The dry ice myth is busted, at least on a 1998 Ford Mustang sound deadening removal. I used dry ice in various ways - direct on the material, in bags, taped to the bottom and nothing worked. Had 25+ lbs on hand too and allowed it plenty of time to get to as low of a temp as possible. Wouldn't crack and wouldn't chip off.
What works really well is a heat gun and a couple of metal scrapers. About 45 mins and Jeff G and I had the driver's side about 90% done. Tomorrow we'll have two heat guns and also give it a go with the torch. There seems to be happy medium where it isn't too cold, nor too hot, and it comes off in nice large sheets.
I calculated that one square centimeter of this junk weighs 5.5 grains. At 7000 grains to a pound and with a re-calcuation of the square area we come up with 7 lbs of material. A lot of work for 7 lbs, but with a car like this that is severely weight challenged you have to do it. Besides, leaving it was going to piss me off. I envision a nice tidy white interior for this car and having those deadening mats painted over would always remind me that I "didn't do it right".
We've also already separated a couple of wiring harnesses and removed non-required circuits that we can legally remove. Man, there are a metric assload of circuits on this car and I suspect we'll be 10-15 lbs lighter on wiring when we're all through. Be a lot of work though, but again, something that is needed. All these little pounds add up and put us closer to that unobtainable 2480 lbs weight.
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