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Old 09-15-2013, 07:00 PM   #1
Evans609
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Default Gt3076r or 1.5xtr

Hey everyone,

I was doing some research and I'm down to 2. I was just looking for some experience with either of the turbos. Or opinions. Everything helps. The 2 turbos are either a Garrett GT3076R or a Blouch 1.5XTR. I'm looking for around 430whp with the help of meth injection and I want to keep it pretty responsive.

Thanks,
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Old 09-15-2013, 07:14 PM   #2
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One is rotated the other one is stock location...
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Old 09-15-2013, 07:56 PM   #3
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Quote:
Originally Posted by DavC825 View Post
One is rotated the other one is stock location...
Uhm, wrong.
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Old 09-15-2013, 07:57 PM   #4
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Quote:
Originally Posted by DavC825 View Post
One is rotated the other one is stock location...
You can't get a 3076r in stock location??
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Old 09-15-2013, 08:01 PM   #5
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you can get a gt3076 in stock location
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Old 09-15-2013, 08:03 PM   #6
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you can get a gt3076 in stock location
I thought so. Any opinions on either of the turbos?
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Old 09-15-2013, 08:36 PM   #7
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Blouch 2.5xtr is stock location 3076r iirc.
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Old 09-15-2013, 08:51 PM   #8
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This thread should be in the build forum not hear in PPB. Post it over there.

A Dom 2.5xtr is not like a 3076, it's like a 3071 and the OP should consider that one also as it's inn between the two.
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Old 09-15-2013, 10:37 PM   #9
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i have a perrin rotated 3076r .82 with a bit of porting, it's alright, still not very responsive for street imo, bit of lag and go. loud ass turbo tho, my friends love the sound of it. makes 380whp on 93 pump at 20psi, top end is nuts, car keeps going! on a bone stock 257
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Old 09-15-2013, 11:08 PM   #10
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I don't think you'll get to 430whp with the 1.5xtr with meth. With E85 most people aren't hitting much more than 420whp or so at around 26psi.
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Old 09-15-2013, 11:11 PM   #11
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with a built motor you can, just bc the tune can be a bit more aggressive.
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Old 09-16-2013, 03:32 AM   #12
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Quote:
Originally Posted by manitou View Post
This thread should be in the build forum not hear in PPB. Post it over there.

A Dom 2.5xtr is not like a 3076, it's like a 3071 and the OP should consider that one also as it's inn between the two.
Great thanks!
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Old 09-16-2013, 03:34 AM   #13
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Originally Posted by pet3r View Post
I don't think you'll get to 430whp with the 1.5xtr with meth. With E85 most people aren't hitting much more than 420whp or so at around 26psi.
I'm just estimating. My tuner actually hit 416whp with a 20g and meth at 25psi. My engine is built it just has CP pistons
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Old 09-16-2013, 05:52 AM   #14
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I just went from 1.5xtr to gtx3076r. 1.5xtr acts like gt2871 and i dont think it would hit 420whp because blouch indicates that turbo is capable for 480 crank hp which is equivallent to 350-360ish wheel hp on their website, but its a street-wise turbo with great response (you are running 2.0 or 2.5 engine?), even on my old bone stock ej207 engine. 3076r is much bigger than 1.5xtr, to be honest its a bit laggy on the street, but its easily making much more power, esp on top end.

to 04wrx008
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Originally Posted by 04wrx008 View Post
Blouch 2.5xtr is stock location 3076r iirc.
dom 2.5xtr=3071r
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Old 09-16-2013, 06:02 AM   #15
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Quote:
Originally Posted by hummelsubaru View Post
I just went from 1.5xtr to gtx3076r. 1.5xtr acts like gt2871 and i dont think it would hit 420whp because blouch indicates that turbo is capable for 480 crank hp which is equivallent to 350-360ish wheel hp on their website, but its a street-wise turbo with great response (you are running 2.0 or 2.5 engine?), even on my old bone stock ej207 engine. 3076r is much bigger than 1.5xtr, to be honest its a bit laggy on the street, but its easily making much more power, esp on top end.

to 04wrx008

dom 2.5xtr=3071r
Is there an echo in here? Hahaha

There is a good spread in power and driving characteristics between the 1.5xtr and like an ATP gtx3076 / Dom 3xtr. The Dom 2.5xtr might do the trick for you.
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Old 09-16-2013, 06:19 AM   #16
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Quote:
Originally Posted by hummelsubaru View Post
I just went from 1.5xtr to gtx3076r. 1.5xtr acts like gt2871 and i dont think it would hit 420whp because blouch indicates that turbo is capable for 480 crank hp which is equivallent to 350-360ish wheel hp on their website, but its a street-wise turbo with great response (you are running 2.0 or 2.5 engine?), even on my old bone stock ej207 engine. 3076r is much bigger than 1.5xtr, to be honest its a bit laggy on the street, but its easily making much more power, esp on top end.

to 04wrx008

dom 2.5xtr=3071r
I'm running the 2.5L. It's a 2012 sti. Ok so in comparison to the 1.5xtr the 2871 would be close to the same as that? I know what the turbo is rated for but I'm just going by what my tuner makes in his sti is all.

