Forced Induction Turbos/Superchargers

STS Turbo

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Old Dec 11, 2008 | 11:58 PM
  #26  
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Originally Posted by raptors_67
Do you realize the miniscule amount of flow efficiency differences there are when dealing with gases over a distance like this?! And people do extend there exhaust 3x times the normal length when on dyno's to vent the exhaust.... think it makes a huge difference in a dyno pull?

Let's talk about common sense then.... if there's such a huge difference in distance as you say would that not mean a cooler intake charge temperature? What about a cooler turbo since it's not placed under the hot engine bay? Ever wonder why STS kits can be installed without an IC?
Any turbo kit can be installed without an intercooler and run low boost #'s Intercooling just makes the process more efficient and makes it safer when upping the boost. STS systems are a joke and should only be used when there isn't enough room in the engine bay for a conventional system. Turbo's need heat to spool, this is why STS generally uses smaller turbo's than their competitors, to decrease spool time from the inherently slower spool form their system. Using a smaller turbocharger means less efficiency in the target range in MOST cases, if your competitors are using properly sized turbos. This means the turbo itself will generate more heat when pushing a given CFM. Even though it's in the rear ACT's are not going to be all that much lower. On top of that, when in a turbo's efficiency range, with proper cooling many times air charge temps are near ambient. You are not going to see major power gains from a few degrees lower air temps. You need massive temp changes for that. Conventional systems will spool faster with the same turbo and put out very similar air temps after intercooling, so where is the benefit of remote mount systems?
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Old Dec 13, 2008 | 01:57 AM
  #27  
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Originally Posted by Darwin
Any turbo kit can be installed without an intercooler and run low boost #'s Intercooling just makes the process more efficient and makes it safer when upping the boost. STS systems are a joke and should only be used when there isn't enough room in the engine bay for a conventional system. Turbo's need heat to spool, this is why STS generally uses smaller turbo's than their competitors, to decrease spool time from the inherently slower spool form their system. Using a smaller turbocharger means less efficiency in the target range in MOST cases, if your competitors are using properly sized turbos. This means the turbo itself will generate more heat when pushing a given CFM. Even though it's in the rear ACT's are not going to be all that much lower. On top of that, when in a turbo's efficiency range, with proper cooling many times air charge temps are near ambient. You are not going to see major power gains from a few degrees lower air temps. You need massive temp changes for that. Conventional systems will spool faster with the same turbo and put out very similar air temps after intercooling, so where is the benefit of remote mount systems?
Just be quiet, K thx.



There is no real advantage or disadvantage to rear mounted turbos. They have slightly more lag but not much, Like hitting full boost at say 3700 rpms instead of 3500 rpms, In the 200-300 hp range you wont notice a difference, And most people still wont beyond those power levels.

I think rear mounted turbo kits are awesome because they can be sleepers, When you pop the hood it just looks like a cold air intake, But what they dont know is that pipe runs back to the turbo which is tucked under the car
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Old Dec 13, 2008 | 02:05 AM
  #28  
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the benefit is also that its cheaper than conventional turbo charging, if you do it all urself, comes out cheaper than 3g's it cost to buy the hahn kit
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Old Dec 13, 2008 | 02:11 AM
  #29  
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Originally Posted by Jn2
the benefit is also that its cheaper than conventional turbo charging, if you do it all urself, comes out cheaper than 3g's it cost to buy the hahn kit
Thats true also....


Its realy just personal preference
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Old Dec 13, 2008 | 02:13 AM
  #30  
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Though rear mount is more prone to a boost leak.
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Old Dec 13, 2008 | 02:14 AM
  #31  
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Originally Posted by Perfect.disguise
Though rear mount is more prone to a boost leak.
They are, But they aren't hard to seal up so its really not an issue.
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Old Dec 13, 2008 | 03:40 AM
  #32  
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Originally Posted by car_guy_09
Just be quiet, K thx.



There is no real advantage or disadvantage to rear mounted turbos. They have slightly more lag but not much, Like hitting full boost at say 3700 rpms instead of 3500 rpms, In the 200-300 hp range you wont notice a difference, And most people still wont beyond those power levels.

I think rear mounted turbo kits are awesome because they can be sleepers, When you pop the hood it just looks like a cold air intake, But what they dont know is that pipe runs back to the turbo which is tucked under the car
Just be quiet, K thx.

Remote mount systems sleepers? Do you have any idea how easy it is to hear the turbo on a remote mount system? There is a real disadvantage (having to use a smaller turbo for the same spool with the same power outputs) and no advantage. I can show you the math if you want. When you have exhaust gasses cooling they lose energy and decease in volume. This adds to the lag of the extra piping and what not, also decreasing kinetic energy transferred to the turbo. Remote mount systems have 0 advantages that aren't severely outweighed by disadvantages.
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Old Dec 13, 2008 | 03:45 AM
  #33  
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Originally Posted by Darwin
Just be quiet, K thx.

