jumpman2334 Posted November 15, 2009 Share Posted November 15, 2009 ok, my 78 280z has a little bit of surface rust on the floor board, and i was scraping the thick, rubbery, sound barrier crap they put on there, it was such a pain in the ass (and i wanted to take all of it off, and make sure i got all the rust), then i came across this, skip to 6:15. dry ice takes that stuff off? anyone else got more info on this? thanks. edit: im a goober, forgot certain embad codes dont work here. heres the link. http://motormavens.com/2009/10/webmining-diary-of-a-serial-tire-killer/#comments Quote Link to comment Share on other sites More sharing options...
jumpman2334 Posted November 15, 2009 Author Share Posted November 15, 2009 oh and is it a bad idea to remove all of the sound barrier stuff, then get rid of the rust, then paint some flat black paint to seal it all up? i dont care if itll make the ride a little noisier... i just dont want to do it, and then down the road, find it serves another purpose i didnt know it did in the first place. Quote Link to comment Share on other sites More sharing options...
kiwi303 Posted November 15, 2009 Share Posted November 15, 2009 Lots of guys on here have been using dry ice... just use the terms "Dry" and "Ice" in the search box... lots and lots of info. Quote Link to comment Share on other sites More sharing options...
jumpman2334 Posted November 15, 2009 Author Share Posted November 15, 2009 aweome. will check it out. i just had no clue that putting that on there would work. thanks. Quote Link to comment Share on other sites More sharing options...
JeffGarcia77 Posted November 16, 2009 Share Posted November 16, 2009 Jumpman, I believe you have to "freeze" the sound insulation/vibration damping crap with the dry ice, then whack it with a hammer while it is brittle. This action is supposed to free it from the metal. Hope this helps. Quote Link to comment Share on other sites More sharing options...
Avernier Posted November 16, 2009 Share Posted November 16, 2009 I see your in sacremento, up north we just leave the car outside in the winter lol...dry ice works very very well. although you can also get a small blow torch and heat it, then scrape. its nearly as easy... Quote Link to comment Share on other sites More sharing options...
JeffGarcia77 Posted November 16, 2009 Share Posted November 16, 2009 although you can also get a small blow torch and heat it, then scrape. its nearly as easy... Yes, but wouldn't that stink up the interior, like a hot mop roofing crew had been working in his car? And wouldn't the heat ruin the undercoating on the bottom of the car? I'm assuming his car is street driven. I would go with dry ice. Quote Link to comment Share on other sites More sharing options...
Mycarispurty Posted November 16, 2009 Share Posted November 16, 2009 Dry ice is fun to work with on this, done it on 2 cars. Gotta watch out when you're chipping away the brittle floor coating so big chunks dont fly up and hit you in the face lol Quote Link to comment Share on other sites More sharing options...
cd1105 Posted November 19, 2009 Share Posted November 19, 2009 I just removed the sound proofing crap from my floor pans too. I used dry ice on one side and a blow dryer on the other. Both worked equally good. Quote Link to comment Share on other sites More sharing options...
jumpman2334 Posted November 20, 2009 Author Share Posted November 20, 2009 for the hair dryer, wouldnt it make it all goey and such? oh and would removing the sound insulation stuff make the inside louder by a noticeable margin? i really wouldnt mind. i was just planning on removing it all and doing a few coatings of some industrial grade rustoleum flat black paint. would that be good to do? or should i try and do the rubber coating again? Quote Link to comment Share on other sites More sharing options...
hoov100 Posted November 20, 2009 Share Posted November 20, 2009 All the factory insulation really did, was lower higher frequency noises. I removed both floor boards, trans tunnel and the rear hatch with a 1" an a 1/2" chisel and a hammer. Quote Link to comment Share on other sites More sharing options...
