sound deadning?

BradGTV · April 28, 2011, 05:40:23 PM

wondering how people remove the sound deadning from there race cars?
obviously there is the slow and painful way of hammer and chisel but any others more effieceint processes?
cheers, Brad

Evan Bottcher · April 28, 2011, 06:40:44 PM

I used a $20 heat gun from Bunnings. Made scraping effortless, then the residue came off with thinners. Didn't even remove the paint underneath in most places.

Sheldon McIntosh · April 28, 2011, 07:47:40 PM

I used Evan's $20 heat gun from Bunnings. Made scraping effortless, then the residue came off with ~~thinners~~ WD40.

alfa duk · April 28, 2011, 08:07:37 PM

Same here with the thinners and a couple of cartons over Xmas, not really a summer job. I have heard of people using dry ice which turns the bitumin brittle but never tried it.

aggie57 · April 28, 2011, 08:17:13 PM

I've always just used a hammer and large screwdriver. Just comes off in chunks. Takes nomtime and no fumes or stuffing about.

Frank Musco · April 28, 2011, 08:38:22 PM

Yep, hammer and screwdriver/paintscrapper. I find there are much better ways of getting Hi!

Each to their own, I guess?

pep105 · April 28, 2011, 08:49:45 PM

Yeah Ken Oath, hammer & screwdriver/scrapper did the 105 floors this way was pretty straight forward

One of the few jobs i did without swearing

BradGTV · April 29, 2011, 08:32:25 AM

thanks guys, looks like ill be using the screwdriver/paintscraper/chisel then some prepsol or wd40 depending what works best. should make for a very fun day

cheers, Brad

hammer · April 29, 2011, 09:10:04 AM

I used the hammer and chisel method in my 75 and it took forever. Next time I'll go see Evan's mates at Bunnings for a heat gun.

Neil Choi · April 29, 2011, 09:30:57 AM

Brad

I have done about 4 cars over my life time, yes, hammer and a sharp chisel is the way to go, some of the brittle bits come off easily as large chucks but the softer bits take a bit of scraping. It takes about 2-3 hour per quarter to be completely cleaned, so I would allow 2 days. Takes about 20 kg out. Also don't forget to do the boot, another 7 kg out. I also used a wire brush on an angle grinder to finish off cleaning. The seam sealant is the bugger of stuff to get out.

Petrol is good to take off the small bits.

I totally disagree with pep105, there is a lot of swearing involved especially the part when you hit your index finger knuckle upon mis-striking the chisel for the tenth time.

Sorry pep105, missed the sarcasm, just I am just about to go down to the shop and buy some more!!!
Neil

alfagtv58 · April 29, 2011, 09:36:20 AM

Heat gun for me......with good ventilation.

pep105 · April 29, 2011, 03:29:45 PM

Yeah Neil I lied now that I think about it there was some swearing............

Nothing a couple beers and a few scotches wouldn't fix.

Sheldon McIntosh · April 29, 2011, 04:14:20 PM

Quote from: Neil Choi on April 29, 2011, 09:30:57 AM
I have done about 4 cars over my life time, yes, hammer and a sharp chisel is the way to go, some of the brittle bits come off easily as large chucks but the softer bits take a bit of scraping. It takes about 2-3 hour per quarter to be completely cleaned, so I would allow 2 days.

It would take about an hour to do a quarter with the heat gun. I found that only the bits in the boot were brittle, the stuff inside wouldn't chip off. Must be the 'luxury' sound-deadening they put in the 90.

alfa duk · April 29, 2011, 06:08:33 PM

The hammer and chisel method may be quicker but you remove the undercoat and damage the metal catching on everything as the floor is not a flat plate on a gtv6. Even with the heat gun it is not an easy job and the estimates of a quarter an hour are optimistic, if you got it off that quick, well the apprentice must of put it on. With the heat gun i cut a piece of hardwood timber to a sharp point that was strong enough to take the deadening off but not dig in, maybe use a hammer with that. It takes longer but the end result is better.

Sheldon McIntosh · April 29, 2011, 06:39:39 PM

Quote from: alfa duk on April 29, 2011, 06:08:33 PM
Even with the heat gun it is not an easy job and the estimates of a quarter an hour are optimistic, if you got it off that quick, well the apprentice must of put it on.

Well, I'm not sure if you're accusing me of lying or of my short-term memory being a bit dodgy. Or maybe you're saying my short-term memory is a bit dodgy.

It's possible that the sound-deadening I took off my car was different to the sound-deadening in your car. Or that different climactic or storage conditions had affected the sound-deadening differently. Or that, as you say, the apprentice applied it (and it is probably true that the 90 floor has more large flat sections than a GTV). Either way, I stand by my assertion, and you're quite welcome to not believe it. I think though that I have a reputation on this forum of not exaggerating my skills or experience.