT

Etch with industrial drain cleaner. This will remove any and all surface rust.
Prep with acetone.
Take your time and use common sense.
Just under a 1/2 can left. Whew, that smells good. We're talking brain damage stinky here. This shit is bad to the bone. Hope I can finish this post.

I use a supplied air respirator whenever I use VOCs. I wish I had done the same in my youth. Maybe these 67 year old lungs would be in better shape if I had.