Thread: Tubular Manifold Build

Lol,Aston you beat me to the post.

Yeah, lol.

Vadim, again highly suggest relocating the collector more level. Reclock the turbine housing and redo the jig

this is one i did an d has room for a/c too.I would position the compressor housing close to the distributor so that the exhaust housing would sit closer to the head.

After breaking my head on how I would get them connected, I'm with you guys. Mad respect goes to Bruce from Protech for being able to make this guy...



Manny made 524whp on one of those manifolds.

I will check my fitting again tomorrow. If I have the flange too flat I will have issues with my Koyo and slim fans. This is why this design is so appealing, compact .

Nice progress. So far so good huh?

This manifold worked great. It was a very simple design. A good friend of ours still has this manifold.

So far so good, but I haven't even made any real work on the manifold itself. It has mainly been prep work. Now I might have to reconsider making a compact mani.

What would you guys say about a 4-2-1 design turbo manifold (1-4 paired, and 2-3)? It would make my life a lot easier trying to put them in the flange. Reason I'm asking is, if I do 4-1 and keep it rotating in the firing order, cylinder 3 would be next to 1. Cylinder 3 will have a runner about 2-3" before it would have to be cut to merge with cylinder 1. Cylinder 1's runner would be a good 4-5".

Did you not get a merge collector with your DIY kit? If not Id suggest just getting one and going with that. Keep it as simple as you can.

My DYI kit was pieced together by myself . Even if I get a merge collector, it will not fit in unless I don't angle the flange and bring it out more. I would rather avoid doing that for fitment reasons .

I'm really tempted to do a 4-2-1 design though. Especially since NA headers are build like that. Would make it easier on the wastegate placement too.