Remote mount systems sleepers? Do you have any idea how easy it is to hear the turbo on a remote mount system? There is a real disadvantage (having to use a smaller turbo for the same spool with the same power outputs) and no advantage. I can show you the math if you want. When you have exhaust gasses cooling they lose energy and decease in volume. This adds to the lag of the extra piping and what not, also decreasing kinetic energy transferred to the turbo. Remote mount systems have 0 advantages that aren't severely outweighed by disadvantages.
Remote mount systems arent any easier to hear than when they are mounted in the engine bay. And your whole "having to use a smaller turbo for the same spool with the same power outputs" is total bs, But im done with this topic, I think its obvious who knows what they are talking about.


There is no advantage or disadvantage to STS turbo kits.
/Thread
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Old Dec 13, 2008 | 03:52 AM
  #34  
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Originally Posted by car_guy_09
Remote mount systems arent any easier to hear than when they are mounted in the engine bay. And your whole "having to use a smaller turbo for the same spool with the same power outputs" is total bs, But im done with this topic, I think its obvious who knows what they are talking about.


There is no advantage or disadvantage to STS turbo kits.
/Thread
You don't have a clue. Remote mount systems replace the muffler and there is no resonation to muffle the "whistle" sound of the turbo. Go ask squires if you can tell from sound when a car has a remote mount system they will tell you "**** yes!" It is not total bs,

Less heat on hot side of turbo = less work (if you think this is like working for a company, go take a course on physics) = less kinetic energy transfer to cold side. Less KE = lower rpm at given exhaust gas output from the engine. lower rpm = less CFM at a slightly lower ACT than a conventional system. On top of that you will have to use a smaller turbo to spool as quickly in comparison to a conventional system. Using a conventional system with the proper cooling system = better than any remote mount system. This has been tested and proven in multiple situations. You're right it is obvious who knows what they are talking about and who has the experience here. I think you should know the background of the people you are talking to before you claim things like that. How old are you?
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Old Dec 13, 2008 | 03:55 AM
  #35  
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Originally Posted by Darwin
You don't have a clue. Remote mount systems replace the muffler and there is no resonation to muffle the "whistle" sound of the turbo. Go ask squires if you can tell from sound when a car has a remote mount system they will tell you "**** yes!" It is not total bs,

Less heat on hot side of turbo = less work (if you think this is like working for a company, go take a course on physics) = less kinetic energy transfer to cold side. Less KE = lower rpm at given exhaust gas output from the engine. lower rpm = less CFM at a slightly lower ACT than a conventional system. On top of that you will have to use a smaller turbo to spool as quickly in comparison to a conventional system. Using a conventional system with the proper cooling system = better than any remote mount system. This has been tested and proven in multiple situations. You're right it is obvious who knows what they are talking about and who has the experience here. I think you should know the background of the people you are talking to before you claim things like that. How old are you?

and what background do you have exactly? read a few magazines and forum threads?
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Old Dec 13, 2008 | 03:57 AM
  #36  
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Originally Posted by Darwin
You don't have a clue. Remote mount systems replace the muffler and there is no resonation to muffle the "whistle" sound of the turbo. Go ask squires if you can tell from sound when a car has a remote mount system they will tell you "**** yes!" It is not total bs,

Less heat on hot side of turbo = less work (if you think this is like working for a company, go take a course on physics) = less kinetic energy transfer to cold side. Less KE = lower rpm at given exhaust gas output from the engine. lower rpm = less CFM at a slightly lower ACT than a conventional system. On top of that you will have to use a smaller turbo to spool as quickly in comparison to a conventional system. Using a conventional system with the proper cooling system = better than any remote mount system. This has been tested and proven in multiple situations. You're right it is obvious who knows what they are talking about and who has the experience here. I think you should know the background of the people you are talking to before you claim things like that. How old are you?
Im 15, Got a problem with it?

Your less energy theory is correct, Its just not as major as your making it sound. 95% of people wouldn't notice a difference. They wouldnt make the kits if they didnt work. Have you ever even seen one?

Originally Posted by Projekt
and what background do you have exactly? read a few magazines and forum threads?
Would also like to know this
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Old Dec 13, 2008 | 04:01 AM
  #37  
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Originally Posted by car_guy_09
Im 15, Got a problem with it?



