Where can I get these? Besides from Andreas....

I carry the Garrett GT Series Ball Bearing turbos which have pretty similar specs. They are awesome turbos for the money!

Is there a Garett ball-bearing turbo that is similar to the Incon GTBB37 or the HKS 3037?

Here are the Specs on the Garrett GT25's:

T28
.64 A/R Turbine Housing
76 Trim Turbine

T04S
.70 A/R Compressor Housing
48 Trim Compressor Wheel

or

T28
.86 A/R Turbine Housing
76 Trim Turbine

T04S
.70 A/R Compressor Housing
48 Trim Compressor Wheel

These are Ball Bearing turbos. These turbos will fit onto the Pulsar GTiR Manifold.

If you are interested in these turbos, feel free to contact me @ louisanaya@hotmail.com

I'm assuming these are internal wastegated turbos, correct?

Forgive me for the questions, as I'm no turbo expert...so is the GT25 really comprable to the 3037? A couple of people I've talked to that have the GT25 said it spools a lot slower than a regular T25 or T28...that it doesn't really make good power until higher rpms (4000 - 4500); however, they've said the highend is impressive. What do you think about this Louis? Or anyone else for that matter?

Originally posted by g20ps
Forgive me for the questions, as I'm no turbo expert...so is the GT25 really comprable to the 3037? A couple of people I've talked to that have the GT25 said it spools a lot slower than a regular T25 or T28...that it doesn't really make good power until higher rpms (4000 - 4500); however, they've said the highend is impressive. What do you think about this Louis? Or anyone else for that matter?

I don't like these turbos.... They have too big of a compressor for the size turbine they run. The T30R listed in Garrett's aftermarket catalog is similar to the HKS GT3037, but not quite as good.

Rob

With a T28 Turbine shouldnt the turbo spool pretty quick like a T28, and with the T04 Compressor make good top end? The ones Loius listed seems like the OEM Nissan Hybrid: GTIR T28 Turbine with the S15 Compressor housing... I figure this would be comparable to that combo which is supposed to be good.

I'm looking for something thats good on the street, spools up quick, but makes good top end. I need it to be a daily driver as well as a weekend warrior. I'm not looking to beat all out but I wanna be a contender.

I plan to put in some S4's in the next few weeks and a 2.5 catback soon after that. I hear you need a big turbo for those cams.

Originally posted by ClassicSE-R


I don't like these turbos.... They have too big of a compressor for the size turbine they run. The T30R listed in Garrett's aftermarket catalog is similar to the HKS GT3037, but not quite as good.

Rob

Just to clarify,

The Garrett T30R is the Garrett GT30. Just wanted to make sure that people understand that we are talking about the same turbo when I say GT30 and Rob says T30R.

The Garrett T30R/GT30 has a T3 turbine housing whereas the HKS GT3037 has a T28 turbine housing.

Rob, I am not sure how the specs can be the same when we are not comparing Apples to Apples? Wouldn't the GT25/T25R be equivelent to teh HKS GT3037 for thsi reason?

Originally posted by TurbochargedSER

The Garrett T30R is the Garrett GT30. Just wanted to make sure that people understand that we are talking about the same turbo when I say GT30 and Rob says T30R.


Yep. The model designation I am using is out of Garrett's aftermarket catalog. Others may be using different names. I mean turbocharger part number 705867-1 through -3 and 714569-1 through -3.


The Garrett T30R/GT30 has a T3 turbine housing whereas the HKS GT3037 has a T28 turbine housing.


The HKS GT3037 doesn't have a T28 housing. It has a turbine housing that was designed by HKS and supplied by ??? All I know is that Garrett sells HKS the turbo minus the turbine housing. The turbine housing has a footprint that is the same as a T25/T28. However, it is not a T28 housing. The HKS housings use an A/R distribution that does not line up with standard Garrett product. Garrett uses 0.48 (I think), 0.64, and 0.86 A/R distributions in the T-25/28 line. HKS uses a 0.61, 0.73, 0.89 distribution. Those didn't come from Garrett, AFAIK.

Rob, I am not sure how the specs can be the same when we are not comparing Apples to Apples? Wouldn't the GT25/T25R be equivelent to teh HKS GT3037 for thsi reason?

