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Old 02-16-2011, 05:11 PM   #301
spdracerut
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Quote:
Originally Posted by Md05STI View Post
Jeff, do you know if they plan on releasing a GTX with a 67mm inducer to compete with the 6765 and hta 3794?
They already make it, GTX4294:
http://www.turbobygarrett.com/turbob...ag_Racing.html
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Old 02-16-2011, 06:31 PM   #302
Md05STI
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Quote:
Originally Posted by spdracerut
I was told it was in the gt42 frame, not sure if that's true or not. I'm looking for a 67mm in the 35r frame like the 6765 or hta 3794.
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Old 02-16-2011, 08:53 PM   #303
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Originally Posted by juanmedina View Post
and on good gas
Of course good gas! Gas is important, especially with big power!

Quote:
Originally Posted by Md05STI View Post
Jeff, do you know if they plan on releasing a GTX with a 67mm inducer to compete with the 6765 and hta 3794?
The GTX3582 is the biggest one (highest flowing turbo that will fit with our kit. The bigger GTX turbos are not going to fit. But if FP offers that turbo with the T3 inlet along with the T3 4 bolt 3" outlet then it will fit! That is a perfect combo for our new Tuner kit!(no turbo and WG included)

Quote:
Originally Posted by DJSuperSoul View Post
I am running Perrin's rotated kit with gt35 / .63 housing on a fully built motor with Cosworth cams (dual avcs, 08 sti). I am seeing 377 whp at 17.5 lbs of boost, and 414 at 21.5 psi. this is on 91 octane, so i am positive there is more "power on the table". There are a few things Jeff and I talked about in order to push the setup a little further with a simple hardware change and some small tuning things.
Hopefully we talked about WI! 91 octane guys really need this to use that big turbo and make big power!
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Old 02-16-2011, 11:33 PM   #304
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Originally Posted by PERRINJeff View Post
Looking back last year we were ready to make a big change in our kits for the PT turbos(v-band housings), or Tial housings or Garret v-band housings, you name it we tested it, but what it came down to was performance. The GT turbos and housings were really the best setup. PT were less powerfull and less responsive, i tested Tial housings and besides the fact they are freaking awesome looking they do perform the same. We felt there was no reason to add cost for no HP gains. What i am saying is, i agree!
Hey Jeff i actually choose the Tial v-band 0.82 rear exhaust housing to go alongside my recently acquired GTX3076R, you mention above that there is no difference in tests, I am presuming you mean no difference in tests for the older GT3076 version. Would the change in rear exhaust inducer and exducer on the GTX3076R make more efficient use of the Tial v-band housings?

Mind you i will be tuned on E85, and a built bottom end with highly ported race head with kelford 264 cams, so i wouldn't imagine anything will be restricting its VE. Having said that how much more whp is available with such a setup based on your tests?
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Old 02-18-2011, 01:49 PM   #305
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I mean the Tial housings responded just like the GT housings. I did a test a while back that was about a week a part and the Tial housing didn't change the HP or spool. That is what i meant. So to answer your question about the Tial making more power, the answer is no, it just gets you the really nice v-band connections.

On your other question, as long as your Rev to 8000RPM, i can see you hitting 550WHP. That might be pushing it, but the turbo can flow the air to do that. The only thing is you may end up wanting the 1.02ar housing. But i wouldn't do that until you at least tune it one time.
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Old 02-22-2011, 03:49 PM   #306
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Hi,thanks for the testing. Did you manage to test the standard gt3582 vs gtx3582 as far as response and power goes?
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Old 03-05-2011, 01:31 PM   #307
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Quote:
Originally Posted by PERRINJeff View Post
I mean the Tial housings responded just like the GT housings. I did a test a while back that was about a week a part and the Tial housing didn't change the HP or spool. That is what i meant. So to answer your question about the Tial making more power, the answer is no, it just gets you the really nice v-band connections.
Hi Jeff,

just a question, what changes did you do (and I do not mean the obvious ones ) on your exhaust system when changing between the GT housing and the Tial housing?

Thank you for sharing all your findings while testing, really informational stuff!
/M
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Old 03-06-2011, 09:33 PM   #308
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Anyone looking for GT35 Tial housings? I have a .82 and 1.06 housing I need to get rid of..
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Old 04-16-2011, 01:35 PM   #309
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jeff trying to get in touch with you about a turbo but cant pm you.???????
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Old 04-18-2011, 10:18 AM   #310
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GTX3071R.... anyone try one of these??

(hoping gt3076r power with gt3071 spool)
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Old 04-18-2011, 05:20 PM   #311
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Quote:
Originally Posted by sumfoo1 View Post
GTX3071R.... anyone try one of these??

(hoping gt3076r power with gt3071 spool)
I'm very tempted to buy one but fear it wont make much if anything more than a gt3076. Spool is going to be marginal to the gt3076 imho, i really hope i'm wrong though.

I'll probably end up going the gtx3076 just to be sure i'm going to make gains. Unless the efr7064 pulls off some magic.
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Old 04-18-2011, 07:19 PM   #312
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yeah i really want a ts 7064 or 7670 but dayummm 3500 just for hot side piping is a friggin lot.
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Old 05-06-2011, 05:01 PM   #313
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guys.. got 3 questions:

1-what would you expect for a GTX3076 .63ar on my 07 EJ257 WRX on 95 octane?

