Dual Turbo (help)
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From: Miami, FL
Dual Turbo (help)
I have a question about dual turbos. I know that turbos work off of the exhaust and my friend says that for a dual turbo you need a dual exhaust. It makes sense but how could I set up a dual turbo on my tC? I saw an xA that had dual exhaust on a DVD. Do I need to do engine work or just attach another exhaust to the existing one on the tC?
-ps- Please don't link this to that other dual exhaust thread. They are talking about the exhaust itself. I just want to know how to set it up for a twin turbo, if possible. Plus they are going on a "ricer" war. :?
-ps- Please don't link this to that other dual exhaust thread. They are talking about the exhaust itself. I just want to know how to set it up for a twin turbo, if possible. Plus they are going on a "ricer" war. :?
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Scinergy
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You do not need dual exhaust to run dual turbos. I'm no genius and I've never seen a manifold from a Surpa TT or Skyline GT-R, both are bi-turbo'd but they are both inline 6 cyl. engines so they should only have 1 exh. manifold, but the manifold might be split for each turbo.
All it takes to make "dual" exhaust like on the xA you saw is a y-pipe to split the single exhaust into two pipes.
My question is why would you twin turbo a tC? :? I guess if you've got the money then knock yourself out, but to me it just seems like an awful lot of work.
Also, if you're on here asking how to put 2 turbos on your tC, the odds are you don't have any idea what you're talking about. Turbos are not something that you slap on and you're done. There is a TON of other variables that need to be worked on to get it running right so you don't grenade your motor. If you are truly interested in a twin turbo tC, I'd take it to a reputable shop and hand over your credit cardS and keys and call them back in a few months
.
All it takes to make "dual" exhaust like on the xA you saw is a y-pipe to split the single exhaust into two pipes.
My question is why would you twin turbo a tC? :? I guess if you've got the money then knock yourself out, but to me it just seems like an awful lot of work.
Also, if you're on here asking how to put 2 turbos on your tC, the odds are you don't have any idea what you're talking about. Turbos are not something that you slap on and you're done. There is a TON of other variables that need to be worked on to get it running right so you don't grenade your motor. If you are truly interested in a twin turbo tC, I'd take it to a reputable shop and hand over your credit cardS and keys and call them back in a few months
.
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From: Miami, FL
I admit that I don't know as much about cars as a lot of people, mainly because I've only been interested for under a year. But I do know that you can't just add turbos and be done with it. I don't plan on turbos being my first, second, or third mod. I'm just thinking about, slowly, working my way up to it.
Anyway, thanks for the info. I probably won't end up going the way of a twin turbo. At most, I'll probably put on a sequential turbo.
Anyway, thanks for the info. I probably won't end up going the way of a twin turbo. At most, I'll probably put on a sequential turbo.
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Originally Posted by wOoOzZy
I probably won't end up going the way of a twin turbo. At most, I'll probably put on a sequencial turbo.
I'm not entirely sure but I think twin turbos will boost the same amount at the same time...2 smaller turbos instead of 1 larger. Giving you same power with less lag whereas sequential turbos will have 1 that spools quicker so you get into boot earlier. But this is merley speculation on my part, I could be totally wrong about the twin vs. sequential deal. They might be the EXACT same thing just two different names. :?
Anybody else care to chime in?
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In this case it would be a big waste of money. Just match a turbo of the right CFM & your good to go. If you are still bent on twin turbo then this is what I would say. Just as a warning I have never learned how a twin turbo system works, so this is just going to be how I think it does.
You have a custom exhaust manifold made that will dump into your first turbo. Make sure this turbo is smaller then the second, so you get less lag & boost down low. Now you take the exhaust running from the first tubo & pump it into the second, larger turbo. So now you have 2 turbos, of different sizes for different engine ranges & power. The first turbo will reach full boost fast & down low & the second one would kick in higher in the range & offer more boost. In this case I think the 2 boosts add to each other so limit the first turbo to around 4psi & the second on 4-6psi for a total of 10psi @ max boost. This is just my idea on how something like this might work so everything I just typed could not even be close to how it would really need to be.