No, you've got to look at wheel sizes to do a proper comparison. The Garrett GT30/T30R uses a 60mm inlet diameter, 84 trim UHP turbine wheel with a dual ball bearing. This is exactly the same aero specification used in the HKS GT3037. It's the same exact turbine wheel. The HKS GT3037 uses a 48/52/56 trim 76.2mm exducer diamter BCI-18C compressor wheel, while the Garrett GT30/T30R uses a 52/56 trim 76.2mm BCI-2 compressor wheel.

The BCI-18C is a better compressor wheel than the BCI-2, which puts the HKS GT3037 out in front of the T30R in my opinion. Also, the HKS GT3037 comes in 0.61, 0.73, and 0.89 A/R's on the turbine side, while the T30R comes in 0.63, 0.82, and 1.06 A/R. I personally think that the 0.63 is a little too small, and the 0.82 is a little too big. I think that HKS's 0.73 A/R is *just right*. Plus, it bolts up to a GTi-R exhaust manifold without having to put a new flange on it.

Personally, if I had an F-Max manifold, I might choose the T30R. If I had a GTi-R manifold, I would choose the GT3037.

Originally posted by civicdragon
With a T28 Turbine shouldnt the turbo spool pretty quick like a T28, and with the T04 Compressor make good top end? The ones Loius listed seems like the OEM Nissan Hybrid: GTIR T28 Turbine with the S15 Compressor housing... I figure this would be comparable to that combo which is supposed to be good.


Nope. That's a very common misconception. The spool-up of the turbine has a lot to do with it's efficiency. The turbine is attached rigidly to the compressor, and therefore is stuck spinning at the same speed the compressor spins at. There is a critical relationship between how fast you spin a turbine and how much work you extract from it. If you spin a turbine too slow or too fast for the amount of work you are expecting it to provide, the turbine's efficiency will suffer. If its efficiency suffers, then it will suffer from poor spool-up.

Read Jason Kavanagh's excellent article that appeared in SCC a month or two back. It was in the 'Performance Dictionary' section.

He has turbine maps of the T-28 driving both a 60 mm and 76.2mm compressor wheel. You'll see the huge drop off in turbine efficiency forcing the small turbine to drive the large compressor creates. It's due to speed-mismatch. You are trying to extract a lot of work from the turbine wheel without spinning it fast enough.


I'm looking for something thats good on the street, spools up quick, but makes good top end. I need it to be a daily driver as well as a weekend warrior. I'm not looking to beat all out but I wanna be a contender.


Disco Potato turbo. 300 whp with the spool-up of a T-25. It doesn't get any better than that!

Is the horse power rating on this turbo correct?

GT35R Roller Bearing Turbo (700hp)
T04S Compressor (56 Trim) .70 A/R
T3 Turbine Housing (84 Trim) .82 A/R
60 lbs/min

Thanks
Chris

Ok... what I'm interested in... is is the GT25 a POS or.. a decent turbo? I am getting the larger one with the .86 A/R exhaust housing.. I mean... will it make good power? Or will it not make shit? I think people spend way too much time worrying about how "good" a turbo is. Hell.. if you have any one of the INCON, HKS or Garrett turbos mentioned here... they've all gotta kick ass!? So.. what's the story.. The GT25 is 600.00 or so less than the INCON... so.. is it worth it for 380-400whp?
Travis

Travis, that is exaclty what we all want to know. If the GT25 can get decent spool and pretty good top end, what is the problem. I guess we will see cause aren't you testing one out soon?

BRent

*smiles*

I thin kyou can only get the incon from Andreas since from what I have researched INCON is out of biz. He must have a bunch just chilling or know something else we don't. I will be doing somemore research on this.

Also Rob I sent you a PM, if you could get back to me that would be cool

you can get them from Jason too... www.jgycustoms.com

Yeah Jason just told me he has some and still lists them on the website. He has been the true backer of the Incon unit.

Brent

http://www.jgycustoms.com/bb37.htm

jason site. and he's says it fit the bb manifold. so does it clear the block, or does he gring the block?

Brian

i think JGY gets them from Andreas or High Performance online, although I may be wrong.