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Old 09-27-2006, 10:04 PM   #1 (permalink)
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turbo manifold

ok i didnt put this in shitchat, cause not everyone goes over there. i know there are some talented individuals here that are way more skilled than i when it comes to this. im looking at buying a SS tubular manifold and i was wondering what it would run to make a turbo manifold that looked somewhat like these:



and what price would you pay for these manifolds?


there is also a somewhat log style cast one that i have also been looking at.

do you know the diffrences good or bad on cast iron vs tubular? this is the first i have gotten into turbos, especially custom, so im a little newb at the game of hairdriers.



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Old 09-27-2006, 10:28 PM   #2 (permalink)
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The guys around here that build custom headers told me 100.00 a tube is the going rate... i imagine that SS would be a bit more...


is this for one of your projects or customer or ????

what engine??

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Old 09-27-2006, 10:30 PM   #3 (permalink)
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secret project

S52 engine.

dont worry, i was working on teh cruiser today. things are coming along
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Old 09-27-2006, 10:36 PM   #4 (permalink)
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so how much more? and does this include the flanges? like as in, this is a 6 cylinder, so 600 bucks? i can have people lined around the block for that price.... tell me more
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Old 09-27-2006, 11:34 PM   #5 (permalink)
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Those first tubular headers you have pictured are a pretty shitty design for sure...but I don't know what they're going into and sometimes lack of space takes precidence over performance. Depending on how much HORSEPOWERS you're wanting to make, you can go with the cast log, tubular log, or full on tubular header. Benefits over a well made log manif are still debated, but from all the charts I've seen they look to build lower end power then choke off the top end as compared to a good set of headers.

Anyway, $600 is too much for a single manifold. Build your own...it's fucking simple and you can do it with even a 110v welder. Cheap bends on ebay then send it to get ceramic coated or you could use weld L's either way, you still come out cheaper than what someone will sell them for...they're beamer parts mang, everything is overpriced.

Anyway, I found these that someone built. Better than the previous pics but the wg exit is still in a horrible place.

Good luck shitbag
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Old 09-27-2006, 11:51 PM   #6 (permalink)
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how fast and does it need to be pretty , some shorty header on a 302 at
turbo mustang make big power , too high psi shows what can be done
on a buget. Burns stainless make great parts for diy big $$$$ , take a look
at those sites mite give you some dreams
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Old 09-27-2006, 11:54 PM   #7 (permalink)
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What motor would you be looking to turbo, and what are your goals... like everything else the manifold has to be designed well for the application. As stated above the wastegate location on both those manifolds is terrible. It should be in a spot so that it is even across all the cylinders. Sometimes for ease it is worth it to run an internal wastegate. Unless you are looking for high boost applications
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Old 09-27-2006, 11:57 PM   #8 (permalink)
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Quote:
Originally Posted by braxton357
Those first tubular headers you have pictured are a pretty shitty design for sure...
What do you see wrong with the design?


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Good luck shitbag
^ what was that about?
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Old 09-28-2006, 12:00 AM   #9 (permalink)
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Quote:
Originally Posted by patford
how fast and does it need to be pretty , some shorty header on a 302 at
turbo mustang make big power , too high psi shows what can be done
on a buget. Burns stainless make great parts for diy big $$$$ , take a look
at those sites mite give you some dreams
X2 on the Burns Stainless... we have put their collector mufflers on several cars in the last couple of months... they are works of art.. But like patford said.. $$$$$
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Old 09-28-2006, 12:02 AM   #10 (permalink)
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Quote:
What do you see wrong with the design?

Honestly, it's one of the uglier merges I've ever seen (though nice welding) and the wastegate dump is in a pretty useless place. It's really hard to control your boost level like that. Like I said though, sometimes you have to sacrifice power for functionality.

Maybe I should have added a to the shitbag...
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Last edited by braxton357; 09-28-2006 at 12:03 AM.
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Old 09-28-2006, 12:07 AM   #11 (permalink)
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Yeah.. nice welds for sure.. but i dont think ive ever seen anything crammed together like that at the flange. Not sure how he got in there to fully weld the inside seams.

What is the reason for running all the tubes direct to the turbo flange instead of running the tubes off of the cyl head 2 into 1 , then having only 3 tubes going to the flange?
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Old 09-28-2006, 12:17 AM   #12 (permalink)
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The merge of this manifold is terrible because you have cylinders opposing eachother, it will be extremely turbulent thus not have a high exaust velocity.



