# Friend Just Finished Making Ecotec Header...
**URL:** https://forums.speedlife.net/t/friend-just-finished-making-ecotec-header/248406
**Category:** Shift518 Automotive
**Created:** [November 16, 2009, 2:00pm UTC](https://forums.speedlife.net/t/friend-just-finished-making-ecotec-header/248406 "2009-11-16T14:00:36Z")
**Posts on this page:** 20
**Page:** 1
### Author:  [@edubs](https://forums.speedlife.net/u/edubs)
#### Post date: [November 16, 2009, 2:00pm UTC](https://forums.speedlife.net/t/friend-just-finished-making-ecotec-header/248406/1 "2009-11-16T14:00:36Z")
My friend that did the fabrication for my turbo setup just finished making a header for a Cobalt with the 2.2L Ecotec motor. Thought this may interest some. He specializes in custom intake, exhaust and f/i applications using T304 stainless.
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### Author:  [@edubs](https://forums.speedlife.net/u/edubs)
#### Post date: [November 16, 2009, 2:01pm UTC](https://forums.speedlife.net/t/friend-just-finished-making-ecotec-header/248406/2 "2009-11-16T14:01:59Z")
Sorry for this pics being redic huge…
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### Author:  [@psi2high](https://forums.speedlife.net/u/psi2high)
#### Post date: [November 16, 2009, 2:02pm UTC](https://forums.speedlife.net/t/friend-just-finished-making-ecotec-header/248406/3 "2009-11-16T14:02:56Z")
Looks pretty nice. Is the guy local?
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### Author:  [@edubs](https://forums.speedlife.net/u/edubs)
#### Post date: [November 16, 2009, 2:08pm UTC](https://forums.speedlife.net/t/friend-just-finished-making-ecotec-header/248406/4 "2009-11-16T14:08:06Z")
I think he does good work.
16ga. T304 SS TIG/Perge welded…
Port Byron, NY 13140
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### Author:  [@Boxersix](https://forums.speedlife.net/u/Boxersix)
#### Post date: [November 16, 2009, 2:28pm UTC](https://forums.speedlife.net/t/friend-just-finished-making-ecotec-header/248406/5 "2009-11-16T14:28:55Z")
Port to runner transitions need some work, as well as the collector, but for a budget header with a stamped merge it doesn’t look too bad.
I can tell you fop a fact though that it was _not_ back purged…at least not very well at all.
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### Author:  [@edubs](https://forums.speedlife.net/u/edubs)
#### Post date: [November 16, 2009, 2:30pm UTC](https://forums.speedlife.net/t/friend-just-finished-making-ecotec-header/248406/6 "2009-11-16T14:30:34Z")
It may not have been. He usually does, but I wasn’t there when he built this one…
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### Author:  [@Boxersix](https://forums.speedlife.net/u/Boxersix)
#### Post date: [November 16, 2009, 2:36pm UTC](https://forums.speedlife.net/t/friend-just-finished-making-ecotec-header/248406/7 "2009-11-16T14:36:38Z")
Just pointing it out for you that’s all. You can see the oxide “sugaring” on the inside welds, especially in the collector.
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### Author:  [@RocketPunch](https://forums.speedlife.net/u/RocketPunch)
#### Post date: [November 17, 2009, 8:12am UTC](https://forums.speedlife.net/t/friend-just-finished-making-ecotec-header/248406/8 "2009-11-17T08:12:11Z")
Hey, edubs.
Do you know what does your friend’s header design base on in terms of calculations (header diameter, length and outlet sizing); and what kind of reference does he use for the such design and calculations? Does he know any good books on this subject besides “The Scientific Design of Exhaust and Intake Systems” by smith/morrison?
Thanks.
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### Author:  [@KrazyKid](https://forums.speedlife.net/u/KrazyKid)
#### Post date: [November 17, 2009, 8:23am UTC](https://forums.speedlife.net/t/friend-just-finished-making-ecotec-header/248406/9 "2009-11-17T08:23:18Z")
> [@New Show on SpeedTV: Forza Motorsports Showdown](https://forums.speedlife.net/t/new-show-on-speedtv-forza-motorsports-showdown/21718/29):
>
> Just pointing it out for you that’s all. You can see the oxide “sugaring” on the inside welds, especially in the collector.
Nice work BTW OP.
