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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 01-14-2010, 02:37 PM   #61
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alright so it looks like wayne_curr is going to be building me manifold soon but I found out the other day I need some damn pisons now and I can't find anyone that has them in stock and I'm not wanting to spend the money on forged ones cause then I'm gonna want to get rods then springs etc
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Old 01-14-2010, 02:49 PM   #62
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Hating on my sweet custom tricked out etd with tial mvs....haters hate.
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Old 01-14-2010, 02:51 PM   #63
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I'm not hating on anything. You have some nice pieces there he's just doing it cheaper
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Old 01-14-2010, 02:54 PM   #64
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custom manifold with tial ewg for cheaper? He must be doing it for free. I don't really care though, boost is fun no matter what mani you have.
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Old 01-14-2010, 02:57 PM   #65
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It's not going to be a tial. I'm going to try out one of the cxracing wastegates and I don't want to say anything about pricing. He can tell if he wants
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Old 01-14-2010, 03:33 PM   #66
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Because that's what everyone else uses?
They spend the big bucks in R&D. We copy them, not the other way around.

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Every now and then I consider making it, as well as a ramhorn manifold (which is easier to build)
Can't really say that if you've never built one. Build it, then decide. To me an Absurdflow looks easier to make, but I'd imagine there are things I'm not taking into consideration.

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I don't think it'd last long enough for my lifetime guarantee from cracks
There are thousands of ramhorns in circulation, doesn't seem to be a problem with the design. Poor construction may lead to broken manifolds but that applies to any design. In any case, the most common failure point is at the collector>turbo flange or the wastegate neck, neither of which are affected by long/short runners.

Tim, you'll never be out of work. You have a cult following. You're an innovator in the miata community. After all, who else has a TT miata

BTW, I'm not trying to start a pissing match. Each design has it's advantages. I too have thought about making a dyno comparison of the different designs, but 1) I'm not footing the entire bill, 2) The doubters will say it never happened, or somehow the numbers were skewed (just read the 10 pages of bickering on the link above for an example).
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Old 01-14-2010, 03:54 PM   #67
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They spend the big bucks in R&D. We copy them, not the other way around.
In my daily work I see a lot of people doing things because that's what everyone else does. A LOT of it makes no sense, or has been proven to be wrong by people who do their own R&D. I think there are very few race teams who actually do R&D on their turbo manifold design.

Top level N/A headers, that's another story.

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Can't really say that if you've never built one. Build it, then decide. To me an Absurdflow looks easier to make, but I'd imagine there are things I'm not taking into consideration.
If I were to build a ramhorn, I'd start at the collector which you can buy premade at a few different places. Each primary is then just a matter of connecting the collector pipe to the head flange. I'm pretty good by now at making straight/perpendicular-to-tangent segments and getting from point A to B. It is difficult to make long 3-d cuts in multiple pipes that all have to merge at one point. For me fitting is a PITA still and takes more brain power, patience, and skill than welding segments together.


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Tim, you'll never be out of work. You have a cult following. You're an innovator in the miata community. After all, who else has a TT miata
the last manifold I did was thesnowboarders a few months ago. I had 2 builds after that but both lost funding. Fortuantely I do not do this for income and I have lots of other personal projects to do

No one want's the TT's. Boooo. i'd really like to sell them so I'd have money for a suspension for the subaru hahaha

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BTW, I'm not trying to start a pissing match. Each design has it's advantages. I too have thought about making a dyno comparison of the different designs, but 1) I'm not footing the entire bill, 2) The doubters will say it never happened, or somehow the numbers were skewed (just read the 10 pages of bickering on the link above for an example).
I'm not trying to start smack either. I whole-heartedly agree.

