I was watching some show, Tuner Car Challenge (something like that), and the filled a skyline's frame with hardening foam to stiffen the chassis... has anyone ever heard about that? It would be pretty cheap if you could get to the frame

 

I saw this show also...it had the owner of XS Engineering in it. I saw that foam stuff ans was like wtf

 

Is that the show that's putting a Skyline against a Jetta?
But the foam is a pretty interesting idea

 

Yea, it is... it was the jetta, skyline and some other car. When is that on?

Anything else on the foaming?

 

that's the alternative to a fully custom frame. i've heard of it but it ain't common.

 

its not really cheap to do, but it does help alot. The other problem is, if you hit something and bend your frame rails out of shape, your shyt outta luck, cause it will not move when you try to realign the frame. Here is a link to a company that sells it. Its all the way at the bottom.
http://pagebank.sun-inet.or.jp/~bellco/essh.htm

 

Why not:

1. Cut the framerail out
2. Weld in a new section
3. Refoam

 

lol. I suppose you could do that, but you would lose a lot of structural integrity by doing that, wouldn't you?

 

Where would you loose structural integrity?

You would be cutting out the damaged framerail plus some extra meat so you can repair onto a straight part.

Now you remove the damage that is hurting your integrity level and replacing it with new metal. Then foaming to replace what is missing.

Where would the loss be?

 

I think he means by weilding--but it's almost the same thing as cutting a peice of bad wire out, and soldering the two ends together.

 

Welding wouldn't cause a loss. Unless the technique is poor or the filler metal was wrong.

I do some welding at work and the welded area is stronger then the base metal.

If the base metal (your framerail) has a 60k tensil strength then you would use a matched tensil strength filler metal.

Lets say you do mig and you use a ER70S-6.

The 70 is for minimum tensile strength. The filler metal is now stronger.

The technique could be a weak point if there is porosity, cracks, slag, impurities, or if the heat effected area is warped. Just a few I might have missed some.

I am actually doing a framerail repair on a ae86 which has damage like a lot of 240 owners have. Jacked too many times on the same spot and now it is crushed.

I will post the link to the pictures and writeup when I am done.

Oh I am also an ASME Certified welder in a few techniques. Please ask any questions you would like. I love learning and sharing whatever info I have.

http://www.importfanatix.com/Forums/...ad.php?t=14624

Peace

 

way too expensive. that'll take a lot of time too.

 

Labor or parts?

 

labor

 

yeah, I thought maybe the welding might sacrifice the strength of the metal, but I didn't know.