Headers are finally done
 

HP-junkies and other interessted:

We finally got our headers TIG-welded. As you can see, our TIG-welder didn't quite use our detailed CAD-model, but he was very creative and used non-standard pieces of tubing to create pretty compact headers with almost equal-length primaries (even if it's not required in turbocharged cars). There is still some work to do, as porting of collector and sand-blasting weld seams.
As always, headers are compromise between space and teoretical model, but we are quite pleased.

http://buster/project911/log_images/header-4.jpg

Love It....a work of art.

What does one do to smooth out the welds on the inside of the pipe? Aside from a process such as extrudehone I can think of a clean way to do it.

Well it's quite easy actually...you use Argon as so called "root gas"...with other words, you fill pipes with inert gas before TIG-welding them...thay way, molten stainless rod flowing trough the seam doesn't oxidate forming "mushrooms" inside but just flows out making a smooth weld. Of course, we'll sand-blast and polish them later on. Material used is SS2333.

Here's one more pic (cheesy spangled fabric wasn't my idea, i promise! :D Our welder just needed some promo-pictures):

http://project911.luminasweden.com/l...s/header-6.jpg

Very good looking. The guy must be one bada$$ welder to pull that off. Kudos to ya goran.