You know I am new to the tig process and I love it BTW. But I havent taken the time to look into back purging yet. From what you just said, I assume it is shielding gas pumped inside the work, to keep the penetration inside the projects welds from contaminating? I noticed that when I was welding up my charge pipes for the jetta and the wastegate/exhaust work I did too. The welds outside were butter, but the inside was all dumpy looking.
please enlighten me, not to steal the thread.
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### Author:  [@kramerbuccs24](https://forums.speedlife.net/u/kramerbuccs24)
#### Post date: [November 17, 2009, 8:56am UTC](https://forums.speedlife.net/t/friend-just-finished-making-ecotec-header/248406/10 "2009-11-17T08:56:16Z")
how big are the primaries, 1 7/8" ?
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### Author:  [@edubs](https://forums.speedlife.net/u/edubs)
#### Post date: [November 17, 2009, 2:14pm UTC](https://forums.speedlife.net/t/friend-just-finished-making-ecotec-header/248406/11 "2009-11-17T14:14:00Z")
> [@New Show on SpeedTV: Forza Motorsports Showdown](https://forums.speedlife.net/t/new-show-on-speedtv-forza-motorsports-showdown/21718/29):
>
> Just pointing it out for you that’s all. You can see the oxide “sugaring” on the inside welds, especially in the collector.
You were right. He forgot to turn on the gas when he was welding the primaries to the collector.
What would you use, as opposed to a stamped collector? From what I have heard, this collector is proven very reliable and efficient with the “star merge thing” (my technical description, lol).
> [@The MOST 'JDM' Car?](https://forums.speedlife.net/t/the-most-jdm-car/25923/35):
>
> Hey, edubs.
>
> Do you know what does your friend’s header design base on in terms of calculations (header diameter, length and outlet sizing); and what kind of reference does he use for the such design and calculations? Does he know any good books on this subject besides “The Scientific Design of Exhaust and Intake Systems” by smith/morrison?
>
> Thanks.
I can ask him. I know he worked with one of the world leaders in fluid dynamics for quite a few years and learned a lot from him. He definitely takes many things into consideration when he builds these. This header is almost perfectly equal length, with the exception of primary #3 (iirc) because of the way it had to run to fit correctly.
> [@12 Hour Sebring 2007 Thread](https://forums.speedlife.net/t/12-hour-sebring-2007-thread/25944/2):
>
> Nice work BTW OP.
Thanks!
No biggie on high-jacking the thread, boxer seems to have a good amount of knowledge of this stuff and that’s what we’re here for.
> [@Newman's 1986 BMW 326rb build thread.](https://forums.speedlife.net/t/newmans-1986-bmw-326rb-build-thread/22123/799):
>
> how big are the primaries, 1 7/8" ?
Dead on. 2" OD, 1-7/8" ID. Length is 14” and the collector is 6” long 2” prim to 3” DP…
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### Author:  [@Hank1](https://forums.speedlife.net/u/Hank1)
#### Post date: [November 17, 2009, 3:31pm UTC](https://forums.speedlife.net/t/friend-just-finished-making-ecotec-header/248406/12 "2009-11-17T15:31:59Z")
Yeah I can tell it was not back purged too !! Cause my name is Clark Kent and I got X-ray vision too see the inside of the tubes !!! lol
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### Author:  [@Hank1](https://forums.speedlife.net/u/Hank1)
#### Post date: [November 17, 2009, 3:32pm UTC](https://forums.speedlife.net/t/friend-just-finished-making-ecotec-header/248406/13 "2009-11-17T15:32:56Z")
I’m sure that post will get removed too !! Just like the last one !!! Bitches !!!
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### Author:  [@JVG](https://forums.speedlife.net/u/JVG)
#### Post date: [November 17, 2009, 4:00pm UTC](https://forums.speedlife.net/t/friend-just-finished-making-ecotec-header/248406/14 "2009-11-17T16:00:44Z")
> [@OFFICIAL Buffalo Sabres Thread](https://forums.speedlife.net/t/official-buffalo-sabres-thread/25170/3533):
>
> You were right. He forgot to turn on the gas when he was welding the primaries to the collector.
>
> What would you use, as opposed to a stamped collector? From what I have heard, this collector is proven very reliable and efficient with the “star merge thing” (my technical description, lol).
Been there before on the closed tank valve before :lol
Nothing really wrong with stamped collectors, they are just general pieces without any parameters really taken into account. A fabricated collector with a tuned spigot length, convergence angles, and a tuned mega phone are where you’ll make the power.
again though, not bad for a budget header 🙂
KrazyKid…backpurging is just as it sounds, purging the nitrogen/o2 from the primaries and filling with shielding gas(argon, helium, xenon, etc). If you cannot back purge the part you can use a flux(I like Solar Flux type B)
Most stuff like this I just put into my welding chamber and fill with argon or helium(for titanium) as it ensures a complete purge.
