It is hard to believe that no one has made there own header out there. Perhaps my searches are inadequate, but surely with .dxf/.ord header flange files floating around someone has a build up on one?

 

ya know, i was planning on building one when I was thinking of converting mine back to a turbo engine, just kinda dropped the idea and decided to stick with the 22re...guess i still could use some header action though...put one together so the rest of us will know how

 

If someone did build one why would they post the file on how to build it instead of using it to make money? Don't think you are going to find one.

:wabbit2:

 

http://www.jefflilly.com/fabrication...r-fabrication/

There are some turbo manifold builds I've come across. No 22re specific header build. It seems fairly straight forward, with minimal bends, compared to other applications. LCE style 4 into 1 or the highly praised tri-y design will definitely have an impact on difficulty.

Is building a decent header not within the parameters of the home fabricator? I hope to prove otherwise.

 

IMO unless you can flow test the headers it's not worth it to build one and can result in power losses over the OEM manifold, which isn't that bad to begin with. You absolutely have to get the runner lengths , collecter etc etc perfect to gain power. By the time your done buying tube, welding material etc etc, you might have just as well got a cheap header.

 

you can use Cosmos to get flow rates...

 

pulse width and back pressure data too?

 

I would assume pulse width would have to come from motor specs, and would vary with RPM, I believe you can factor in back pressure into cosmos..

I helped a friend out using cosmos to design an intake manifold for a viper.. I was much better with SolidWorks then..

He was able to design in cad then fabricate and test..