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Old 08-23-2006, 08:46 PM   #1
natefrank
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Default H6 Twin Turbo Wrx Sti

Hello my name is nate im 23 years old and have been wanting a subaru since i was 17 i saw a article in a tuner magazine about a 6 cylender turbo sti I am looking to do the same but with twin turbos,im not really sure how to go about it. money is not an issue all i want to know is where to go and what to do . I dont want people telling pe what i should I know what i want to do and thats what i will do so if u have suggestions about just buying an sti and modifing the hell out of it ,I dont care ,i know what i want to do and i will do it .I have been on other forums and people suggest everything BUT what i want to do and what i started the thread for .Im not trying to be mean or anything ,I just know what i want.

thankyou,

nate
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Old 08-23-2006, 08:47 PM   #2
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Old 08-23-2006, 08:49 PM   #3
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You should ask the guys in Off-Topic, there are a few guys there who have done this already.
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Old 08-23-2006, 09:00 PM   #4
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Where are you located? Since you've got the cash, there could be a good shop nearby that's willing to take on such a project.
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Old 08-23-2006, 09:00 PM   #5
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If you are serious about this, you need to call one of the many big builders in the united states and send them a check. A large one.
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Old 08-23-2006, 09:07 PM   #6
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some one has a small p....
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Old 08-23-2006, 09:09 PM   #7
RP31
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pinky?
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Old 08-23-2006, 09:10 PM   #8
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The guys at Perrin and PDX might be the ones to talk to about this... IIRC they already have a turbocharged H6 in an STi. I THINK it runs a single turbo though, but i am sure they could advise you
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Old 08-23-2006, 09:34 PM   #9
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Cobb supercharged an H6...

http://cobbtuning.com/cobbtuned/ct_tribeca.html

I know that's not a twin turbo STi, but probably a similar project.
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Old 08-23-2006, 09:36 PM   #10
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Quote:
Originally Posted by natefrank
i saw a article in a tuner magazine about a 6 cylender turbo sti I am looking to do the same but with twin turbos...
Hi Nate,

So far the folks have been pretty gentle on you, but the "Off Topic" reference was sort of implying that your questions has the potential to bring down a ton of responses that will basically ridicule you.

One reason is that wanting to put a twin-turbo H6 motor in an STi makes absolutely no kind of sense. And yet...as mentioned above, it has already been done. (Okay, yeah, it's a single-turbo, but still...) So, don't let that stop you. Just because it's a huge waste of money, and just because there's absolutely no rational reason for doing it, doesn't mean you shouldn't do it. Follow your dream, and all that.

Another reason is that you're obviously starting from a point where you don't have a whole lot of knowledge. The internet can smell ignorance and will pounce on it like jackals. Don't let that stop you either, but do yourself and others the favor of learning AS MUCH AS YOU CAN. Read everything you can on this subject, and anything related. Study up. Then your questions here will be more informed and you'll have a better chance of getting a straight answer.

I'll tell you that this project will be insanely difficult to complete, and incredibly frustrating, and far more expensive than you expect. Some pretty crazy stuff has come through our shop (we always seem to be patching up other people's blow-ups) and most of the really ambitious projects (twin turbo setup on your Hyundai Tiburon? Custom T3/T4 for your Volvo S60R?) I've seen have not worked right the first time. Or the second time. Or sometimes a year later. Or two years later.

In order to have the hope of completing this, you'll either have to become a complete expert on turbocharging and electronic fuel injection, or you'll need to hire an expert. And hiring somebody will be difficult, because a.) a lot of people will CLAIM to be able to tackle something like this, but won't really be able to, and b.) the few who ARE able to handle it will be reluctant to take the job. They'll be reluctant because such a major project requires a lot of trust on the part of both vendor and customer, and if the relationship isn't very trusting, things can go very sour. The customer can bail out part-way through, for example, leaving the vendor holding a bunch of expensive, yet un-sellable, hardware...As a vendor, taking on such a major project is a substantial risk, of reputation, if not of dollars.

My first step, as Jigga mentioned, would be contact the people that have already done this swap. Start from there. Will they take on the job? If not, can they recommend someone who could/would?

I'm sure some people will pipe up and say that this shouldn't be that hard, and that (based on the parts list from the other thread) it won't be very expensive. And judging from the huge number of cars that are driving around with H6 implants...oh no, wait, there's only one that I know of that runs. So anyway, if you do complete it, let us know what it cost you.

Good luck!

--Dan
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Old 08-23-2006, 09:51 PM   #11
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Quote:
Originally Posted by Mach V Dan
Hi Nate,

So far the folks have been pretty gentle on you, but the "Off Topic" reference was sort of implying that your questions has the potential to bring down a ton of responses that will basically ridicule you.