Would also like to know this
im going to assume he acctualy built the "turbocharger" back in the early 30's
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Old Dec 13, 2008 | 04:03 AM
  #38  
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Originally Posted by Projekt
im going to assume he acctualy built the "turbocharger" back in the early 30's
Eh as much as he knows he probably had it planned well before that
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Old Dec 13, 2008 | 09:39 AM
  #39  
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Originally Posted by car_guy_09
Remote mount systems arent any easier to hear than when they are mounted in the engine bay.
Oh, really?

http://www.youtube.com/watch?v=yP-W1OzBvWo
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Old Dec 13, 2008 | 10:24 AM
  #40  
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Look at my set up, im running 10 psis with the garrett turbo kit. Youll be fine, anything over 10 psis is a risk for the 2.2. Im going to be pushing a new 11 to 12 psis so now I have to work on rods and pistons. Talk to xCobalt05x on the net, hes got a STS set up for his auto 2.2 cobalt.
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Old Dec 13, 2008 | 10:52 AM
  #41  
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2.2 STS turbo right here, that would be ME

258.94whp 215.68wtrq @ 10psi

Launch/dig video clicky

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Originally Posted by Perfect.disguise
Though rear mount is more prone to a boost leak.
all my charge piping is welded w/ the exception of 5 cuplers. one on the turbo to the charge piping, 2 on the IC, one on the throtle body and one on the piping from the IC to the TB

Last edited by xCobalt05x; Dec 13, 2008 at 10:54 AM. Reason: Automerged Doublepost
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Old Dec 13, 2008 | 11:36 AM
  #42  
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Originally Posted by xCobalt05x
all my charge piping is welded w/ the exception of 5 cuplers. one on the turbo to the charge piping, 2 on the IC, one on the throtle body and one on the piping from the IC to the TB
Still more likely to hit/toss something up and damage the piping.
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Old Dec 13, 2008 | 11:38 AM
  #43  
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Originally Posted by Perfect.disguise
Still more likely to hit/toss something up and damage the piping.
lol, ive never in my life had something hit the underside of my car. what do you do go off roading or something, lol
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Old Dec 13, 2008 | 12:38 PM
  #44  
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Originally Posted by car_guy_09
Im 15, Got a problem with it?

Your less energy theory is correct, Its just not as major as your making it sound. 95% of people wouldn't notice a difference. They wouldnt make the kits if they didnt work. Have you ever even seen one?



Would also like to know this
I have bachelors in science from the university of michigan in nuclear engineering. Although my specific major is not directly related to the topic, you must take a lot of engineering physics courses for this major and I also have a lot of experience with cars. Yes, I have seen two of these setups. One twin setup on a gto and one single setup on a v6 mustang. The guy with the mustang lives in my neighborhood and i helped install it. If you don't think you can hear them, you obviously have never seen one because they are wildly obvious. They are also inneficient and pointless compared to a conventional system. The only advantage is ease of install and if there isn't enough room in the engine bay. On top of that there are more potential problems.

Originally Posted by Perfect.disguise
http://www.youtube.com/watch?v=enYxU...eature=related another example.

and another http://www.youtube.com/watch?v=vBE_wy0zbMY

Last edited by Darwin; Dec 13, 2008 at 12:39 PM. Reason: Automerged Doublepost
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Old Dec 13, 2008 | 01:17 PM
  #45  
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Originally Posted by Darwin
I have bachelors in science from the university of michigan in nuclear engineering. Although my specific major is not directly related to the topic, you must take a lot of engineering physics courses for this major and I also have a lot of experience with cars. Yes, I have seen two of these setups. One twin setup on a gto and one single setup on a v6 mustang. The guy with the mustang lives in my neighborhood and i helped install it. If you don't think you can hear them, you obviously have never seen one because they are wildly obvious. They are also inneficient and pointless compared to a conventional system. The only advantage is ease of install and if there isn't enough room in the engine bay. On top of that there are more potential problems.



http://www.youtube.com/watch?v=enYxU...eature=related another example.

and another http://www.youtube.com/watch?v=vBE_wy0zbMY
compaired to what? M62 supercharger, now that is what is "inneficient" what those guys make at 18lbs i make more on 10lbs

with me being an automatic trany you have to do the 20% loss of hp to the wheels... 323.68(crank hp) - 20% = 258.944 (what i dyno'd at)
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Old Dec 13, 2008 | 01:26 PM
  #46  
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Originally Posted by xCobalt05x
compaired to what? M62 supercharger, now that is what is "inneficient" what those guys make at 18lbs i make more on 10lbs

with me being an automatic trany you have to do the 20% loss of hp to the wheels... 323.68(crank hp) - 20% = 258.944 (what i dyno'd at)
read the rest of the sentence you bolded....
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Old Dec 13, 2008 | 01:34 PM
  #47  
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ok, my bad. just seeing that part put sand in my croch. you do you, and the rest of will do us. i don't see the "inneficent" set up you are talking about. im making 17.86chp per lb of boost, so im lacking this vision you have
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Old Feb 1, 2009 | 03:56 PM
  #48  
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i am gonna be going with the sts turbo system
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