TheSamba.com :: View topic - Black, tar-like goop all over the chassis

Sun Aug 06, 2006 3:02 pm

I have recently begun the restoration of my 1968 bug... what i first thought would be a modest resto has now turned into a complete overhall with now thousands of pieces strewn about the garage. \

In anycase I have begun stripping the chassis of paint, residue, glue etc and have notices that there is a black, tar-like substance that seems to be along all the joints and corners, etc. I assume this was originally put in to keep the moisture out of the car. My question is... what is it exactly? Where can i get it? and do i really even need to put it back in there if i am turning this into strictly a show/nice sunny day driver which for the rest of the year will be in the garage car?

Also what is that tar paper with the blue writing? Do I/should I put that back in once I start redoing the interior? Where do I buy it?

Thanks!

Sun Aug 06, 2006 6:07 pm

Caulking, replace it after the pan is painted or powder coated.

Mon Aug 07, 2006 4:24 am

The black stuff on the seams is seam caulk, you should use it. Eastwoods sells it. The black tar paper with blue writing sounds like a replacement for the tarboards. The floor would have it over the tunnel and in the pans but not under the rear seat. Deadens sound. Lots of places sell it (wolfsburg etc.). Some people prefer to use Dyna-Mat or the like. Without it your car will sound like a loud tin can.

Mon Aug 07, 2006 9:00 am

Almost any parts store will carry the seam sealer in a caulking tube. Way cheaper than ordering from Eastwood.

Mon Jun 16, 2008 11:50 pm

WHat's the easiest way to get the seam sealer out of the corners? I just attacked what I could with my angle grinder and wire wheel, but that's not all of it.

Skipping forward in time, after I get the pan Rhinolined, should I have to put more seam sealer in? Can I smooth the seam sealer with my finger tip like caulk so I don't have huge globs of it in the corners?

Tue Jun 17, 2008 8:46 pm

I would like to know a good way of removing that stuff too. I am currently cleaning up my pan to weld in new floors, and the caulk/tar is very difficult to get off.

Tue Jun 17, 2008 8:54 pm

Chisel and hammer or Wire cup wheel on an angle grinder didnt do the trick?

Tue Jun 17, 2008 8:59 pm

For me it sis, but I can't reach all of it with my angel grinder.

Tue Jun 17, 2008 10:23 pm

OvalWindowBucket wrote: Chisel and hammer or Wire cup wheel on an angle grinder didnt do the trick?

Well that worked on most of the tar....but there is also like a glue like material in some of the tight areas and along the edges. It is a little difficult to get to with a chisel/scraper. I tried a wire brush but it was taking way to much time.

Wed Jun 18, 2008 6:35 am

Go to your local baskin robins ice cream shop and buy some dry ice, crush it up and sprinkle it onto the stuff that is too soft to chip off. Get a stiff plastic scraper and in 5 minutes chip it off with a hammer. Worked great for my floor pans.

Wed Jun 18, 2008 6:57 am

mattollila wrote: Go to your local baskin robins ice cream shop and buy some dry ice, crush it up and sprinkle it onto the stuff that is too soft to chip off. Get a stiff plastic scraper and in 5 minutes chip it off with a hammer. Worked great for my floor pans.

I may have to give that a shot if I don't get any better progress tonight.

Wed Jun 18, 2008 11:25 am

On the hardened stuff, I used my scaler under a slight angle.
Be careful with it as it can do damage but on the plus side it also finds weak areas quite well.

Wed Jun 25, 2008 3:28 pm

I sandblasted it off, it worked great