Just finished modelling headers
 

I just finished a marathon 4-hours session of CSG-modelling a custom set of headers for out B234L-bolted-to-Garrett-GT40 project.

I used exacty same pipe and bend dimensions as our local stainless supplier has on sale (SS2353, 44.5mm diameter). I also went to great lengths to assure that cylinders 1 & 4 and 2 & 3 merge as late as possible into each of two exhaust ports in GT40 turbo. I'l try to do some FEM calculations later if i find suitable software, but we are going to use extra holes in the head to strenghten things up (it's a heavy turbo). Only 90 and 45-degree bends used.

Whadayathink?

http://forums.pelicanparts.com/uploads/grenror1.JPG
http://forums.pelicanparts.com/uploads/grenror2.JPG
http://forums.pelicanparts.com/uploads/grenror3.JPG

Cool

If you want to send me the model, I can do an FEM (FEA) for the weight of the turbo.

Though I think that you should plan on the turbo moving around a lot, just from thermal expansion. (I suppose you know this. . .never mind.)

Anyway, for support, I would suggest a bracket coming straight off the engine block. Either that, or maybe throw some gussets on there.
Kind of like:
http://forums.pelicanparts.com/uploa...or1[1].jpg

Thanx! I will use gussets and will find a way to support turbo trough extra structure bolted on cold part of turbo (probably bearing housing)...those pipes get pretty soft when they are glowing red and i don't trust them for supporting entire weight (i've seen headers that just "melted" down)

About FEM, model is done in CSG but modeller can also export mesh of objects...i'll see if i can get it in some exchangable format.

I actually used shareware modeller and freeware raytracer to do this...Solidworks is way too expensive for me.

IGES format would be great.

The meshing on my end is all automated, so no need for a meshed version. In fact a meshed version may cause problems.

edit

Anyone need translations, I can pretty much do anything, IGES, Unigraphics, STEP, parasolids, Solidworks... Catia even.

What program did you use to make those?

Looks like a bundle of snakes (I think that's what the original ones were called). Nice Work!