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Old 06-09-2011, 02:44 AM   #351
Nisstrust
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Quote:
Originally Posted by HunterJohn View Post
How do you guys enjoy the new turbo's on your car? is it an extreme difference over stock?
Totally transformed is an understatement, however i have did a lot of other things along the way as well, but it feels and drives like normal, when driving sedately, open her up and lookout, you need to keep your wits about you...
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Old 07-03-2011, 11:31 AM   #352
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Im doing the GTX3071 on my 2.35L build. Can anyone show me some info and results on this turbo? Please.
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Old 07-03-2011, 12:03 PM   #353
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Originally Posted by SubaruWrxNewb View Post
Im doing the GTX3071 on my 2.35L build. Can anyone show me some info and results on this turbo? Please.
this is the only dynosheet I have seen, but it is a fog light setup.

http://forums.nasioc.com/forums/show...2106206&page=7
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Old 07-03-2011, 09:45 PM   #354
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yeah i haven't seen anything either.

The map is really similar to a regular gt3076r (actually out flows it some) so if the new aero does allow better spool (earlier boost threshold) for a given lb/hr compressor size the gtx3071 could be the best turbo ever for a DD subaru. If it doesn't it will still have better response and +5hp ish on a regular gt3076...

(sitting on the edge of my seat waiting...)

Cause i want one of these

http://www.atpturbo.com/mm5/merchant...egory_Code=SUB
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Old 07-03-2011, 11:57 PM   #355
SubaruWrxNewb
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My ATP GTX3071 will be here in mid July hopefully so I might have something to post for everyone. It's going on my destroked 2.5L build as stated earlier. I'm hoping it will fit perfectly!
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Old 07-04-2011, 12:45 AM   #356
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Quote:
Originally Posted by sumfoo1
yeah i haven't seen anything either.

The map is really similar to a regular gt3076r (actually out flows it some) so if the new aero does allow better spool (earlier boost threshold) for a given lb/hr compressor size the gtx3071 could be the best turbo ever for a DD subaru. If it doesn't it will still have better response and +5hp ish on a regular gt3076...

(sitting on the edge of my seat waiting...)

Cause i want one of these

http://www.atpturbo.com/mm5/merchant...egory_Code=SUB
I dont think the new aero improves spool. It seems that the new aero produces the same boost threshhold of the older wheel with more power. The old 3071 performed similarly to the 76 since they had the same turbine wheel.
I would like to see as well though for the file, but that's just my prediction.

Last edited by reid-o; 07-04-2011 at 01:32 AM.
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Old 07-04-2011, 03:32 AM   #357
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Quote:
Originally Posted by reid-o View Post
I dont think the new aero improves spool. It seems that the new aero produces the same boost threshhold of the older wheel with more power. The old 3071 performed similarly to the 76 since they had the same turbine wheel.
I would like to see as well though for the file, but that's just my prediction.
The GTX aero doesn't improve spool-up, per se. The idea was to make a higher flowing, more efficient wheel in the same size package as the older GT stuff.

However, you could improve spool if you look at it slightly differently. If you had a "regular" GT3076R, and replaced it with the GTX3071R you would have a 5mm smaller wheel...hence faster spool-up.

And, you get the same / slightly higher max flow. And higher compressor efficiency, leading to lower charge-air temps, hence higher midrange torque and the ability to run more timing.

You'd also get better transient response too (which doesn't show up on a map or dyno graph). Cruising along at part throttle, if you go to WOT immediately, the turbo will respond faster and you'll get more torque "on demand."
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Old 07-04-2011, 05:48 AM   #358
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Quote:
Originally Posted by reid-o

I dont think the new aero improves spool. It seems that the new aero produces the same boost threshhold of the older wheel with more power. The old 3071 performed similarly to the 76 since they had the same turbine wheel.
I would like to see as well though for the file, but that's just my prediction.
The gt3071 and 76 do have different turbine wheels however the gtx3071 has the same turbine as the 76 to not choke out the extra flow.
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Old 07-04-2011, 01:19 PM   #359
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Quote:
Originally Posted by sumfoo1 View Post
The gt3071 and 76 do have different turbine wheels however the gtx3071 has the same turbine as the 76 to not choke out the extra flow.
Actually, all 4 turbos share the same turbine wheel (GT3071R, GT3076R, GTX3071R, GTX3076R). The only 30-sized wheel that's slightly different is the cut-down one that was made to fit in the smaller GT28 style internally wastegated housings. It starts out life as the same wheel too, though.

