betafoam

[e34john]

anyone use this or any of the other structural foams to foam fill the chassis? Seems like it would help out the unibody a lot plus for my dailydriver/weekend warrior it might quiet things up a little.

[KenC]

link?

[german g]

sounds interesting..

[asubimmer]

sounds interesting..

sounds heavy

[CarsSuck]

well actually, its mostly air so the density once expanded is going to be very low while ( i would imagine, given the application) being very strong and rigid.

[euroshark]

Yeah, even heavy duty expanding foam for housing purposes is pretty damn light. This has me very interested...

[jlevie]

In a track car I'd be concerned about flamability and what sort of gases are produced in a fire. One option for reducing noise in a dual -purpose car would be "creative use" of welding blankets...

[MarshallM]

Its common to have thu stuff in a,b,c pillars from the factory on lots of cars now. Ive seen some aircooled VW guys do it. Usually makes a huge mess due to not being able to predict how much will be nessasary to fill a panel and tons of it comes oozing out. Also if the panel isnt sealed well and water gets behind it some nasty rust will form. You can find the stuff at aircraft suppliers like aircraft spruce. Comes in 3 hardness levels.

Here is a link. http://www.sportcompactcarweb.com/pr..._300zx_part_5/

[euroshark]

Oh hell yeah! Great article, I'm so doing this!!

[e34john]

/\ /\ That was the link I saw too. I heard Handifoam is NLA but you might be able to find it, heres a link to Betafoam. http://automotive.dow.com/materials/...am/product.htm I wonder which one would work best for us.

[euroshark]

Honestly, I think a lot will depend on the price! How much is one betafoam kit?

[BimmerToad]

great idea, but I'm uncertain about the part of putting a water proof foam through the water drain holes of the frame. Where does the water go instead?

edit: You could try it by first experimenting on the front subframe and see if it stiffens the front end a bit.

[e34john]

I think,you can do the entire car for less than $300, the 300ZX using Handifoam was just at $200.

Im not sure about the water either I don't even know where to put this stuff, I just saw it while looking for roll bars. If the entire thing is filled while the frame was dry wouldn't that stop any water from entering.

[joshh]

Keep in mind the foam does nothing for safety. Might as well just get a roll bar.

[e34john]

But some guys mainly autoX where a roll bar isn't necessary. I think this thing will add less than 20 pounds to the car while increasing rigidity dramatically.