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 11-06-2012, 12:15 AM
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Crane,

The 2860 is no longer available because when it was put to the test it performed on par with the K04 and made no more gains than stock. It can be just slapped on, no problem but then why spend the money for something that is not going to be used as designed.

The only one available is the 2871 which has since been upgraded(internally). Billet compressor wheel, better shaft, Ceramic coated Turbine.
Old 11-06-2012, 12:29 AM
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Damn! Well so much for that.

Guess il have to put my big boy pants on and get something like the ZFR... just interested in the true stock replacement type of turbo mod. Thanks for the reply, its much appreciated. I believe the 2871 requires new charge pipping and BOV similar to a full on turbo swap?
Old 11-06-2012, 01:47 AM
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Originally Posted by 40rty
Crane,

The 2860 is no longer available because when it was put to the test it performed on par with the K04 and made no more gains than stock. It can be just slapped on, no problem but then why spend the money for something that is not going to be used as designed.

The only one available is the 2871 which has since been upgraded(internally). Billet compressor wheel, better shaft, Ceramic coated Turbine.
Originally Posted by cranemaster
Damn! Well so much for that.

Guess il have to put my big boy pants on and get something like the ZFR... just interested in the true stock replacement type of turbo mod. Thanks for the reply, its much appreciated. I believe the 2871 requires new charge pipping and BOV similar to a full on turbo swap?
Yeah, 40rty's right. I had a buddy install one and didn't have gains justify the cost of upgrading. He went to the BNR 2871 and benefited from going that route as far as cost/power.

There are other options out there of course, as well as threads that cover all the options in general. I'd recommend deciding what your goals are and then comparing the turbo power capacity and features based on that. Some have integrated BPVs and/or wastegates, for instance, and some do not, and that will have to be factored into your cost/goal assessment.
Old 11-06-2012, 02:00 AM
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Originally Posted by cranemaster
Damn! Well so much for that.

Guess il have to put my big boy pants on and get something like the ZFR... just interested in the true stock replacement type of turbo mod. Thanks for the reply, its much appreciated. I believe the 2871 requires new charge pipping and BOV similar to a full on turbo swap?
Its a true bolt-on, so you will be able to use your exsisting charge pipes with the 2871. Yes, you will have to get a BOV but that isn't hard and not costly.
Old 11-06-2012, 02:05 AM
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Once again, what he said.^

You can get a BOV/BPV welded into your existing charge pipe if you want, and then run a hose to the intake, if you're wanting to recirculate it.
Old 11-06-2012, 03:44 AM
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Originally Posted by Stamina
Once again, what he said.^

You can get a BOV/BPV welded into your existing charge pipe if you want, and then run a hose to the intake, if you're wanting to recirculate it.
Which you should. The ricer in you may desire otherwise but trust me, you'll get just a bit better response if you recirculate it and it should make tuning the car easier since you can run the MAF in the stock "draw through" style setup rather than relocating it to the cold side pipe. If you desire the sound, you'll still hear it just fine recirc'd.
Old 11-06-2012, 11:19 AM
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Im basically looking for power levels to max out my stock clutch.. which im starting to think can be done with a intake and the right tune. I wanted to go straight to a ZFR on a completely stock car and just have it turned way down... but I figure you need to pay to play. So I should grab a aggressive 26 tapering to 24PSI trifecta tune, and possibly an intake (if the sale goes through on here) and call it a day.. I got rid of my downpipe and il probably keep my exhaust stock no matter what I do to the car.

Then il probably be where I want to be until I can afford a clutch and ZFR and IC + pipping + new tune..

THanks for the quick replies and info guys
Old 11-06-2012, 12:18 PM
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you will max out the clutch with just a tune.. lol
Old 11-06-2012, 01:53 PM
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My stock clutch held 29pzi on the bnr before the trans went boom. Lol. Now im on a gmpp and a lsj trans with 0 issues. It seems the gamble I made on the gmpp was worth it. Lol
Old 11-06-2012, 03:13 PM
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Originally Posted by Dart_SI
My stock clutch held 29pzi on the bnr before the trans went boom. Lol. Now im on a gmpp and a lsj trans with 0 issues. It seems the gamble I made on the gmpp was worth it. Lol
Interesting....
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