Thread: DIY Turbo Manifold

I'm thinking about making my own DIY turbo manifold as I have access to cnc machine, tig welder, pretty much a machine shop. I know how to weld, not the greatest but there decent.

But anyways I have no idea when it comes to the tubing what I should be looking for or even using. All I know is that 16 gauge is to thin as I've read. And I'm assuming the bigger the tubing the better it will flow?

What size tubing do you guys think I should be using? I'm going to pretty much make it off of a gti-r manifold, but with better placement and a external wastegate. Eventually I'm going to make my own 02 housing also, I don't know which one will come first.

you need a o2 housing that looks like this

i think that looks awful personally

looks like it got beat with a hammer instead of doing pie cuts

read away:
http://www.honda-tech.com/forumdisplay.php?f=53

eh it doesnt look bad i feel fuction vs form.

I think charles@asp does great work. The lighting does not look so great the peice looks better in person

oo i agree charles does good work, there is always different ways to do things.

I just dont know what that filler piece by the flange is all about it looks weird to me

oh it def looks like a nice piece, it definitly performs better than the factory o2 housing, im still running the factory o2 housing on my gt2871r i know im loosing some power, i need a housing like you got

it looks way better than the other units I have seen made. Its hard to made a unit like this to look perfect. there will always be some manipulation involved

its my photograph. I am not good with my girls d90.

yea i hear that, what kind of pricing does it cost?