The turbine wheel was basically "ahead of its time" when it came out originally so it is holding up quite well with the new compressor aero on the GTX turbos.
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Old 07-04-2011, 02:44 PM   #360
sumfoo1
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Quote:
Originally Posted by duder01 View Post
Actually, all 4 turbos share the same turbine wheel (GT3071R, GT3076R, GTX3071R, GTX3076R). The only 30-sized wheel that's slightly different is the cut-down one that was made to fit in the smaller GT28 style internally wastegated housings. It starts out life as the same wheel too, though.

The turbine wheel was basically "ahead of its time" when it came out originally so it is holding up quite well with the new compressor aero on the GTX turbos.
aaaanddd you would be incorrect

http://www.turbobygarrett.com/turbob..._700382_20.htm

http://www.turbobygarrett.com/turbob...R_803712_1.htm

http://www.turbobygarrett.com/turbob..._700382_12.htm

http://www.turbobygarrett.com/turbob...R_803713_1.htm

please read under turbine diameter.

I read
Code:
56.5mm	 	90trim for the gt3071r
60mm                84 trim for the  gtx3071, gt3076, and gtx3076
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Old 07-04-2011, 03:34 PM   #361
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Sorry...not incorrect.

That first link you posted is the "cut down" GT3071R I was referring to. Check out the turbine inlet diameter...56.5mm. This smaller inducer was necessary to get the GT30 wheel to fit in the wastegated GT28 housings.

The Garrett site's drop down menu is actually missing a link to the "normal" GT3071R. However you can find it on the products/turbochargers page. It has a 60mm turbine wheel, 84 trim just like all the other GT/GTX 30s. CHRA part numbers are 700177-22 and -23.

http://www.turbobygarrett.com/turbob...30/GT3071R.htm

More explanation at the bottom of ATP's page here:
http://www.atpturbo.com/mm5/merchant...egory_Code=GRT
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Old 07-04-2011, 11:24 PM   #362
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Quote:
Originally Posted by duder01 View Post
The GTX aero doesn't improve spool-up, per se. The idea was to make a higher flowing, more efficient wheel in the same size package as the older GT stuff.

However, you could improve spool if you look at it slightly differently. If you had a "regular" GT3076R, and replaced it with the GTX3071R you would have a 5mm smaller wheel...hence faster spool-up.

And, you get the same / slightly higher max flow. And higher compressor efficiency, leading to lower charge-air temps, hence higher midrange torque and the ability to run more timing.

You'd also get better transient response too (which doesn't show up on a map or dyno graph). Cruising along at part throttle, if you go to WOT immediately, the turbo will respond faster and you'll get more torque "on demand."
Don't get me wrong. I'm not secretly wishing for a bad result for this turbo.

It's logical to expect it to perform better than the old 3076 due to the smaller compressor wheel. It's just that the old 3071 already had a smaller compressor wheel and had only marginally better response (yes I know that this is subjective, but it's my opinion based off of driving one). That's why I'm waiting for results as well, but I doubt that the gains over the old 3076 will be easy to quantify.
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Old 07-04-2011, 11:49 PM   #363
typerv4
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Quote:
Originally Posted by sumfoo1 View Post
aaaanddd you would be incorrect

http://www.turbobygarrett.com/turbob..._700382_20.htm

http://www.turbobygarrett.com/turbob...R_803712_1.htm

http://www.turbobygarrett.com/turbob..._700382_12.htm

http://www.turbobygarrett.com/turbob...R_803713_1.htm

please read under turbine diameter.

