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Hi-Ya all,
The calking Ford used on body seams in 1962. Naturally, I have to replace some of that in the areas I'm replacing the sheet metal and such...

Where can I find the right stuff? OR, is the home calking, or RTV, or Silicone, the stuff to use today?.

Also, does the calking go on the bare metal, or should it go over the primer?.

Any heads up on this would be appreciated.

Thanks
You don't want to use home chalking or RTV. You want to use a automotive seam sealer from a auto paint and supply. For inexpensive you could go with 3M Fast n Firm which uses a normal chalking gun. or step up to 3M UltraPro urethane which is more money and you need special applicator, But is better sealer. There are also 2k products like Automix but even more money and more expensive applicator.

You want to primer first then seam seal.

I use Fast n Firm alot and it is pretty good.
If you have access to the special applicator the UltraPro is really good but pricey.

Never tried the 2K.

On my own car I used panel bonding adhesive for all seams but it is pretty pricey, needs special applicator/gun and is put down on bare metal.

Fast n Firm is not bad if you don't want to spend alot.

There are other brands that people have used that seem to work well also. My supplier sells 3M

You want to make sure you completely seal the whole seam. wear neoprene gloves, press/rub the sealer into seam with finger, and feather the edge. any gap(s) at all and you can have seam failure

Lou
 

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Could I use Bondo?. Mostly where I need to use some stuff is where I replaced or cleaned up the metal. There is sooo much area on the car that will be replaced or cleaned up. The "stuff" alone will cost me several hundred dollars of the 3M stuff.

Nothin' else like around 10 bucks a tube?.
You can get 3M Ultrapro for around $17 a tube.

I agree with Hottarod you really need to use seam sealer to do it right.

3M 08300 Ultrapro Autobody Sealant

Lou
 
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