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 02-03-2011, 04:29 PM
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Just rec'd my 2860.
Old 02-03-2011, 04:31 PM
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Originally Posted by pbass
Just rec'd my 2860.
Sweet!
Old 02-03-2011, 04:47 PM
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Originally Posted by elecblue06
i thought the 2871 came with a new water line or something?
No you kindve bend one then flip another line around I had tglems take pics of what we did
Old 02-03-2011, 05:25 PM
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Originally Posted by FF_ace
No you kindve bend one then flip another line around I had tglems take pics of what we did


ahh my misunderstanding i thought one line was new and the other was modded

whats the outlet of the extension? 2.25 like stock or 2.5?
Old 02-03-2011, 11:28 PM
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Originally Posted by HHRSSouth
So I drove to BNR Supercars today and got my K04-GT2871 with the extension tip.

Brian was super cool and showed me his operation he has set up. I bet I spent a good 45 min to a hour there chatting with him. He told me he was really looking forward to working with the LNF crowd and from my own experience, would say hes a man of his word.

He also showed me the K04-GT2860's and while in the pictures he posts shows the size difference, in person you can really see the difference clearly between the K04 cartridge, the 2860 cartridge and the 2871.

He uses real Garrett parts, I seen Garrett parts boxes all over the place. Opened and unopened.

The man don't just make turbochargers for other cars, he uses them on his vehicles and he drag races. I saw (2) Mazda 3 GTX's (turbo awd), a Syclone, Typhoon, DSM, RX-7 and a car he is sticking a TT 2JZE supra engine into.

Here are some pictures of everything you get/need with the K04-GT2871 and mine has the extended tip welded on for the UICP.

Click to enlrage By the way the turbos are blasted to give it the silverish look, not painted.



Damn that looks sexy!! everytime i look at this thread i lean more toward doing this turbo swap instead of a complete new turbo set up.
Old 02-04-2011, 11:43 AM
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Thats prolly the spring pressure, you won't be able to go lower then that without some trickery.
Old 02-04-2011, 12:29 PM
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i think that just means that if you dont run any boost controller the turbo will hit 15 psi
Old 02-04-2011, 12:32 PM
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What I mean is inside that can is a spring, it has a set pressure. You can't go lower then the spring pressure, so its more important to know that really.
Old 02-04-2011, 04:33 PM
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Woohoo! Just oredered the 2860. Bryan said it should be here by tuesday or wednesday at the latest
Old 02-04-2011, 04:52 PM
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Originally Posted by cubaniche
Woohoo! Just oredered the 2860. Bryan said it should be here by tuesday or wednesday at the latest
Old 02-04-2011, 05:14 PM
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Thanks guys

So how long before you throw yours on pbass? Hows the install going HHRSouth?
Old 02-04-2011, 05:27 PM
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DDM stated that they also worked on the 2860 BNR turbo. They said that its not worth the cost, especially if they only got 320whp on it. For a little more in price, they recommend 2871 BNR turbo which netted 370whp.
Old 02-04-2011, 05:55 PM
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Id really like to see around 400hp on the 2871 is this unlikely even if im running e85/91 mix? If someone can get in the 400hp range ill deff be getting this kit.

Im also interested on where to get the blow off flange welded? Im looking at the new synapse engineering blow offs that work as a bpv too.
Old 02-04-2011, 06:04 PM
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Originally Posted by SKY888
DDM stated that they also worked on the 2860 BNR turbo. They said that its not worth the cost, especially if they only got 320whp on it. For a little more in price, they recommend 2871 BNR turbo which netted 370whp.
Depends on the goals for your car. Not all of us have the goal for all out power.
In my case, I want to be making 350-370 reliably and efficiently. We can achieve that with meth and E, pushing the stock turbo to its limits. Neither of I quite like much.
The 2860 falls into place perfectly for my goal. I maintain quicker spool than the 2871 and efficiency and power where I want. Keeping the cars driving characteristics almost like stock all the while making a good amount of more useable power

Good luck with your write-up and planning HHRSouth! Good luck to ya also with the turbo install whenever you are able to start it
Old 02-04-2011, 06:05 PM
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well, you can't ask anything anymore from a 2860 turbo. Even at the garrett website, its power range is 250-360hp. Getting 320whp, is very realistic on that turbo.....
Old 02-04-2011, 06:06 PM
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Originally Posted by Turbo'dSS
Id really like to see around 400hp on the 2871 is this unlikely even if im running e85/91 mix? If someone can get in the 400hp range ill deff be getting this kit.

Im also interested on where to get the blow off flange welded? Im looking at the new synapse engineering blow offs that work as a bpv too.
I'm going to try and get to a dyno when I have time...I'll let you know how it goes!
Old 02-04-2011, 06:17 PM
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Originally Posted by cubaniche
So how long before you throw yours on pbass?
Hoping to get the IC fitup squared away this weekend, have the coldside pipe on and the DP built and on the weekend after that, then, if Dub has the last weekend of Feb open, finally get the 2860 on and tuned.
Old 02-04-2011, 06:24 PM
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Originally Posted by pbass
Hoping to get the IC fitup squared away this weekend, have the coldside pipe on and the DP built and on the weekend after that, then, if Dub has the last weekend of Feb open, finally get the 2860 on and tuned.
Sounds good man. Thats awesome that you got in on that Treadstone deal. I may have mine on next weekend and tune it right away.
Old 02-04-2011, 07:02 PM
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Here's a pic of the turbo I bought for a core exchange with the crack. Is this where they all supposedly crack?
Old 02-04-2011, 07:05 PM
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the KO4 turbo is known to crack right there mine has it so does tglems
Old 02-04-2011, 07:07 PM
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OK, just wanted to make sure I didn't waste a $100 bucks. Thanks.
Old 02-04-2011, 07:20 PM
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Yeah, almost all of them have a crack there.
Old 02-04-2011, 08:01 PM
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I think that's the turbo he built while I was there. And Brian told me himself that it's normal so it will be ok my friends. Paul I would do by the ic myself
Old 02-04-2011, 08:15 PM
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Originally Posted by tglems
I'm going to try and get to a dyno when I have time...I'll let you know how it goes!
Awesome man! Yeah deff let me kno. Id really like to see the outcome of these turbos. I wish I wasn't in school fulltime and working fulltime I would have loved to help u guys install urs. I graduate next week tho so yay for freetime! Lol.
Old 02-04-2011, 08:39 PM
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Originally Posted by Turbo'dSS
Awesome man! Yeah deff let me kno. Id really like to see the outcome of these turbos. I wish I wasn't in school fulltime and working fulltime I would have loved to help u guys install urs. I graduate next week tho so yay for freetime! Lol.
I will try to post it up in the AZ B.S. thread! Hopefully somebody will come with me


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