2.4L LE5 Performance Tech 16 valve 171 hp EcoTec with 163 lb-ft of torque

Hahn Racecraft Cobalt SS 2.4 Turbo Prototype!

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Old 08-04-2006 | 12:17 PM
  #76  
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Originally Posted by PpAzZ1101
Oooh... looks like we might be going with a custom project afterall.
We may be to help you with an appreciable number of components to make the job easier if you go custom, so keep in touch!

You see, in order to offer our typical 'turn-key' solution to the public, we have to take care of 100% of the details. However, if you are already willing to see to many details yourself (as I can only assume you are if you're considering custom), we may still be able to offer you quite a bit.
Old 08-04-2006 | 12:23 PM
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sounds better and better everytime I hear of it
Old 08-04-2006 | 01:23 PM
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Originally Posted by Dragonsfire12345
as for the auto tranny, I know it can handle 300 hp at the crank so figure thats about 240-250whp
Indeed. The challenge is making it survive at part throttle, where the stock shift programming is not aggressive enough to prevent excessive clutch slip at upshift once turbocharged. It's all about effective controller re-programming.

Those of you with automatic 2.4's could help us commit to bringing an automatic version to market by letting us know how many of you are out there and interested. We'd also be interested in understanding just how many auto 2.4's were produced versus manual transmission. Just PM me!
Old 08-04-2006 | 01:39 PM
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Originally Posted by EcoBoost
We may be to help you with an appreciable number of components to make the job easier if you go custom, so keep in touch!

You see, in order to offer our typical 'turn-key' solution to the public, we have to take care of 100% of the details. However, if you are already willing to see to many details yourself (as I can only assume you are if you're considering custom), we may still be able to offer you quite a bit.
That would be really helpful! I'll be in touch.
Old 08-04-2006 | 04:41 PM
  #80  
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Hello everyone, just checking in... again i see that Bill has beaten me to the punch. Pics avaliable soon! Any other questions, just shoot, as i will be checking back often over the weekend!
Old 08-04-2006 | 07:22 PM
  #81  
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Originally Posted by EcoBoost
Indeed. The challenge is making it survive at part throttle, where the stock shift programming is not aggressive enough to prevent excessive clutch slip at upshift once turbocharged. It's all about effective controller re-programming.

Those of you with automatic 2.4's could help us commit to bringing an automatic version to market by letting us know how many of you are out there and interested. We'd also be interested in understanding just how many auto 2.4's were produced versus manual transmission. Just PM me!

i was told by a dealer that manual cobalts---non/sc---are actually pretty rare....i believe the ratio was like to every 10 autos made 1 manual is made.....so if you got a stick you either are really lucky that you came across one or you ordered it special from the factory---(thatd be my case)
Old 08-04-2006 | 08:23 PM
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Where is the pictures..... any idea on how much this will cost yet....
Old 08-04-2006 | 10:02 PM
  #83  
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i would imagine somewhere in the range of the soltice kit
Old 08-04-2006 | 10:22 PM
  #84  
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pics
Old 08-04-2006 | 10:32 PM
  #85  
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Originally Posted by mike25
i was told by a dealer that manual cobalts---non/sc---are actually pretty rare....i believe the ratio was like to every 10 autos made 1 manual is made.....so if you got a stick you either are really lucky that you came across one or you ordered it special from the factory---(thatd be my case)
I agree plus mine is a 4 door 5 speed with no roof, leather or side air bags making it nice and slim on the scales.
Old 08-05-2006 | 09:28 AM
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Originally Posted by EcoBoost
Indeed. The challenge is making it survive at part throttle, where the stock shift programming is not aggressive enough to prevent excessive clutch slip at upshift once turbocharged. It's all about effective controller re-programming.

Those of you with automatic 2.4's could help us commit to bringing an automatic version to market by letting us know how many of you are out there and interested. We'd also be interested in understanding just how many auto 2.4's were produced versus manual transmission. Just PM me!
there are so many auto 2.4s its not funny, youd be losing money by not making an auto kit, ill try and get you some production numbers on the autos to show you
Old 08-05-2006 | 10:00 AM
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Pics are almost done. Sorry about not getting them up yesterday...we've got the car apart right now while we replicate everything, but we're going to stick it all back together for a quick photoshoot here this AM.
Old 08-05-2006 | 10:02 AM
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Originally Posted by celicacobalt
there are so many auto 2.4s its not funny, youd be losing money by not making an auto kit, ill try and get you some production numbers on the autos to show you
Well the problem comes in when you look at how many owners of those auto 2.4s would want turbos. I whole-heartedly agree that there are more autos BUT, 95% of the ones that I see on a daily basis are either a) older people or b) girls. You and PpAzZ1101 are the only ones I've ever seen that would fit the "tuner" demographic with autos and I've probably seen 15 or more auto SS's rolling around.