Last edited by Evans609; 09-16-2013 at 07:12 AM.
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Old 09-16-2013, 06:20 AM   #17
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Quote:
Originally Posted by manitou View Post

Is there an echo in here? Hahaha

There is a good spread in power and driving characteristics between the 1.5xtr and like an ATP gtx3076 / Dom 3xtr. The Dom 2.5xtr might do the trick for you.
So do you know what the spooling is like on the 2.5xtr? Cause like I said I would like a pretty snappy setup. Thanks
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Old 09-16-2013, 07:17 AM   #18
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Better than the 3076/ Dom 3! Do a search on the 2.5 here. There's plenty of them out there. Look at the blouch site.
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Old 09-16-2013, 07:48 AM   #19
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Quote:
Originally Posted by Evans609 View Post

I'm running the 2.5L. It's a 2012 sti. Ok so in comparison to the 1.5xtr the 2871 would be close to the same as that? I know what the turbo is rated for but I'm just going by what my tuner makes in his sti is all.
I think they're the same wheel pairings. The rotated version will have more potential with similar spool. The 2.5xtr has the 60mm turbine wheel so it's a 30r cartridge.
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Old 09-16-2013, 08:25 AM   #20
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Originally Posted by manitou View Post

I think they're the same wheel pairings. The rotated version will have more potential with similar spool. The 2.5xtr has the 60mm turbine wheel so it's a 30r cartridge.
Ok perfect thanks. So for brand name wise what would be your choice? And do you know of any figment issues? I know blouch makes a beautiful turbo
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Old 09-16-2013, 08:38 AM   #21
manitou
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Stock location, Blouch especially in the 20Gxt, 1.5 xtr to 4 xtr sizes.
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Old 09-16-2013, 09:44 AM   #22
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Quote:
Originally Posted by manitou View Post
Stock location, Blouch especially in the 20Gxt, 1.5 xtr to 4 xtr sizes.
Perfect. You've been a lot of help. Thanks
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Old 09-16-2013, 09:45 AM   #23
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Originally Posted by manitou View Post
Stock location, Blouch especially in the 20Gxt, 1.5 xtr to 4 xtr sizes.
Also you recommended that I get the 2.5xtr?
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Old 09-16-2013, 10:20 AM   #24
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Well I don't really want to recommend what you should buy but I'm trying to help you with the info. Only you can decide what will be right for your needs!

What I was saying about Blouch's turbos is that they have the best reputation with the turbo's from the 16GXT all the up through the Dom 4XTR and everyone in between. You don't see that many people using the Dom 5XTR or even that many Dom 4XTR's. There are a bunch of Dom 3's, 2.5's and 1.5's in use. I think that once you get up to a 35r size or bigger then it make way more sense to rotate the turbo and take advantage of all the turbine housing offerings and the better and more efficient compressor housings.

The Dom's xtr's match up to SL Garrett's like this
2.5xtr = gtx3071 (71mm comp wheeel, 60mm turbine wheel)
3.0xtr = gtx3076 (76mm comp wheeel, 60mm turbine wheel)
3.5xtr = <gtx3576 (close, Garrett uses a 68mm turbine wheel and Blouch use a 64mm TW)
4.0xtr = <gtx3582 (82mm comp wheel but 64mm turbine wheel)
5.0xtr = gtx3582 (I can't recall if the 5.0xtr has a 82mm CW but I know it has the Garrett 68mm turbine wheel)
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Old 09-16-2013, 10:58 AM   #25
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this is a no brainer, don't go with the 3076 stock location unless your only planning to run pump gas, it wont affect much in this case & you could go this way, for wanting potential for more power on meth/e85 or race gas, it will need to breathe better, so go rotated 3076 .82 hotside in this case, its what ive had for 5 years & love it, would never go bigger or smaller, spools around 36-3800 on my sti (2.5l) & doesn't start to drop power until just about stock redline at 7, got an 11.2/127 with practically no experience launching, no launch control, building boost at around 5500 & dumping the clutch during one of the blurps of throttle, smoking everyone around with stock clutch/trans/motor on 18's with -3.25 camber & also some toe in (road race settings)

you wont be dis-appointed going this route, many go with stock location because they say its simplier or don't want to replace the aftermarket downpipe they already have, its really no more money & you will only benefit, more room for install & working on things, happier parts all working together, when my car ran best it was all simple, just an AP, fuel pump, injectors, fmic, & a tune, put me up over 450whp lasting for years (35k miles on top of the 22k my car had on it at time of install, pulled motor from slightly low compression, still had life left
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