One reason is that wanting to put a twin-turbo H6 motor in an STi makes absolutely no kind of sense. And yet...as mentioned above, it has already been done. (Okay, yeah, it's a single-turbo, but still...) So, don't let that stop you. Just because it's a huge waste of money, and just because there's absolutely no rational reason for doing it, doesn't mean you shouldn't do it. Follow your dream, and all that.

Another reason is that you're obviously starting from a point where you don't have a whole lot of knowledge. The internet can smell ignorance and will pounce on it like jackals. Don't let that stop you either, but do yourself and others the favor of learning AS MUCH AS YOU CAN. Read everything you can on this subject, and anything related. Study up. Then your questions here will be more informed and you'll have a better chance of getting a straight answer.

I'll tell you that this project will be insanely difficult to complete, and incredibly frustrating, and far more expensive than you expect. Some pretty crazy stuff has come through our shop (we always seem to be patching up other people's blow-ups) and most of the really ambitious projects (twin turbo setup on your Hyundai Tiburon? Custom T3/T4 for your Volvo S60R?) I've seen have not worked right the first time. Or the second time. Or sometimes a year later. Or two years later.

In order to have the hope of completing this, you'll either have to become a complete expert on turbocharging and electronic fuel injection, or you'll need to hire an expert. And hiring somebody will be difficult, because a.) a lot of people will CLAIM to be able to tackle something like this, but won't really be able to, and b.) the few who ARE able to handle it will be reluctant to take the job. They'll be reluctant because such a major project requires a lot of trust on the part of both vendor and customer, and if the relationship isn't very trusting, things can go very sour. The customer can bail out part-way through, for example, leaving the vendor holding a bunch of expensive, yet un-sellable, hardware...As a vendor, taking on such a major project is a substantial risk, of reputation, if not of dollars.

My first step, as Jigga mentioned, would be contact the people that have already done this swap. Start from there. Will they take on the job? If not, can they recommend someone who could/would?

I'm sure some people will pipe up and say that this shouldn't be that hard, and that (based on the parts list from the other thread) it won't be very expensive. And judging from the huge number of cars that are driving around with H6 implants...oh no, wait, there's only one that I know of that runs. So anyway, if you do complete it, let us know what it cost you.

Good luck!

--Dan
Mach V
FastWRX.com
My parts list or the the other Bens part list?

To the OP.

You're 23, money IS an object.

If you have not already you should pay off your car, next take the money from this project and put a downpayment on a house. If you already own a house (as in own the house, no mortgage etc..) set the $$$ aside for a wedding (unless you are gay or already married, trust me a wedding can get $$$ very fast)
If you own the car, a house and are already married just use the money for the project and put down a sizeable deposit on an exotic, be it a Ferrari, Lamborghini, Ford GT etc.....
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Old 08-23-2006, 09:59 PM   #12
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Check out the Legacy Forum if you're the Do-it-Yourselfer, and find "PHATsuby's crazy new Project"

Twin Turbo EZ30R (H6)

But I agree with Hondaslayer, you should look into other, more important (yes, more important than having a sweet car, I know!) things
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Old 08-23-2006, 10:01 PM   #13
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IBTroll
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Old 08-23-2006, 10:05 PM   #14
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Theres a thread somewhere about 1000whp and if it's possible. It started with a built H6 and bigarse turbo, and about $60,000s TO START. Good luck. I'd love to see it done. I'm 24 and would be insanely jealous of a person my age with the means to get this accomplished.
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Old 08-23-2006, 10:06 PM   #15
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Mach V Dan, Best post ever to a n00blet.
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Old 08-23-2006, 10:06 PM   #16
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First thing you should do is find where your freakin period key went and put it back on your keyboard. Use it.
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Old 08-23-2006, 10:09 PM   #17
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Quote:
Originally Posted by iamchris
First thing you should do is find where your freakin period key went and put it back on your keyboard. Use it.
/\ /\

This n00b just joined my cool people list
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Old 08-23-2006, 10:09 PM   #18
RP31
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There are five, that's like 66%.
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Old 08-23-2006, 11:53 PM   #19
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The only one that I know of that runs, to my knowledge.....is Jeff (is that right?) Perrin's. And it made pretty weak power on the setup that he had from what I remember.
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Old 08-24-2006, 12:02 AM   #20
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awe let the kid blow up two or three engines he will learn....... slowly
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Old 08-24-2006, 12:29 AM   #21
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I love these highly hypothetical threads where people talk about the way-out ideas that don't make monetary sense. Then again, nothing about modifying a car makes much monetary sense. So, play on, I guess...

