worth a new tank?

So the question becomes: Is it worth spending the cash to replace the tank or should I just call it a boat anchor and start over?

Its a Sanborn Model 104, cast iron 2 cylinder single stage pump with a 22 gallon portable type tank on wheels. the tag on the tank says 10.4 cfm but my guess is that I'll get closer to 6 at 100 psi

It will be used mostly to shoot nails, blow up tires and some "light" wrenching.

Thanks in advance for the help, and I appologize for the long post.

Dave

Now, it's a very bad idea to pressurize a tank that you don't know the history of. I water test any compressor tank I get. A grease gun, some fittings, and a section of pipe to catch the grease is a great way of doing it.

Also, it's a very, very bad idea to weld a rusted air tank. Pinholes develop when the wall thinkness is thin enough to break through in some areas. The entire bottom half of the tank is probably more oxide than metal.

And finally, water heater tanks are not good for air. I can't remember any of the testing specs, but I think most aren't certified to be used at more then 90 psi. They can explode and they do explode, There have been some discussions here about that topic. I'd also like to see any water heater tanks that are tested to 1000 psi. Just picture something half the weight of a SCUBA bottle that size.

good luck