On the other forum a member posted pics of the mock up he made. It looks like itd be so easy to make one. Maybe it wouldnt be perfect as far as runner length, diameter, etc etc(all the things outts my league!), but it seems like being divided it would still be better than the undivided ones they sell to fit To4's.
Why isnt this more common? I want to upgrade to a T04 but cant afford it, but this would make it more possible.
Please be specific with your awnsers.

 

Also where on the manifold should the pipe to the wastegate be? It just dawned on me that there wasnt a spot for one on the manifold pics I mentioned before.

 

"is there anybody outhere just nod if you can hear me"
Roger Waters

 

That would be me on the other forum! I'm thinking of putting the wastegate piping in a bit after the two runners come together. Hopefully that'll work

 

Are you talking about making a cast manifold, weld-el manifold, making your own flanges, or what?

HKS makes a divided manifold to mount a T04 on a 2Gen. In fact, I think that the budget HKS T04 cast manifold sells for under $300.

The pipe for the wastgate should gradually branch off the collector, but sometimes this isn't possible due to space requirements.

 

I, like, Manolis(good to see ya!) would use pre fabbed flanges, but after looking around the HKS undivided is really cheap, I could get one for around just over 200$ from Nopi

 

So does that answer your question as to why hardly anybody bothers to make one themselves, or to crack their own crude oil to make gasoline, or to blow their own glass to make a windshield, etc. ?

Anyway, if you want to learn more about turbo manifolds, Corky Bell's "Maximum Boost" book is excellent in this respect. However, ignore the part about severing the flange, as a solid flange is better for the rotary engine's sandwich design.
http://www.amazon.com/exec/obidos/tg...glance&s=books

 

Yeah thats a good book, I bought it and read it a couple of years ago.
I was under the understanding that there is a very big difference in boost resonse and all around efficiency from divided to nondivided. Thus making your own divided would save one from the high cost of a good divided manifold. You made some great analogies though! "Blow there own glass"! Or how about blow your own glass pipes then sell them at Phish shows and earn enough $ for a good manifold!

 

Can someone post a link to the other forum or site or whatever that has the pics and what not?
Thanks

 

Making it is not the hard part if you can weld. The hard part that goes into making turbo manifolds is to make one that creates as less turbulence as possible. The best way is to make the the tubes comming out of the plate face forward and not in a small "u" shape that meets at the turbo's base plate. To give you an example we make our own for the Drag Car and the best results came this way. Our turbo manifold goes forward and up the turbo is close to the strut tower to be exact. I'll have to post some pics of the engine.