http://www.itwfoamseal.com/auto_aftermarket.htm

discuss.

play nice

 

Lot's of carmakers fill parts of the body with foam for stiffness. I'd like to try that stuff on my car if I had the $$.

 

GD?

 

How hard does it get? It says on the site, it helps to stiffen the chassis, but I would think it would help noise damping much more.

 

They put that in q45's stock,it is great for SD .in SCC it says that it "can increase stiffness by up to 300 percent". In the density they used it increased the rigidity by 40%,on the 300zx.that was the 2lbs per cubit foot kit,they used five kits and they added 10lbs total to the car to gain 40% in rigidity! Im doing this coming in summertime.another good thing about this foam is it doesent need air to dry.

 

SCC article

 

How do you install the stuff?

 

spray it into a hole...as it dries it expands. c'mon man read the article!

 

...my bad.

 

Dan, you think this stuff will work as well as the SFCs? They rave about this stuff in the article. But one thing. Wires. I wonder if any of the wires are run though the two rails the 3 gens have. How in the hell did they inject it into the rocker panels? Wouldn't it just push out against the interior panels?

 

I was thinking of using similar stuff to hold the components of my in-car PC lol

 

as well?? well i don't think it'll be as good as a set of CORRECTLY installed and designed SFC. but i think for the bang for the buck it's close.
not sure exactly where they injected the foam..but where ever u see a hollow pipe w/o wires/hoses/lines you shoot the foam in.
imagine SFC w/ foam injected inside.

 

So I read the article, and I'm not a genius with body work.

So what do you inject it into for sound deadening??
Your door panel? Inbetween the rear quarter panel and the plastic wheelwell cover?

I know it's a stupid question, but i don't see how just putting it in the frame helps with road noise....

Can someone explain?

 

The rocker panel is a hollow tube, usually with no wires in it. They removed the door sill trim and injected it through those mounting holes. You could do it in the pillars too, but the stuff would drip down into who-knows-where. You'd need a way to block off the bottom of the pillar so you could fill it up from the top.

It cuts road noise by making the whole chassis stiffer. Noise is transmitted through the cabin because the whole car vibrates. When it's stiffer, it vibrates at a higher frequency. Hopefully higher than the frequency of the road noise. Since it now has a higher resonant frequency, the road noise does not excite the structure like it used to.

 

whoa, looks like i learned my new thing of the day. Hmmm..... i'm so hard up for getting rid of my road noise. This is definately a good idea.

 

LMAO!!

DW

 

Sounds like a good bang for your buck. Has anyone here done this or had this done and with what results? I will look into it further and probably have it done or do it myself this spring.