**----\> Adam(boxersix) on JVG's computer\<----**
.
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### Author:  [@crazybrew609](https://forums.speedlife.net/u/crazybrew609)
#### Post date: [November 17, 2009, 5:27pm UTC](https://forums.speedlife.net/t/friend-just-finished-making-ecotec-header/248406/15 "2009-11-17T17:27:16Z")
lol i got really scared that jvg actually knew this until i read it was adam
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### Author:  [@edubs](https://forums.speedlife.net/u/edubs)
#### Post date: [November 17, 2009, 5:57pm UTC](https://forums.speedlife.net/t/friend-just-finished-making-ecotec-header/248406/16 "2009-11-17T17:57:26Z")
> [@whats you fav. fish fry place?](https://forums.speedlife.net/t/whats-you-fav-fish-fry-place/25962/22):
>
> Yeah I can tell it was not back purged too !! Cause my name is Clark Kent and I got X-ray vision too see the inside of the tubes !!! lol
I pulled the picture of the inside of the collector because it not being back-purged was a mistake…
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### Author:  [@edubs](https://forums.speedlife.net/u/edubs)
#### Post date: [November 17, 2009, 5:58pm UTC](https://forums.speedlife.net/t/friend-just-finished-making-ecotec-header/248406/17 "2009-11-17T17:58:33Z")
> [@What Bluetooth Headset to get?](https://forums.speedlife.net/t/what-bluetooth-headset-to-get/25939/5):
>
> Been there before on the closed tank valve before :lol
>
> Nothing really wrong with stamped collectors, they are just general pieces without any parameters really taken into account. A fabricated collector with a tuned spigot length, convergence angles, and a tuned mega phone are where you’ll make the power.
>
> again though, not bad for a budget header 🙂
>
> KrazyKid…backpurging is just as it sounds, purging the nitrogen/o2 from the primaries and filling with shielding gas(argon, helium, xenon, etc). If you cannot back purge the part you can use a flux(I like Solar Flux type B)
>
> Most stuff like this I just put into my welding chamber and fill with argon or helium(for titanium) as it ensures a complete purge.
>
> **----\> Adam(boxersix) on JVG's computer\<----**
>
> .
Gotchya, lol. Thanks for the input!
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### Author:  [@Hank1](https://forums.speedlife.net/u/Hank1)
#### Post date: [November 17, 2009, 7:36pm UTC](https://forums.speedlife.net/t/friend-just-finished-making-ecotec-header/248406/18 "2009-11-17T19:36:55Z")
> [@Family Guy](https://forums.speedlife.net/t/family-guy/24750/47):
>
> I pulled the picture of the inside of the collector because it not being back-purged was a mistake…
I was just being an ass either way and trying to rustle some feathers !!!:ohnoes
Didn’t really care either way yes I know i sound like an ass but I still don’t care!!!:hug
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### Author:  [@justin2386](https://forums.speedlife.net/u/justin2386)
#### Post date: [November 17, 2009, 10:26pm UTC](https://forums.speedlife.net/t/friend-just-finished-making-ecotec-header/248406/19 "2009-11-17T22:26:17Z")
sweet stuff…im going to need a header made soon…the one on my geo is junk…it has very poor scavenging characteristics…but what would you expect from a pacesetter…and btw it was on the car when i bought it…so not my fault…lol
anyways…you know about how much this bad boy costs? (for reference/ballpark figures)
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### Author:  [@edubs](https://forums.speedlife.net/u/edubs)
#### Post date: [November 18, 2009, 6:14am UTC](https://forums.speedlife.net/t/friend-just-finished-making-ecotec-header/248406/20 "2009-11-18T06:14:39Z")
> [@FS: Midway Arcade Game](https://forums.speedlife.net/t/fs-midway-arcade-game/25884/27):
>
> sweet stuff…im going to need a header made soon…the one on my geo is junk…it has very poor scavenging characteristics…but what would you expect from a pacesetter…and btw it was on the car when i bought it…so not my fault…lol
>
> anyways…you know about how much this bad boy costs? (for reference/ballpark figures)
It would depend on what size primaries and collector you want. He only uses T304 for flange and all, so it definitely wouldn’t be cheap compared to those mild steel pieces. I could look into what his price would be for ya; though, on one that wasn’t just a first-build/test-piece…
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