Pte
5557
5957
5963

 

thanks, will compare flow maps

 

There are a few versions of the GT30R including the GT3071R (53.1mm comp inducer) rated at 480HP and GT3076R (57mm comp inducer) rated at 525HP. I assume you were referring to the GT3076R with your posted HP rating. In addition, Garrett has the GTX3071R Billet (54.1mm comp inducer) rated at 560HP and the GTX3076R Billet (58mm comp inducer) 640HP.

Garrett Options:
-GT3071R (53.1mm comp inducer) 480HP
-GT3076R (57mm comp inducer) 525HP
-GTX3071R Billet (54.1mm comp inducer) 560HP
-GTX3076R Billet (58mm comp inducer) 640HP

Alternatively, there are a few Precision offerings that are available in both journal bearing or Waterless DBB depending on your price range.

Precision Options:
-Precision 5557 Billet (55mm comp inducer) 535HP
-Precision 5857 Billet (58mm comp inducer) 605HP
-Precision 5862 Billet (58mm comp inducer) 615HP
-Precision 6057 Billet (60mm comp inducer) 630HP
-Precision 6062 Billet (60mm comp inducer) 650HP

There are more beyond that. The beginning of the 60mm range enters the GT35 realm, I honestly wouldn't go much smaller than a GT35R sized single on the 2JZ. With the displacement of the 2JZ, you're basically going to just choke it. The Precision 5857 Billet would be interesting to see by itself for sure.

Reid

 

The 59mm turbos I excluded due to the older cast designs, I stuck to the Billet wheels, but here they are anyway:

Precision CAST offerings:
-5457 465HP
-5557 495HP
-5757 540HP
-5857 570HP
-5865 570HP
-5957 585HP
-5962 595HP
-5965 600HP

Reid

 

Reid, Dont most gt30's have an optional 1.06 exhaust? would it still choke a 3.0?

 

Choke is a relative term. It wouldn't choke it more then the stock twins would, which is the area you're looking for. For 430whp on pump gas I think a GT30 with a large back housing would be perfect. You'll probably make more torque then power though and the top end will be lacking from the high exhaust manifold pressure. I suspect the powerband would be ~ 3500 to 6000 similar to twins.

edit: I think the Garrett 1.06 housing comes in T4?

 

I gotta tell you I bought an sc300 with 2jzgte swap and pt6265 and even though I've read it many times I was still amazed at how fast it spooled.

I'm gonna swap that puppy over to my supra and put a slightly smaller turbo on the SC - after looking at reids list probably something in the 58-60mm billet range since I won't be upgrading the fuel or tranny on the SC.

Just had to put my $.02 in that the billets are awesome and you will not be disappointed compared to stock twins.

 

Thats pretty much what Im looking for, more tq than HP. its a GS, I dont expect this boat to go hiigh speeds for any length of time, but I guess it would be nice to be able keep up with an e60 M5 till 130ish or so

 

I don't know where all this talk of choking comes from? I've seen numerous people fit gt35r turbos with .63 hot side and everyone said it's too small it will choke. It didn't. Another couple of guys I've spoke to fitted gt3076r with .63 hotsides, one again all the comments came in about choking.... It didn't choke. Myself I put in a comp turbo 5858 t3 turbo and some people told me the choking thing also. It didn't choke. Although there is some restriction which I am yet to diagnose, either the catalytic convertor and/or leaking external wastegate but am still making an easy 500whp right now.

 

^^^ I believe this guy because the smallest gt30 is ok for a 3.0 according top Garrett http://www.turbobygarrett.com/turbobygarrett/catelog/Turbochargers/GT30/GT3071R.htm

madhay. do you have a dyno chart?

 

BL's 67 kit spools almost identically to the twins in parallel mode, but keeps climbing to make more power.

 

^ I think that's the ambiguity for most people and it comes down to pure preference. Some people may feel twins in parallel aren't bad at all on lag but myself and many other ABSOLUTELY despise the lag. It is SO fricking bad... especially if you accidentally shift a gear too early... the car just completely bogs down until 3000rpm.

I come from a NA 6 ITB straight 6 motor (s54 M3) so lag and shitty engine response is definitely something I'm trying hard to get used to. I'll be looking for a small single or a large with a QSV to solve my problems hopefully.

 

Are there any small single dynos? Only I've seen are around 60mm.

 

sounds like you need one of the new EFR turbos.. quote from Full Race

"1) EFR 7064 .92 a/r -- this is an ultra-responsive turbo that can make up to 500whp at full tilt. Weve had requests for this turbo from professional drifters who require instant throttle response. Spoolup is faster than stock twins. this turbo is designed to murder the 3071R, but i dont know any 2jz guys who run a turbo that small

2) EFR 7670 .92 a.r -- If you wanted stockish spool, but more top end than the 7064 can support - this is the way to go. It is designed to have the same top end as a 35R (the 600whp level you are looking for) but spool as fast or faster than a 3076R. It's still a great match to the stock motor and lightly modified fuel system.