Maybe I'll make Sav a ramhorn if he wants to try it.
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Old 01-14-2010, 04:38 PM   #68
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Maybe I'll make Sav a ramhorn if he wants to try it.
I'm sure Paul wouldn't mind trying either.
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Old 01-14-2010, 04:47 PM   #69
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Paul will try my sch. 10 stainless manifold. I want someone with a turbo large enough that may benefit from a ramhorn.
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Old 01-14-2010, 05:14 PM   #70
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Tom's not using his car....just borrow his setup for a whilez.

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Old 01-14-2010, 05:17 PM   #71
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ooooo pretty
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Old 01-14-2010, 10:17 PM   #72
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Yeah there ya go. Nice.
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Old 01-15-2010, 12:09 AM   #73
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I think there are very few race teams who actually do R&D on their turbo manifold design
I don't know about that. Everytime they go to the track it's a R&D session. Every season they change setups. Even if they don't actually have every part tested, they are using what's proven to work best to date, and I seariously doubt no one has though of just going with a simple header design with minimum bends.

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It is difficult to make long 3-d cuts in multiple pipes that all have to merge at one point
Agreed. After the first one though, you could make a template for future collectors so you don't have to start from scratch every time. Fitting is also a challange with a ramhorn, but also time consuming is playing with torch setups to reach tight spots (while maintaining good coverage). I don't see many hard to reach spots on an absurdflow.

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No one want's the TT's
Don't sell it. I would display in the shop

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I want someone with a turbo large enough that may benefit from a ramhorn
Hope Jason doesn't mind me posting this



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Old 01-15-2010, 01:11 AM   #74
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Nice spot for the power sterering But that's your car you use to mock up, right? Nice manifold. Looks simple

I don't have a shop. I display the TT's on the floor of my utility room. It's in the box next to the dog food. Don't trip over it.

Absurdflow mani's are very simple to weld. It's the cutting/fitting that takes time. I've found templates to be rather disappointing due to great variances in weld elbow cast size/shape. Not all are the same diameter or 1.900 OD, not all are 90 degree, etc. Mild is worse than stainless in that regard. I've tried to make templates from what I've done before but it's only a guestimate when it transfers over. I'm sure I'm missing something but whatever.

I don't change tips or diameter electrodes or whatever at all. I only have two electrodes, big for the mani's, small for the downpipes, whatever came with the welder has worked fine for the past few years. Still not using a glass lens. I'm a basic self taught welder. Lotza stuff is probably done wrong. I think using the steel electrode is much easier on aluminum than the 100% tungsten, so I use that instead.
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Old 01-15-2010, 02:10 AM   #75
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Abe,

My mani looks really good thanks for everything

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Old 01-15-2010, 09:02 AM   #76
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Hey Abe

Mani looks very nice. Where's the wastegate? is it going to be externally gated?

S,
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Old 01-15-2010, 11:48 AM   #77
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^^ Yes it is, he just hasn't finished it yet. External V-Band MVS 38MM. It's going to be ceramic coated as well.
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Old 01-15-2010, 02:30 PM   #78
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Lol yeah, I'm building off my car, and would like to keep everything together in case I ever get to drive it again (it's been sitting for almost 6mo now).

What about Shore MS? Will they let you put it up for display there?

I guess I haven't done enough carbon steel to notice the difference. I figured making the ballpark cut, then taking it to a belt to fine tune would be easy, but if the elbows vary that could be a problem. Do you buy from a single supplier? I requested that all my elbows come from the same mfg, or at least the same country. I wonder if that would solve the issue.

As for the electrode, you have some variation of tungsten. Ceriated, thoriated, lanthanated or pure. Steel would melt right off. I use 2% lanthanated for everything, but with these newer inverted machines it really doesn't matter as much as it would on a transformer welder.
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Old 01-18-2010, 12:48 PM   #79
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Originally Posted by wayne_curr View Post



How do you guys think this will perform against the FM/Begi cast mani's that a lot of us run?
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Old 01-18-2010, 12:55 PM   #80
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I'll be finding out soon enough. Wayne_curr is building me one and I'm switching from the tacotaco cast mani. I'm excited
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