Hey guys, not sure what forum topic this goes, I thought Engines was the most logical since it involves vacuum supply.  My question is - has anyone had their vacuum storage tank repaired?  Mine form my '72 is in good shape except for a couple of pin hole leaks I detected by connecting to an air hose while the tank was submerged in water.  I tried an epoxy filler (JB Weld) but that didnt work.  I also thought of gas tank sealer but the manufacturers tell me it will probably not dry since the tank openings are so small, and it will be hard to verify the sealer coats the entire interior.  Next option is MIG/TIG welding but the metal is so thin I dont feel I can do it without burning through!.  My last idea was to bring it to a radiator shop to see if they could fix it.  Any ideas appreciated, thanks!

The problem with repairing the tank is, since it IS so thin, it expands & contracts, so any type of JB Weld/epoxy isn't likely to hold for long. Same thing with welding/brazing...the metal will just contract around the weld, and create a crack there.I have no idea how you could permanently repair the tank, other than replacing it...

Not to be a wise guy, but what about that spray sealer they sell on TV?

Is replacing it out of the question? I replaced mine rather than fool around with it.

Is replacing it out of the question? I replaced mine rather than fool around with it.

Dave,

In the interim guess I'll try the Flex Seal that The Rook suggested, and yes I did see the commercial, but I wont be floating my car in any lake!

I used JB weld on mine 72 2 years ago and it is still holding. I plasted it first to make it clean then but the JB weld on and left to dry good and primed and painted it before putting it back in the vett. good luck

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Dave

That sounds like the ticket, Dave! You couldn't fix it cheaper then that!

Something like that might work in a pinch. The early cars('68-'72) had a fairly large, square-ish vac tank under the driver side fender. They needed the larger tank with the vac wiper door and headlights, plus, a lot of the engines in them days din't produce a lot of vacuum at idle anyway, so the larger reservoir was welcome. Starting with the '73 model, they used the front "crossmember" as a vac storage tank for several years....pretty neat idea.