You have a custom exhaust manifold made that will dump into your first turbo. Make sure this turbo is smaller then the second, so you get less lag & boost down low. Now you take the exhaust running from the first tubo & pump it into the second, larger turbo. So now you have 2 turbos, of different sizes for different engine ranges & power. The first turbo will reach full boost fast & down low & the second one would kick in higher in the range & offer more boost. In this case I think the 2 boosts add to each other so limit the first turbo to around 4psi & the second on 4-6psi for a total of 10psi @ max boost. This is just my idea on how something like this might work so everything I just typed could not even be close to how it would really need to be.
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Yeah, I've dropped the twin idea. I know how a sequential works though. It's the same as a single turbo but without the lag.
Stage1 = low rpms spool up smaller turbine in the turbo.
Stage2 = while smaller turbine runs the larger one starts up.
Stage3 = once the small turbo hits a certain rpm it shuts off and the larger one takes over.
It's basicaly a single turbo with two turbines; one big, one small. It's more efficient as far as I can tell.
Stage1 = low rpms spool up smaller turbine in the turbo.
Stage2 = while smaller turbine runs the larger one starts up.
Stage3 = once the small turbo hits a certain rpm it shuts off and the larger one takes over.
It's basicaly a single turbo with two turbines; one big, one small. It's more efficient as far as I can tell.
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From: FL
Originally Posted by wOoOzZy
Yeah, I've dropped the twin idea. I know how a sequential works though. It's the same as a single turbo but without the lag.
Stage1 = low rpms spool up smaller turbine in the turbo.
Stage2 = while smaller turbine runs the larger one starts up.
Stage3 = once the small turbo hits a certain rpm it shuts off and the larger one takes over.
It's basicaly a single turbo with two turbines; one big, one small. It's more efficient as far as I can tell.
Stage1 = low rpms spool up smaller turbine in the turbo.
Stage2 = while smaller turbine runs the larger one starts up.
Stage3 = once the small turbo hits a certain rpm it shuts off and the larger one takes over.
It's basicaly a single turbo with two turbines; one big, one small. It's more efficient as far as I can tell.
The mkiv Toyota Supra has a sequential turbo setup. What this means is that the #1 turbo (the one at the front of the engine) initially receives all the exhaust gas from the engine. Because its receiving all the exhaust gas, the turbo spools up very quickly and one can be getting boost from 1800rpm (or less). This makes the car feel like a NA 4.0L car when just cruising around town, which feels really great. When you put the "pedal to the metal" the #2 turbo will also come on line. How this works is that at about 3500rpm, the #2 turbo is pre-spooled by a small amount of exhaust gas being transmitted through it by opening the "exhaust bypass valve". This spins the turbo up to speed but doesn't produce any boost at this point. At about 4000rpm, the "exhaust gas control valve" opens which then allows full exhaust flow through the #2 turbo (as well as the #1 turbo). The #2 turbo then immediately starts producing boost. As soon as this boost pressure equals that of the #1 turbo, the "intake air control valve" opens which lets this boost join the intake airstream and you now have two turbos both on-line. The sudden influx of boosted air from the #2 turbo (gives a big power surge) makes it feel like the #2 turbo is a bigger turbo (it isn't, they are both the same size) but its just because the #2 turbo suddenly comes on-line.
In other words, the first turbo doesn't go off-line when the second one comes on..
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I'd drop the sequential turbo idea as well. It'll cost more money than you really need to spend. Not to mention all the controlling mechanisms for the second turbo (possible failure or improper setup may cause for your motor to eat it) and tuning the sob. A properly sized single turbo will be enough for what you need it to do without dramatic amounts of lag. Just make sure you take it to a reputable shop and have the work done correctly. 8-9 psi shouldn't be too hard to accomplish. Just don't get suckered into buying a turbo too big for your applications. That's one of the main problems with early turbocharging. Most people put in turbos in which they did not even use 50% of it's full capacity. I think this way you'll be happier with much less headache.
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just drop the entire idea. bang for buck... f/i by means of turbo or supercharger isnt practical.
but if you must..
run a t25, with an intercooler.
get some 250 or 300cc (you can even probably get away with 400-450 just need to lean that _____ out a lot) injectors, RC makes some that are compatible with out cars...
then its your choice as far as what you want to do. you can get an SAFC and lean the car out that way.. or you can get a stand alone be able to control more.. ie timing and what not...
tune the car yourself with a datalogger or a wideband.
there you go 3000+ for 50 WHP
please dont ask me any questions about the above. you want some information about turbos, and turbo setups etc. please visit this website..
www.google.com
**please do research before posting!!**
**don't forget to SEARCH **
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