260Z Hatch rust and floorpan

[thetremendoustim]

Hi all I have a few questions.

 

Today I took to grinding the hatch area to get rid of the rust and paint and did so, mostly successfully (see pics).

 

 

Then I took up the carpet and found a bunch of panels that have the consistency of tar and they are "glued" or more plainly "stuck" to the panels, so I took a chisel and after like 2 hours got some of it off and ground to the bare metal. What is this stuff?!?!? (see pics)

 

 

Finally, I bought some 26 gauge sheet metal and this guy I know said he'll sell me his mig welder. It's an Easy Mig 100 and here are the specs

*90 amp flux wire

*120v/60HZ

*31V Adjustment Positions: 2 Steps Range of current 50-80amp Duty Cycle: 15%@80A; 20%@65A;

Rated duty cycle: 10%@90amps Insulation Class: F Welding wire size:.035" to 040"

 

Can i use .03" wire to weld the 26 gauge steel to the body? If not what gauge and wire should I use for the body?? I have a friend that welds and he usually uses an arc welder which he let me borrow but it pretty much burns through all my practice metal.

[kijana]

The stuff you’re referring to is primarily used for sound dampening and insulation. I just did the same thing to my car, and there numerous post on here on how to remove it. Just search “ sound dampening”. I had the best results using a "Pneumatic scraper" http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=95826. It worked wonder for me.

[EMWHYR0HEN]

If your only welding wire choices are .030 and .035 go with the .030.

I don't know about flux cored welding but if you were using sheilding gas you would typically use .023 on most car applications.