jtburf Posted November 21, 2009 Share Posted November 21, 2009 We removed all of our hard rubber insulation with an air chisel, found some rust pits but not holes, sand blasted and primed. Yesterday I found this coating it is a local company. I have been told if you use this and Dyna mat it will insulate and sound deaden beyond what new cars have. http://www.lizardskin.com/ LizardSkin® Sound Control Formula LizardSkin® SC formula is an advanced, water-based composition of high-grade acrylic binders with sound-damping particles. Proven sound damping technology enables LizardSkin® SC to dramatically reduce noise when properly applied. It also protects surfaces from moisture and corrosion and can withstand temperatures to 300° F. (149° C.) Call 1-800-549-0043 to order How Much Do I Need? LizardSkin® SC is used by custom car, street rod, truck builders and RV owners who want to reduce unwanted noise and/or enhance the sound of their high end audio systems. It is best applied by special spray gun to a clean and dry primed or painted rust-free steel. Typical applications include firewalls, floor pans, transmission tunnels, doors, hoods, trunk lids, under headliners, inside fenders, panel van walls and other areas that generate vibration and noise. For maximum acoustic performance, coat entire interior surface and the floor inside and out. Dramatically reduces noise and vibration Protect surfaces from moisture and corrosion Withstand temperatures to 300° F. (149ª C.) Class A Fire-rated Each 2 gallon container covers 40-45 sq. feet @ 40 mils (40 mils = 1 millimeter) For detailed product information, please download the LizardSkin Sound Control Spec Sheet and the Master Safety Data Sheet. Quote Link to comment Share on other sites More sharing options...
piston Posted November 22, 2009 Share Posted November 22, 2009 ey, whats up, im from sacramento also and you can find dry ice at savemart on fulton and marconi. lol. but yea, i would not use it if i was you. i tried it 4 weeks ago and it takes longer than you would think. you would have to leave it on there and work sections at a time only because it will only cover so much 1x1 square. i used a nice machanix glove with cushion to protect my palm and chisel/hammer/screwdriver away. way faster than waiting for the ice to kick in. i used a pudding knife to scrap/knock extra tiny pieces off because it covers more ground with one sweep. as crappy as it looks, it same out alright with just one coat of rustbullet spray. Quote Link to comment Share on other sites More sharing options...
datsun723 Posted November 22, 2009 Share Posted November 22, 2009 ^looks good. Mine is actually just coming off by hand in some places. Woot! I'll post some pictures when I'm done. Quote Link to comment Share on other sites More sharing options...
shika805 Posted November 22, 2009 Share Posted November 22, 2009 mine what all brittle and came off by hand... i have linex as a new sealent, sound deadening and coat on the floor of my car. Quote Link to comment Share on other sites More sharing options...
cd1105 Posted November 22, 2009 Share Posted November 22, 2009 ^looks good. Mine is actually just coming off by hand in some places. Woot! I'll post some pictures when I'm done. same for me with the hatch. I used dry ice on the floor pans, but the hatch deadening came up in huge chunks. Quote Link to comment Share on other sites More sharing options...
MONZTER Posted November 22, 2009 Share Posted November 22, 2009 I used liquid nitrogen, it literally jumped off the floor in 30 seconds per section Just be safe Quote Link to comment Share on other sites More sharing options...
Tony D Posted November 22, 2009 Share Posted November 22, 2009 Says the man with the LN2 Dewar at work... Quote Link to comment Share on other sites More sharing options...
MONZTER Posted November 26, 2009 Share Posted November 26, 2009 You can actually rent a Dewar from Praxair in Santa Anna, It was a few years ago, but I remember it being pretty cheap. BTW Praxair is a welding supply company for those who don’t know. It was a few gallons worth. If you have any extra of the liquid nitrogen you can mix it with milk and have fun with the whole family and some homemade ice cream Yaaaaah. No don’t do this… Quote Link to comment Share on other sites More sharing options...
datsun723 Posted November 26, 2009 Share Posted November 26, 2009 You can actually rent a Dewar from Praxair in Santa Anna, It was a few years ago, but I remember it being pretty cheap. BTW Praxair is a welding supply company for those who don’t know. It was a few gallons worth. If you have any extra of the liquid nitrogen you can mix it with milk and have fun with the whole family and some homemade ice cream Yaaaaah. No don’t do this… Hahahaha Quote Link to comment Share on other sites More sharing options...
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