kevincnc

Good idea, thanks.

kevincnc

I made a little progress, and really glad I got a throw-away airbox to practice on. First I broke it completely on the mill not paying attention. After glueing it back together, I found out that JB Weld is a bad choice inside the airbox, and doesn't stick to it very well. I had the tube glued and smoothed-in for testing, and realized that the box was really twisted, so decided to test the strength. It broke apart easily and the JB weld shattered into lots of little hard pieces that would not be turbo or cylinder-wall friendly. For the final version I'll use something soft like Silicone and also rivet the tube in.

The pictures below start to reveal my seccret evil stealth plan..



I hacked a pair of old Craftsman channel-locks to make the bellmouth larger and more uniform. It worked pretty well so I decided to put this tube into the final version after a little more refining.

gt37vgt

those form jaws are out standing kev your a real
"CAN DO"

Alpine951

Why not make it out of pvc tubing and use a heat gun like on Autospeed?

kevincnc

thanks I though someone would like that.

That might be a better way to go, I actually hadn't seen that article until half way through this. I guess the thin wall of the aluminum helps because the hole through the airbox is absolutely as big as it can be, and a thicker walled PVC pipe would be smaller ID. Maybe there's some 1/16" wall 3" PVC out there, I don't know.

Here is the hole through the AFM before inserting the 3" tube-

lleroyb

They make pvc bell ends and very thinwall conduit called DB. It is primarily intended for underground use, usually cast in concrete. The bell ends are made to provide a smooth surface for wire pulling. Carlon is one of the major manufacturers of the conduit and bell ends.

This looks like a good project, BTW.

Lou

Eyal 951

PVC lets out some bad toxins to the environment when it sees heat. Also, its gonna burn easier then Aluminum. Its probably gonna get somewhat malleable with the temps under the hood of a 951.

Jeremy Himsel

PVC is only bad for the envirinment (gas form) and people once it sees temp upwards of 750 degrees. Vinyl Chloride, a known carcinogen, is only nasty once it's heated to the point where is omits HCL and then nasty stuff starts to happen. It'll need to see temps of 300+ degrees with a mechnical force to melt in this case so it's safe for the application.

Eyal 951

Good to know.

lleroyb

It looks like there is an even thinner version of conduit called EB, 3" is .061 wall.

http://www.carlon.com/Master%20Catal...t_Brochure.pdf

Lou

sweanders

Try a HiFi shop: