08-10 SS Turbocharged General Discussion Discuss the 2008 - 2009 Chevy Cobalt SS Turbocharged. On sale since the second quarter of 2008.

Bnr k04-gt28

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Old Dec 7, 2010 | 08:04 PM
  #376  
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hmm, i can buy a k04 that needs a rebuild for very cheap. i wonder if that would fly sending that in for the stage 1.
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Old Dec 7, 2010 | 08:07 PM
  #377  
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From: Tejas
Originally Posted by Dart_SI
hmm, i can buy a k04 that needs a rebuild for very cheap. i wonder if that would fly sending that in for the stage 1.
The cool thing about this BNR deal is that it doesn't matter really if the one you send in works or not, because he completely rebuilds it anyway.
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Old Dec 7, 2010 | 08:10 PM
  #378  
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works for me. i may just hop on the screaming deal i was offered then and just get the stage 1 later.

how hard is swapping out the stock turbo? i may be going to durastic measures but if something dumb goes wrong (not caused by me) and i need warranty work done, id prolly go thru all the work of putting the stocker back in and flashing to stock to avoid trouble.

if it was my fault (me being stupid) ill be straight and pay up
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Old Dec 7, 2010 | 08:40 PM
  #379  
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when im not on my GMS1 tune and I have the byt tune on, (361wtrq) my clutch juuust starts to slip / hesitate when im on it. On GMS1 its fine. I would def get a clutch WAY before anyone thinks about a turbo swap.
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Old Dec 7, 2010 | 10:39 PM
  #380  
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Anyone have this K04-GT28 hybrid installed and been on the dyno yet?
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Old Dec 7, 2010 | 10:45 PM
  #381  
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Originally Posted by batboy
Anyone have this K04-GT28 hybrid installed and been on the dyno yet?
Tglems will probly be the first since he already has one in hand!
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Old Dec 7, 2010 | 10:49 PM
  #382  
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I imagine the results will be like Mike. Who has a GT2871.... He got 422WHP
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Old Dec 7, 2010 | 10:59 PM
  #383  
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So to not have to run a aftermarket BOV i can only get the Stage 1?
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Old Dec 8, 2010 | 07:26 AM
  #384  
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From: Kansas
Originally Posted by D-mac
So to not have to run a aftermarket BOV i can only get the Stage 1?
Yes, that's correct as stated on their website.

That's what I'm leaning towards also, the 2860 upgrade. I'm assuming you'll need the basic mods to support this too, namely a cold air induction, 3" downpipe, better IC and charge pipes. I have everything but the IC, looking at getting the MPx.
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Old Dec 8, 2010 | 08:42 AM
  #385  
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Originally Posted by batboy
Yes, that's correct as stated on their website.
link? i cant find any cobalt stuff on their site.
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Old Dec 8, 2010 | 08:52 AM
  #386  
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someone needs to start porting the stock cover for him... make the 2860 hybrid look like a stock turbo you could probably hustle some people lol
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Old Dec 8, 2010 | 08:56 AM
  #387  
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Can some one pm me the bnr guys email. I need to talk to him about meeting up with him.
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Old Dec 8, 2010 | 10:26 AM
  #388  
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I'll try to be the first. I need to wait until I get the spacer in, which I'm sure will be soon!
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Old Dec 8, 2010 | 10:28 AM
  #389  
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Im going to use my bonus money on this, lol.
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Old Dec 8, 2010 | 10:58 AM
  #390  
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Same here, using part of my 75k bonus to get this setup.^^^^ you going to the arundel meet? I was thinking on going.
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Old Dec 8, 2010 | 11:15 AM
  #391  
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Go to the BNR Supercars website and click on the GM Products link (ignore the sub-menu that pops up). Scroll down to just below the photo to the "Solstice, Sky, Cobalt SS, HHR SS" link and click on that, tada, you're there. Lots of good info and pics on the website.

BNR LNF Stage 1
The stage 1 is a BNR GT2860 non ball bearing CHRA that is fitted to the OE turbine and compressor housing. Garrett rates this turbocharger to flow 370 BHP. You still have the use of the factory bypass valve and wastegate actuator. The stage 1 is 100% bolt up with only the inner water line to be modified. If you already have aftermarket parts such as a down pipe or aftermarket air intakes, no worries, all the parts will bolt up to this turbocharger upgrade!

BNR GT2871 Stage 2
The BNR Stage 2 for the LNF cars is equipped with a 400 BHP BNR GT2871 non ball bearing CHRA (center housing rotating assembly). The LNF K04 turbine housing is machined for the GT28 CHRA. The stock compressor housing flow rates are maxed with the stage 1 CHRA. The stage 2 compressor housing has a larger volute/air passage allowing for the increased volume of the stage 2 CHRA. The stage 2 is not 100% bolt up. Since the compressor housing is upgraded, there is no longer the built in bypass valve.

Last edited by batboy; Dec 8, 2010 at 11:35 AM.
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Old Dec 8, 2010 | 11:23 AM
  #392  
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thanky sir! might want to delete that post though, like you said to avoid vendor issues!
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Old Dec 8, 2010 | 12:02 PM
  #393  
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Originally Posted by 40rty
Same here, using part of my 75k bonus to get this setup.^^^^ you going to the arundel meet? I was thinking on going.
well geez, why dont you buy us all a used or broken K04 turbo and get it modified for us, lol. Im only getting like $3400 most of which will go to taxes.

yeah Im planning on going to the D&B meet. Im going to see the Russian Ballet with the GF afterwards as our Aniversary type thing.

Last edited by CudaJoe; Dec 8, 2010 at 12:02 PM. Reason: Automerged Doublepost
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Old Dec 8, 2010 | 12:11 PM
  #394  
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stage 1 + zzp cams + the my meth kit + byt tune i think will do fine for me =) I bet i can get more than 370 out of it.
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Old Dec 8, 2010 | 04:59 PM
  #395  
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Originally Posted by batboy
Go to the BNR Supercars website and click on the GM Products link (ignore the sub-menu that pops up). Scroll down to just below the photo to the "Solstice, Sky, Cobalt SS, HHR SS" link and click on that, tada, you're there. Lots of good info and pics on the website.

BNR LNF Stage 1
The stage 1 is a BNR GT2860 non ball bearing CHRA that is fitted to the OE turbine and compressor housing. Garrett rates this turbocharger to flow 370 BHP. You still have the use of the factory bypass valve and wastegate actuator. The stage 1 is 100% bolt up with only the inner water line to be modified. If you already have aftermarket parts such as a down pipe or aftermarket air intakes, no worries, all the parts will bolt up to this turbocharger upgrade!

BNR GT2871 Stage 2
The BNR Stage 2 for the LNF cars is equipped with a 400 BHP BNR GT2871 non ball bearing CHRA (center housing rotating assembly). The LNF K04 turbine housing is machined for the GT28 CHRA. The stock compressor housing flow rates are maxed with the stage 1 CHRA. The stage 2 compressor housing has a larger volute/air passage allowing for the increased volume of the stage 2 CHRA. The stage 2 is not 100% bolt up. Since the compressor housing is upgraded, there is no longer the built in bypass valve.
elaborate?
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Old Dec 8, 2010 | 04:59 PM
  #396  
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Originally Posted by drewbroo
I imagine the results will be like Mike. Who has a GT2871.... He got 422WHP
yeah should be around there but spool a little faster.
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Old Dec 8, 2010 | 06:44 PM
  #397  
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Originally Posted by Dart_SI
elaborate?
Hey, I just quoted a summary from the website. I'm not affiliated with BNR. There's more info and details on the website if you go look or you can email them if you have specific questions like I've done. They have been quick to patiently answer my lame questions by email so far.
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Old Dec 8, 2010 | 06:48 PM
  #398  
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^^^^ this is the only thing I want to see before buying. What the spool will actually be. If its anything passed 3800rpms I'm not getting it.
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Old Dec 8, 2010 | 07:08 PM
  #399  
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Hey Dart SI, I looked on their website again and this might answer your question about the coolant line. Sounds like it's a minor issue and they provide the hardware to fix it.

Our custom BNR GT28 center housings are made for this particular application with the correct oil feed thread pitch, oil drain bolt pattern and correct coolant service port thread pitches. What this does is allows all the original hardware except for 1 water line to bolt up without any issues. Since the coolant ports are on opposite sides on the BNR CHRA (center housing rotating assembly), there will be a banjo fitting and coolant hose that is supplied with the turbocharger upgrades.
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Old Dec 8, 2010 | 07:22 PM
  #400  
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Originally Posted by 40rty
^^^^ this is the only thing I want to see before buying. What the spool will actually be. If its anything passed 3800rpms I'm not getting it.
my guess is since the exhaust side of the turbo is the same, it will spool the same. Definately wont take 3800 rpms to spool.

I emailed him a few times now. My replys are promising. He can build the turbo and then send it to you for an additional $300 on top of the $950. Im guessing to get the $300 back you just send your core to him after you get the turbo.
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