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 08-05-2006 | 01:43 PM
  #101  
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Piping run, intercooler to throttle body


Pardon the blurry! Here's where we make our way from the intercooler outlet to the throttle body.
Old 08-05-2006 | 01:47 PM
  #102  
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Turbocharger as viewed from top


Here you can see the Super 20G turbo, tucked in close to the engine for maximum response and best heat transfer. There is a heat shield above the turbo that's been removed for this view. The wastegate actuator features an easily-adjustable turnbuckle to fine-tune boost level.
Old 08-05-2006 | 01:50 PM
  #103  
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Undercar view


Here you can see the turbocharger from underneath, as well as the downpipe flex-section. We replace the stock catalytic converter and pipe, for they are not up to the airflow of the turbocharged engine.
Old 08-05-2006 | 01:53 PM
  #104  
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Last view: downpipe


The downpipe continues rearward to hook up with the cat-back exhaust. It's a 2.5" diameter. There's no cat on this car, but in production, we will offer cat options.

That's the last photo for now. Thanks!
Old 08-05-2006 | 01:54 PM
  #105  
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Really nice pictures. That should keep some 2.4 owners up at night as they wonder when they can have theirs.
Old 08-05-2006 | 01:57 PM
  #106  
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Originally Posted by victory_red_SS
Really nice pictures. That should keep some 2.4 owners up at night as they wonder when they can have theirs.
Ya ! its like going to Disney land but for 2.4 owners,Im sure some are pretty excited
Old 08-05-2006 | 02:00 PM
  #107  
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That just looks awesome. I can see the fitment issues with the auto trans on the turbo-interooler piping now. I like it though... can't wait to see some of these out on the roads.
Old 08-05-2006 | 02:03 PM
  #108  
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Looks great guys! I can't wait to see what you have going for a 2.0 turbo swap.
Old 08-05-2006 | 02:10 PM
  #109  
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2 questions:

1. With the intercooler to throttle body duct located in the right front fender well, is there any room left there for the inlet air filter to be run to the same location so it can recieve cooler air then the present location of under the hood?

2. I see the oil supply and return lines for the turbo in your under side picture. Does this set up use the additional water cooling as well? If not, can it?

Separately, about the auto/manual trans issue...

My goal with this car was to build a daily driver that produced the most horsepower possible in the most reliable fashion possible. I bought an auto specifically for two reasons. The first was as a daily driver, an auto is quite frankly easier. Second, most drag cars are in fact automatics. With the current abilities to tune the 4T45E trans, it can be a great drag car as well as a driver.

Last edited by Halfcent; 08-05-2006 at 02:30 PM.
Old 08-05-2006 | 03:03 PM
  #110  
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Originally Posted by Halfcent
2 questions:

1. With the intercooler to throttle body duct located in the right front fender well, is there any room left there for the inlet air filter to be run to the same location so it can recieve cooler air then the present location of under the hood?

2. I see the oil supply and return lines for the turbo in your under side picture. Does this set up use the additional water cooling as well? If not, can it?

Separately, about the auto/manual trans issue...

My goal with this car was to build a daily driver that produced the most horsepower possible in the most reliable fashion possible. I bought an auto specifically for two reasons. The first was as a daily driver, an auto is quite frankly easier. Second, most drag cars are in fact automatics. With the current abilities to tune the 4T45E trans, it can be a great drag car as well as a driver.
We are looking at the possibility of an airbox for the air filter to allow routing cooler outside air for higher powered iterations.

We've done a number of systems with similar underhood air filters, and with effective intercooling, all has been well at these power levels. Available underhood space is at a premium on these cars, so component placement becomes a dance of deciding which areas can be compromised, and which cannot. Free-flowing piping runs that are minimally intrusive to surrounding components are the biggest priority, and thus the overriding challenge.

We don't have watercooling on this particular system, but it could be readily retrofitted...the turbocharger does have accomodations for it, and we have fittings and related parts to make it rather straightforward.

You are right on about the advantages of the automatic! As technology availability continues to improve, it's ever-more viable.
Old 08-05-2006 | 03:46 PM
  #111  
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Very nice... any idea on when this will be on the market and how much it will cost...
Old 08-05-2006 | 03:52 PM
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WOW I bet that car sounds SICK> can u guys take a sound recording.
Old 08-05-2006 | 04:06 PM
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3 questions: when? where? how much?
Old 08-05-2006 | 05:22 PM
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Originally Posted by alleycat58
BUT, 95% of the ones that I see on a daily basis are either a) older people or b) girls.
Hey, watch it!

I'm 54. Look at my car. It ain't stock. A LOT of "older people" were building performance before most of you were born, and are still interested. Some of us even made the leap to modern technology rather than V-8's and Holleys

I also know a lot of "girls" that like to build cars.