A few questions for you natefrank:

1. Do you plan on doing this with an STi, or just putting a twin h6 into a suby? I ask because with the likelihood that this endeavor will easily eat up a 20K+ once the labor is involved (not including the car or any peripheral mods such as tranny, suspension, etc), there is a big cost savings if you can cram all the parts into a $2K 96L or some such.

2. What is your intended use for this car? Do you hope to use it at the drap strip, as a street car, as a track car, etc?

3. What end result do you expect to get out of the car?

I ask these last two questions because your initial post seems to be abounding in gusto, but lacking in a justification for the project. I am not trying to shoot you down, only to ask if you've considered what exactly is the point for building an twin turbo H6. Perrin made their single turbo h6 mostly to show off what they could do. Which is something that shops with a lot of money have the luxury of doing sometimes. But the whole car is a tax write-off, and usually recoups at least some of the cost by being a testbed for parts and by gaining popularity as a must-see piece of brilliant advertising.

But I assume you're not going to be building this car to show off your very lucrative tuning shop. If you were, you wouldn't be on here asking us this question. And while the aftermarket auto industry has make a pretty penny off of those in dire need of internet bragging rights, I'm going to hope and assume you've got a more legitimate purpose for this crazy engine plan.

As such, I'm going to give you a little food for thought...

First, the impreza chassis can be firmed up and made into a fairly competent track car. But, it'll still never be very aerodynamic or well balanced. I think the weight distribution is something like 60/40 front/rear. Adding a bigger, heavier engine, as well as a lot of heavy metal exhaust plumbing, huge intercoolers and twin turbos is not going to just add unneeded weight to the car, but also throw off the car's already front-biased weight distribution, thereby giving the car two more major handling disadvantages (distribution and weight).

If your aim is to build a better drag car, i think twin turbos would be a bad idea. Most often the fastest 1/4 mile turbo engines run one massive turbo that spools up late but give a lot of boost on the upper half of the rev range. Since you're launching from a high RPM, this is understandable, but sort of defeats the need for the extra complexity and weight of a twin turbo setup.

If you're planning on using your car to get you on the cover of car magazines...well, yeah, a twin turbo h6 in an impreza might do that. But if you're trying to build an actual every day fun to drive car, you need to play to Subaru's strengths: the well-designed chassis that, with the right suspension mods, can become a formidible car in the twisties, a stout 4 cylinder engine that responds well to boost (something a stock H6 does not), a respectable redline (8250 in some JDM STi models vs. 6K in the H6), one of the best AWD systems in the game, and a huge proven aftermarket community.

I'm not saying don't build the h6tt. I'm just suggesting that you know exactly what it is you hope to attain by building it. Because an h6tt doesn't necessarily mean faster, it doesn't necessarily mean better. All it really means is more expensive.
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Old 08-24-2006, 12:39 AM   #22
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Quote:
Originally Posted by iamchris
First thing you should do is find where your freakin period key went and put it back on your keyboard. Use it.

^^^Zoiks, Scoob!^^^ Like that's pretty harsh, cough-cough.


Aside from that, if money is TRULY no object, can I have your old STi motor?

I want to put it into (get this) a BMW 635csi chassis.

That'll be worthy of more flames than your 6cyl STi.

SOTC
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Old 08-24-2006, 01:08 AM   #23
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I know that All Aspects has gone done the impossible. You should contact them and sign your soul to them.
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Old 08-24-2006, 03:22 AM   #24
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[/quote]You're 23, money IS an object.

If you have not already you should pay off your car, next take the money from this project and put a downpayment on a house. If you already own a house (as in own the house, no mortgage etc..) set the $$$ aside for a wedding (unless you are gay or already married, trust me a wedding can get $$$ very fast)
If you own the car, a house and are already married just use the money for the project and put down a sizeable deposit on an exotic, be it a Ferrari, Lamborghini, Ford GT etc.....[/quote]

Listen I totally understand where your coming from,I have heard all of this from my parents , grand parents, Aunts,uncles,cousins and people off the street. I have the money put away for evrythng you just mentioned and more. I have the exotic ,but where i live an exotic isnt very exclusive you can go to any exotic car dealer wave a couple hundred G's around and have evryone at your beck and call. i want a car that no one has, that it is just me .I know i can go blow 1.2 mill on a bugatti and still be exclusive , Id rather give it to a charity.i know i'm going to spend some where around 70 mabe 80k but i will be the only one with it. ok to clear some stuff up I am in no way gay, money really is no object,my house is paid off , and all my cars are too (i dont like being in any kind of debt, or even having to think about making any paymentsI dont need to) Im not here to make any one mad all i want is some info
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Old 08-24-2006, 03:38 AM   #25
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GTFO. if you're that rich call up PDX tuning, put down a 50k deposit and then let them do their thing.
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