The problem is MOST people that are buying an economy car with performance in mind are going to buy it in manual.
Old 08-05-2006 | 10:22 AM
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Originally Posted by GTP
I agree plus mine is a 4 door 5 speed with no roof, leather or side air bags making it nice and slim on the scales.
Same here. I had to get mine from Tennessee. No options= less weight.
Old 08-05-2006 | 10:44 AM
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Originally Posted by alleycat58
Well the problem comes in when you look at how many owners of those auto 2.4s would want turbos. I whole-heartedly agree that there are more autos BUT, 95% of the ones that I see on a daily basis are either a) older people or b) girls. You and PpAzZ1101 are the only ones I've ever seen that would fit the "tuner" demographic with autos and I've probably seen 15 or more auto SS's rolling around.

The problem is MOST people that are buying an economy car with performance in mind are going to buy it in manual.

I want the turbo and i have an auto... i couldn't find any manual SS N/A's when i was looking for cars so i got an auto because i needed a new car and didn't feel like the higher insurance and price for the s/c
Old 08-05-2006 | 10:52 AM
  #91  
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Originally Posted by zx2assassin
I want the turbo and i have an auto... i couldn't find any manual SS N/A's when i was looking for cars so i got an auto because i needed a new car and didn't feel like the higher insurance and price for the s/c
Yeah, not everyone could get a manual, but I was just pointing out you're going to need a lot more than just the number of 2.4 autos produced, I'm sure they want to see that there are a good number of you both that have the 2.4 auto and who want to turbo it.
Old 08-05-2006 | 11:36 AM
  #92  
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Originally Posted by alleycat58
Yeah, not everyone could get a manual, but I was just pointing out you're going to need a lot more than just the number of 2.4 autos produced, I'm sure they want to see that there are a good number of you both that have the 2.4 auto and who want to turbo it.
alleycat makes an excellent point. We've seen the same thing in other models, where production numbers alone only tell part of the story.

Question: Are all 2.4 Cobalts badged as 'SS' models?
Old 08-05-2006 | 11:50 AM
  #93  
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Originally Posted by EcoBoost
Question: Are all 2.4 Cobalts badged as 'SS' models?
Yes. It is a bit confusing. I guess somebody in GM marketing told Chevy that's how they should brand it.

The L61 equipped Cobalts are either "LS", "LT", or "LTZ" (LTZ is a sedan only). There are no just plain ordinary "Cobalt"s. There were in the 2005 model year. Then in 2006 the base model Cobalt got renamed the Cobalt LS

LE5 equipped Cobalts were released in 2006. They weren't available in 2005. They got called the "SS"

LSJ Cobalts are also called "SS", hence the confusion.

The LSJ is only a coupe, only a manual trans (unique to the model) and has limited other options. The LE5 can be a coupe or sedan, can have fabric or leather seats, manual or auto trans, and has the same exterior body as the LSJ except the front and rear facia lips are different.

Last edited by Halfcent; 08-05-2006 at 02:26 PM.
Old 08-05-2006 | 11:51 AM
  #94  
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Originally Posted by EcoBoost
alleycat makes an excellent point. We've seen the same thing in other models, where production numbers alone only tell part of the story.

Question: Are all 2.4 Cobalts badged as 'SS' models?

All 2.4 Cobalts are SS's.
Old 08-05-2006 | 12:32 PM
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Will the turbo kit come with instructions on how to tune it?
Old 08-05-2006 | 01:20 PM
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Originally Posted by Dragonsfire12345
Will the turbo kit come with instructions on how to tune it?
At this point, it will be a pre-tuned configuration for Stage II. Stage III and higher configurations, available later, will be aimed at the 'more advanced enthusuast' and will allow tuning changes.
Old 08-05-2006 | 01:27 PM
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Hahn Cobalt Turbo 2.4 Underhood


Here's a look at the turbosystem. The MAF sensor is in the pipe on the lower left that leads to the throttle body.
Old 08-05-2006 | 01:32 PM
  #98  
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Another underhood view


A slightly different angle of the underhood view. Yes, we've eliminated the engine cover! If a creative owner wanted to, it could be modified to fit with the turbosystem in place. Note the ample 3" piping used.
Old 08-05-2006 | 01:37 PM
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Front-mounted intercooler, fits beneath bumper


Here's a view of the FMIC with the bumper cover off. This core is a an in-house specialty of ours...although it is only 6" tall, it's a whopping 4.5" thick, and will readily support up to 600 HP. We developed this configuration to allow ample cooling volume and low restriction without having to hack up the bumper support for a taller core. Bumper supports are important, especially if you should ever have an accident. We've seen where insurance claims have been denied on cars with hacked (weakened!) bumper supports due to the additional damage incurred!
Old 08-05-2006 | 01:38 PM
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Front-mounted intercooler, fits beneath bumper

oops, double post, nevermind.


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