I read
Code:
56.5mm         90trim for the gt3071r
60mm                84 trim for the  gtx3071, gt3076, and gtx3076

http://www.turbobygarrett.com/turbob...30/GT3071R.htm

Wh Dia 60mm

If u look further down the drop down list it is there.
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Old 07-07-2011, 08:21 PM   #364
hally
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What i dont understand is if the GT3082 never worked, people hated them and Garrett have taken it off their website cause the turbine couldn't flow the compressor potential, then why will a GTX3076 work?
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Old 07-07-2011, 10:50 PM   #365
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differant aero design, lighter billet wheel
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Old 07-08-2011, 01:34 AM   #366
spdracerut
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Originally Posted by hally View Post
What i dont understand is if the GT3082 never worked, people hated them and Garrett have taken it off their website cause the turbine couldn't flow the compressor potential, then why will a GTX3076 work?
A lot of it has to do with the speed/flow match between the compressor and turbine wheels. If you look at the compressor maps for the regular 3582 and the GTX3076, the GTX3076 has to spin faster to reach the same pressure ratio and flow rates as the 3582. This better matches the smaller turbine wheel.
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Old 07-08-2011, 09:49 PM   #367
typerv4
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Quote:
Originally Posted by spdracerut View Post
A lot of it has to do with the speed/flow match between the compressor and turbine wheels. If you look at the compressor maps for the regular 3582 and the GTX3076, the GTX3076 has to spin faster to reach the same pressure ratio and flow rates as the 3582. This better matches the smaller turbine wheel.
Could you do an article on that ? Its interesting stuff
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Old 07-09-2011, 11:19 PM   #368
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So would a GT35r with a tial hotside in a .63 be better than a gtxr35 with a 63.? If no one knows its fine, no big deal.
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Old 07-09-2011, 11:22 PM   #369
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Both would suck unless it was a 1.8 or 2.0 motor.

C
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Old 11-16-2011, 09:58 AM   #370
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Jeff do you have any plans to test the new GTX3576R? It would seem a larger turbine wheel is required to make the most out of the 64lbs/min 11 blade 76mm wheel. The smaller 76mm wheel should also spool faster than the laggier GTX3582. I would love to see a GTX3076 vs GTX3576 comparison.

http://www.enginebasics.com/Advanced...0GTX3576R.html
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Old 11-16-2011, 12:46 PM   #371
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Thats the new turbo of the week. Alot of us asked for it.

C
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Old 11-17-2011, 09:06 AM   #372
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Originally Posted by Muckman View Post
Jeff do you have any plans to test the new GTX3576R? It would seem a larger turbine wheel is required to make the most out of the 64lbs/min 11 blade 76mm wheel. The smaller 76mm wheel should also spool faster than the laggier GTX3582. I would love to see a GTX3076 vs GTX3576 comparison.

http://www.enginebasics.com/Advanced...0GTX3576R.html
I agree. That is a test I would like to see, but I since know its going to be a little bit of a wait before people can get there hands on that turbo.

JR
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Old 11-17-2011, 11:08 AM   #373
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Originally Posted by Clark Turner View Post
Both would suck unless it was a 1.8 or 2.0 motor.

C
You sure?

http://accessecu.com/dyno/index.php?...rgb1=000000255

Passes a bar of boost at 3800 RPM and makes over 500whp at 23psi.
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Old 11-17-2011, 11:41 AM   #374
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I agree. That is a test I would like to see, but I since know its going to be a little bit of a wait before people can get there hands on that turbo.

JR
They've been on sale for a couple weeks. I know for sure a couple guys have them in their hands.
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Old 11-18-2011, 09:00 AM   #375
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They've been on sale for a couple weeks. I know for sure a couple guys have them in their hands.
RE RE RE REEEEEAALLLLYYYY......than perrin HAS to have one. Lets see it! :-)

JR
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