These turbos in a .92 a/r use a 42mm dual internal wastegate which makes the same power as an external wastegate - but far less noise, complexity and weight than an external WG configuration. The EFR integrated BOV will allow you to get rid of the HKS SSQV - however the EBC will interface directly with the EFR solenoid (or you could use your EBC solenoid and remove the EFR unit, up to you)

The singlescroll EFR turbos continue to arrive, but twinscroll ship dates are looking like mid march. the twinscroll housings were the last to go into production and are taking the longest. BW tells us they will have excellent supply later in 2011"

 

I also read that post ^^^ however did you see what someone followed on with? We really need to see a dyno chart on a 2jz before we spend our money. See at the very bottom here.

Dyno charts of smaller GT30R and GT35R doing well. See this thread on page 10. And this thread on page 22 mid way down, GT30R made 18psi at 3200rpm. See this thread on the aussie forums. Everyone said the choking thing at first, and then the people who actually had the small ar setups spoke up from personal experiences. One guy had a gt3540 on his car with a 0.50 compressor cover and a .63 exhaust housing, made 337 rwk at 5800rpm when the power starts to drop off, it had 22psi of boost at 3200rpm and 14psi at 2800.

As for my dyno, well as I said something is restricting it, which is leading to late boosting, unfortunately I am out of $$ and it will have to wait.... but here it is in its current yet to be fixed form.

Dark lines indicate current tune from 58mm comp turbo.

 

Are u making 280 foot lbs at 3k?

EDIT. nevermind it seems 280Nm is 206 foot lbs, thank you for post. it seems the 30r is most likely the way to go.

 

Once i sort out the late boosting issue, the whole torque powerband will hopefully shift 1000rpm to the left. From other setups I have seen this is what it should be doing.

 

I had a couple other comments, but I want to just post this at the moment for lack of time.

300wtq @ 2800rpm with a 6265 Billet, Quick Spool Valve, Treadstone cast manifold, and ProEFI tuned on E85.

Reid

 

OP also said he doesn't want to upgrade his fuel system which is why he wants a smallish turbo. But it's great this post came up as I am also looking for a nice, quick spooling turbo for a fun street and track (road course) set-up to replace the old-schhol T62-1 I have waiting to be installed

 

Speaking of "Old skool" turbos I think there is a lot to be said for the 60-1 or 62-1 turbos on a purely stock fuel, pump gas (93), and low boost (20-21 psi), stock engine. Seems the new turbos all lack on the surge line, but are geared to make 30+ psi boost, which definitely isn't how a 60-1 is designed to work. But I'd LOVE to see a 60-1 dual ball bearing on a stock engine and 93 pump gas on a cast manifold...I do believe this setup is in my car's future, because I would likely NEVER put racegas or spend the money converting to methanol with my car (that I like to drive all over with)

Has ANYONE got dynos of this setup?

Thanks,
Patrick

 

Info in here is great for plans at the end of the year.

 

I'm looking for a turbo that can make boost as fast as the stock twins in sequential for my auto DD. Power goals would be 425-450whp with the stock auto. It can be done on stock twins, but a single will do it easier, what do you guys suggest?

 

Faster then the 35R? What about a qsv on a 35r? I think a qsv or a tiny turbo like the 30r is or only chance for response that fast while maintaining any decent hp. I dont think you'll match the stock twins in sequential no matter what you do though to be honest. Its a single 200whp turbo with a powerband of 2000-3500...

 

I would say go with something like a Precision 57mm.

 

Wait a few weeks and see Mine.

5862 billet + T4 QSV + GSC S1 cams... aiming for 600whp with full boost at 3500rpm.

This is pump/meth too. If I was running E85 the response would be even better.

 

Eager to see how you go with this (will be looking out for it on the aus forum).

I'm looking to go the cast manifold with a pte billet 5862 and QSV (car already has tomei 264 cams). Will also be able to go e85 if want (shit you cant get it over in w.a)

 

^.....I was about to say there was a member makin fullboost at 3500 wit a pte billet then I remeber it was it you. 20psi at 3500 can't go wrong with that

 

It's actually a comp turbo, but similar specs to the PT, so I'd imagine it would be quite similar power.

Yes it makes 21psi at 3500rpm now on pump, so with the new larger T4 housing + QSV + GSC cams, it should go even better.

 

55mm sounds interesting, look forward to seeing your results.

 

precision billet 5857 has the same spool time with the 55mm billet but can make more hp.so 55mm goes to trash.

 

Any experience with it, or have you seen it anywhere?