You would need more views of this manifold this appears to be the best design so far. Although the runners are all different lengths, If you were to make a merge similar to that and make all your tubes equal length I think you would be in good shape.

Check out the design on this one...
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Old 09-28-2006, 12:24 AM   #13 (permalink)
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^That's pretty much correct. Ideally you would want them to work just like a normal long tube header...merge cleanly into one tube, then into the hotside flange.
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Old 09-28-2006, 07:29 AM   #14 (permalink)
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^ what was that about?

braxton and i share a special bonding, kinda like the clap and a whore
its all in fun i think



ok well lets talk some pricing. the above manifolds are supposidly the "best" on the market for the buck.

there is also this cheap peice of shit on ebay that i was thinking, but i dont like the design, since the front 3 cylinders are crowded into one pipe and the back 3 have their own pipes.





this cast manifold seems to be in the lead in my choice. it seems to be the most heavy duty, i know cast retains teh heat better, and it seems to merge all exhaust flows better too.

comments?

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Old 09-28-2006, 02:59 PM   #15 (permalink)
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so.... like..... anyone else?
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Old 09-28-2006, 03:23 PM   #16 (permalink)
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nothing to comment except this:


Is pure fucking art and has no business anywhere but at the center of a dinner table loaded with fine china and expensive hookers
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Old 09-28-2006, 05:47 PM   #17 (permalink)
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nothing to comment except this:


Is pure fucking art and has no business anywhere but at the center of a dinner table loaded with fine china and expensive hookers
How ironic. I know these guys and was at the track with them over a week ago.
One of the shop guys was beating on his turd Teg with a new Turbo setup. It only ran a 11.18 at 134 MPH. Later in the week it ran a 10.80 at 140.
You should see the Skyline.
I guess I could go by and get pics.

They just built a TT manifold for the Cummins and it is really nice too. That is actually running and still being developed.
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Old 09-28-2006, 06:01 PM   #18 (permalink)
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phew! 140 ET? you sure that is right? shouldnt that be in the 9's then easy?


so what the fawk, they gonna build my shit or what?

also no one has guessed what prices those above manifolds go for either
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Old 09-28-2006, 07:28 PM   #19 (permalink)
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Here is one I made for a skyline, its just tacked up in the photos. I dont know if I would do it again for 100$ a tube.. I make 4cly headers for 450$ but the 6 in a PITA I think more along the lines of 750$




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Old 09-28-2006, 07:31 PM   #20 (permalink)
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phew! 140 ET? you sure that is right? shouldnt that be in the 9's then easy?

turbo cars get crazy MPH especially FWD cars
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Old 09-28-2006, 08:35 PM   #21 (permalink)
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k well the first manifold that i put up goes for about 900, the real nice second one goes for about 1300 and the cast one goes for 290. the cheap ebay one goes for 200.
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Old 09-28-2006, 09:44 PM   #22 (permalink)
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My budget would take cast for 290.00

Looks like a fun project none the less... Im getting ready to build a new header for the 2f in my cruiser (to clear the Eaton SC that will hang under the hand made intake manifold)

Update your cruiser build BTW.... Its kinda quiet tech wise in the cruiser forum lately...


chris
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Old 09-28-2006, 09:48 PM   #23 (permalink)
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$100 dollars a tube would be a bargain for custom headers.
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Old 09-28-2006, 09:49 PM   #24 (permalink)
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How much HP are you looking for? The cast one will not hold you back untill around 400whp.

I know a good amount about turbo setups, I lost count of how many cars I have turboed. I know i did about 6 cars this summer... and a ton of parts.

I also have a 240SX that runs 10.9 @ 126mph
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Old 09-28-2006, 10:08 PM   #25 (permalink)
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built one for a chevy inline 6 in a nova, lots of calculations went into the design,equal length runners and it ran beautifully. The money going to the header matters especially for longevity, different cylinder pressures and heat are bad. The design of headers is complex the bmw one is a thrown together design to work, with low boost it should be ok. I spent 350 on tubing to make the header work on the nova to clear everything and do equal lenght but i have access to a laser to make the flanges. For a well built turbo header 900-1300 isn't bad and it's worth it in the long run. If you need some design clues i can help out somewhat pm me
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