YUP!

I have done many inner fire walls with dyna mat or Fat mat (cheaper but good imitation). when combined with re-sealing the back window it makes for a nice quiet 914. I would like a ride in a 914 where a spray-n product was used.

alot of new metal under this one.
since I coated all the metal, I did not take scotty b's advise but his technique will work. most aproach sound deadening from an insulation point of view. scotty's technique will stop the panel from resonating to the frequency of the road noise. it is not required to cover every square inch but it is critical to have 100% surface contact with the deadening material to the metal

two layers or one layer of rattle trap extreme

very important to seal the rear window very well. this a huge source of cabin noise

...cant find the floor pics

WARNING!!! POR 15 DOES NOT STICK WELL TO CLEAN METAL. if applied to clean metal, it must be etched first

the metal got well etched from the wire wheeling.
also, if you follow the directions on the Por15 prep products, you end up with a little flash rust. At least when I did this to my car in 2005, the directions indicated not to remove that rust, but to paint over it to give more tooth to the paint. I know that Joe used all the products, so I am sure he will have a good finish.

Zach

Sean is referring to a CHEMICAL etching that is required for POR to adhere properly. It is no different than an etch primer used on the exterior prior to priming. Physical etching only will not allow the paint to adhere properly. Chemical etching allows the paint to " bond " properly with the metal. All a physical etch does is gives the paint a rough surface to grab to. In time that bond is much more likely to fail.

Isn't Metal Ready an etching product? its one of the pre-steps for por-15

Zach

Yes, Metal Ready is an etcher. I use Marine Clean and Metal Ready prior to epoxy primering.

Geoff

I used Prep & Etch. It is cheaper and readily available from Homedepot. I also used Rust Bullet instead of POR15.

http://www.homedepot.com/webapp/wcs/stores...;endecaDataBean

Yes metal ready is proper, from what you stated it sounded like all Joe did was wire brush and apply the POR. I still don't like the stuff

any tips or tricks on installing the sound mat. I would love to hear what Not to do, as well as what you would recomend

Scotty, thanks for the tip on leaving the channels open, I would have just coverd everything

I am not familiar with the sound deadening you are using but remove alll surface contaminants. degrease, then wash with soap and water, rinse twice. put car in sun. hot metal, hot sound pad makes it conform to all the shapes easier and makes the glue backing super tacky. BE CAREFUL. it will want to stick to anything it touches instantly.

for etching on teh cheap HD racing as suggested above, has what you need. frazee paint stores sell Ospho. other places sell Jasco.
etching takes time. how long you leave the stuff n there is fairly important

the stuff i used said to keep all surfaces wet for 20 min. i followed the directions. It came out great so far

now i am ready for the sound pad layer

then the foam layer

then the luxury liner

then put my car back togeather

Some work on the project yesterday

and one picture for scotty. See, i do listen to your pennies.

I've been thinking about using a different approach.

I just don't like the idea of scraping off all that old tar and fixing the rust to then seal everything off afterward so water can get back in and start rusting my car again.


So, my idea is to paint the floors etc. after rust removal and then add the sound padding material to the backside of the carpet.

I think this would still work pretty well and makes for easy removal to inspect the floors every once in a while.

You could have saved yourself so much time, aggravation and money if you had just bought that JDM equipped Miata

Not to hijack... okay I did sorry...

Has anyone used a product called Lizard Skin... have seen it advertised and viewed their website but it cannot find any opinions on it

hijack out.

there was a thread on it recently

http://www.914world.com/bbs2/index.php?sho...5&hl=lizard

"unhijack "

On a Truck i restored a few years ago i was having lots of road noise issues so i had the undercarriage Rino lined and they can put that stuff on any color you want practically. It works quite well and it didn't cost a small fortune like dyno mat. It made a world of difference. A friend of mine that builds off road trucks told me about it and i didn't believe him. I plan on getting mine done as soon is i'm finished with the rust. The drawback is the weight, if you race your car it does add a good bit of weight.

I am jumping into phase 2. Overkill It really is called "overkill" and it is soo much more fun to work with. I also got my cluster back from Bdstone914 and it is bueatiful Thanks again Bruce. I will post more as i go.

FANTASTIC!

Zach

I put the interior back togeather last night. Man, was that a tight fit the next steps on this project will be the doors and the front trunk.

I have seats again
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The carpet is from 914 apperance and performnance. Camel, very nice.
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First class. Right on. Superb.

NICE!

Nice work! That really looks good. I can't wait for the sound test.

First the praise. You did a very clean job of it and that camel looks great, I am sure even nicer against the blue outside. I am curious though how much of the materials you used and what do you figure it weighed?
Additionally, have you driven it yet to report on the improvement?

Its not Done yet,

I did drive it today, but i still have the doors to do, the 3 part targa seal, the rear targa seal. and then i will calculate the weight for ya Untill i get all the wind noise gone, i will not know.

I do have a Phonic PAA3 meter that i will use to measure the sound levels.

Joe, I'd like to measure the sound levels in my car some day when you get a chance.

Zach

Looks awesome great job dude. how did the carpet go in? what did you use to attach it and did you have to heat any up to get around the e brake area? thanks

Carpet went in easily, but you only get one shot with the adhesive i used. It is more sticky than any 3m product i have ever used. It almost has a spray/ sillystring kinda effect. Got it from the second skin company, figured i would try it. I highly recomend it.

As far as the Ebrake area, i just ran the carpet straight, then once i had everything tight on the straight edge, i grabbed the ebrake and put it up and down a few times, it created the shape just perfect. I was a little worried about that area before i did it.

this is the stuff
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Thanks for the compliment

A few years ago I wanted to build a quiet Beetle, so I pulled up sections of the floor covering on some "modern" cars that were available to me: Mercedes sedan -- inside, I found paint, wool felt and wool carpet. Underneath the pans was an applied elastomeric coating. Acura Integra -- Paint, rubber, foam, carpet. No undercoat. Chevy -- Paint, foam, rubber. None of these cars used much if any cement under the interior finishes except at a few spots.

My conclusion was to apply an elastomeric coating underneath, but keep it "loose" inside. I went with a customized rubber liner over the fresh pans, felt and German carpet. I did insulate the engine bay with a heavy applied tar board. Can't remember the vendor. It was quiet.

It's apples and oranges, but I think strategies dealing with resonance and wind noises are more effective than blanket "insulation" underneath the interior finish. How that applies to 914 I haven't quite figured out yet. I also think that blanket insulation will work as well to eliminate noise, but the stick-on applications are less satisfying if you consider the potential problems "down the road."

This is a neat thread with a lot of information and where the opinions expressed are based on expertise instead of conjecture. Thanks for that.

Just got done reading this whole thread. Great read!! My 914 is at the same stage (removed factory deadener, addressed/treated rust, painted floor pan and longs etc. )

My question is what brand of deadener was used on this and where can I get it ?

I like the plain look and will also not put any deadener in the 'channels' . Thanks!!

Second Skin Audio Products