2- isn't worth it to have .63ar over .82 as .63 will spool 350 rev faster, for just 20-25 whp?

3- If we compared .63 and .82 on a quarter mile run, who will win?

I'm a street guy considering drag racing in the near future : )

Last edited by saffarco; 05-07-2011 at 02:49 AM.
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Old 05-07-2011, 04:03 PM   #314
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I'm thinking about going with the GTX3076R on my built, destroked 2.35L WRX. :P looks promising.
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Old 05-08-2011, 10:45 PM   #315
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why is it that the production of these are so low? perrin doesnt even have them in stock
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Old 05-08-2011, 11:35 PM   #316
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The demand is high.

C
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Old 05-08-2011, 11:39 PM   #317
jkelz25
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when i was on the phone with perrin he did tell me the demand was high but he said that garret is not making many of them?
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Old 05-28-2011, 06:30 PM   #318
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Just following up on my earlier post, i ended up getting the GTX3076R with 0.82 tial ext, because of Jeffs great and informative results in this thread. This is just the run in tune with 20psi of boost, ran out of IDC and MAF, but there is a bit more in it. Just need to upgrade my fuel setup.


My build thread is here:
http://forums.nasioc.com/forums/show....php?t=2164033
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Old 05-28-2011, 08:27 PM   #319
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368 crank hp for the US People.

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Old 05-28-2011, 08:40 PM   #320
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Quote:
Originally Posted by SubaruWrxNewb View Post
I'm thinking about going with the GTX3076R on my built, destroked 2.35L WRX. :P looks promising.
I'd like to see how that works out with the smaller exhaust wheel and high RPM.
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Old 05-28-2011, 09:01 PM   #321
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Originally Posted by Clark Turner View Post
368 crank hp for the US People.

C
Think it's 368whp and is only run-in tune.
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Old 06-07-2011, 11:05 AM   #322
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Are any of the GTX turbos made in a stock-location like the ATP turbos?

What do you guys think of either the GTX3071 or GTX3076 (or the GT3071 or GT3076 if the GTX isn't available in stock location) on a 9.2:1 compression 2.5L for an autocross car? I'm woried that the response of the 30r may not be enough. Havn't driven in very many high compression/smaller turbo Subarus to see really how the extra compression affects response...however, in other cars, it seems to do really well.

I know in our texas mile car, the added compression made a huge difference in off-boost torque, but with a 40r on it...it's hard to get a good comparison that way.

Also wondering if this turbo is going to be too big for my Perrin top-mount. Trying to keep from going to a front mount due to the pressure drop and classing rules in SCCA. Sorry if this is a thread-jack. Just figured all this good GTX info could spark some good advice.

Last edited by Squidz; 06-07-2011 at 11:27 AM.
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Old 06-07-2011, 11:14 AM   #323
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gtx3071 i have a feeling will act like a gt3076 almost exactly... it actually out flows it a little but no tests to prove that.

The gt3071 will be a fast spooling turbo but still may be a little big for the die-hard autocross enthusiast. What power levels are you looking for?

what are you planning on running for fuel & boost. Big turbos at low boost work fine with tmics , big turbos with e85 also work fine with tmics.
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Old 06-07-2011, 11:57 AM   #324
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ATP hasnt released the gtx stock location turbos yet.....

But blouch has a large catalogue of stock location billet wheel'd turbos, journal and BB options, and 7,8 and 10cm turbine housing options.

Pretty much any flow rate you want between 44-65 lbm
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Old 06-07-2011, 01:09 PM   #325
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Quote:
Originally Posted by sumfoo1 View Post
gtx3071 i have a feeling will act like a gt3076 almost exactly... it actually out flows it a little but no tests to prove that.

The gt3071 will be a fast spooling turbo but still may be a little big for the die-hard autocross enthusiast. What power levels are you looking for?

what are you planning on running for fuel & boost. Big turbos at low boost work fine with tmics , big turbos with e85 also work fine with tmics.
Honestly, would like around 400 WHP. Will be runing E85. Boost level really doesn't matter...whatever the turbo needs really. The motor is way overbuilt for what i'm doin with it so i can run a lot of boost. As stated before, i'll be runing a Perrin top-mount intercooler and would prefer stock-location.

The info on this thread really got me thinking about the 30r's. Huge thanks to the guys and gals over at Perrin for gettin gthis going.

Quote:
Originally Posted by Phatron View Post
ATP hasnt released the gtx stock location turbos yet.....

But blouch has a large catalogue of stock location billet wheel'd turbos, journal and BB options, and 7,8 and 10cm turbine housing options.

Pretty much any flow rate you want between 44-65 lbm
Was looking at the Blouch 20g's earlier...ball bearing, billet wheel. Thought a 20g might be a bit small for my desired power level.

Ultimately, if i have to give up power for respnse, i will. I can go with a smaller turbo and get 340 or so...but i'd really like to find the best compromise. The high compression motor should be pretty good off-bost, so i'm up for trying something a bit bigger.

You guys think i should be looking in the HTA68/20g range? Maybe a Dom 1.5?

Last edited by Squidz; 06-07-2011 at 01:14 PM.
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