Now, how many out there will have the bucks to buy a turbo kit, I don't know. I, for one, would prefer a turbo/automatic set-up, because they're much more consistent running brackets (take a look at the number of drag cars with autos - there's a reason, and it ain't total performance).
Old 08-05-2006 | 05:26 PM
  #115  
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Looking at the pictures, if we say had or wanted a strut bar, would that effect if it will fit or not, because looking at where my strut bar is i think that would be a tight fit, but i also have an auto so the kit might be slightly reworked i think...correct me if im wrong
Old 08-05-2006 | 05:57 PM
  #116  
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Bill....Ok, I see the intake pipe, and the post intercooler pipe to the TB.

Where does the charge pipe run from the turbo to the intercooler? Also where is the bypass valve?

Bill I assume it works ok but how come you are running the MAF on the charge pipe right before the TB? Wouldn't/couldn't you run the MAF right above the intake cone filter pre-turbo and the bypass valve post turbo?

I am assuming they are there I just can't see them...Otherwise...thanks for bringing reality to our little corner of the world..we have BOOST.!
Old 08-05-2006 | 06:07 PM
  #117  
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Originally Posted by GTP
Bill....Ok, I see the intake pipe, and the post intercooler pipe to the TB.

Where does the charge pipe run from the turbo to the intercooler? Also where is the bypass valve?

Bill I assume it works ok but how come you are running the MAF on the charge pipe right before the TB? Wouldn't/couldn't you run the MAF right above the intake cone filter pre-turbo and the bypass valve post turbo?

I am assuming they are there I just can't see them...Otherwise...thanks for bringing reality to our little corner of the world..we have BOOST.!
Second to last pic shows the pipe from the turbo to the intercooler running under the engine.

Good question about the MAF sensor though. Dan and I were planning on putting that where you mentioned... before the turbo. Bypass valve is another good point... I didn't see it in the pics. It has to be after the turbo... but I don't see it.
Old 08-05-2006 | 06:28 PM
  #118  
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Originally Posted by Wo|F
3 questions: when? where? how much?
Soon. Probably later this summer.

You can purchase directly from us, or from one of our dealers.

Pricing will be determined soon...we have to finish development before we can accurately cost it out.
Old 08-05-2006 | 06:33 PM
  #119  
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Originally Posted by GTP
Bill....Ok, I see the intake pipe, and the post intercooler pipe to the TB.

Where does the charge pipe run from the turbo to the intercooler? Also where is the bypass valve?

Bill I assume it works ok but how come you are running the MAF on the charge pipe right before the TB? Wouldn't/couldn't you run the MAF right above the intake cone filter pre-turbo and the bypass valve post turbo?

I am assuming they are there I just can't see them...Otherwise...thanks for bringing reality to our little corner of the world..we have BOOST.!
Yes, the charge pipe from turbo to intercooler runs under the engine. The blow-off valve is located on it.

We've done a fair bit of experimentation, and the MAF functions best in the location shown

You're welcome! Thanks for your interest. We're looking forward to these getting out there!
Old 08-05-2006 | 06:38 PM
  #120  
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Ok so it's a BOV and not just a bypass valve. Interesting.
Old 08-05-2006 | 10:44 PM
  #121  
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lookin good and the pics are great....im sure that we could probably find somewhere to run that intake outside of the engine bay.....and guys the maf is in side the intercooler to tb pipe....maybe its a better idea cuz the air is cooler and maybe it would be more efficient and fuel productive to put it in the intercooler to t/b pipe....wouldt you guys say the same
Old 08-05-2006 | 11:07 PM
  #122  
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Originally Posted by mike25
lookin good and the pics are great....im sure that we could probably find somewhere to run that intake outside of the engine bay.....and guys the maf is in side the intercooler to tb pipe....maybe its a better idea cuz the air is cooler and maybe it would be more efficient and fuel productive to put it in the intercooler to t/b pipe....wouldt you guys say the same
I'm not sure what you mean by fuel productive. I was taught that in cars with a MAF sensor, the sensor is usually placed before the turbo (in the intake piping) and a bypass valve is used to vent the pressure from the charge pipe back into the intake piping (after the MAF sensor). Hahn's setup places the MAF sensor in the ic-tb pipe and vents the pressure before the ic into the atmosphere with a blowoff valve (therefore venting before passing the MAF sensor). I think the advantage of this would be more accurate readings from the MAF sensor and probably better overall performance of the fuel management system.
Old 08-05-2006 | 11:33 PM
  #123  
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those photos bring tears to my eyes, i want this so bad right now.
Old 08-06-2006 | 12:07 AM
  #124  
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So... ummm what do you gotta do to make a kit for the 2.4 with the auto tranny?
Old 08-06-2006 | 12:21 AM
  #125  
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So will the kits have the 20g we see here or the 16g like the solstice kits?


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