GTI-R T.28 for swap or Sale

Phinx · Post by **Phinx** » Thu Dec 28, 2006 9:39 am

I'm parting with my T.28.

Looking for somthing with less lag.
I am willing to swap for a T.28 off an S/r. Sorry I have changed the price
The unit has been fully reconned
Will post pic's later

widowmaker · Post by **widowmaker** » Thu Jan 04, 2007 11:24 am

how much lag are we talking about?

i rather like lag...
its like the night before Christmas - the promise of something fun to come

what else do you need to fit to ca18?

Phinx · Post by **Phinx** » Mon Jan 15, 2007 9:31 am

Sorry about the late reply guys. Sorry I have changed the price because the turbo im looking at getting has increased.
This turbo is a direct bolt on the turbo is missing a waste-gate actuator; the stock unit on the Ca18det can be used. The turbo has been clocked and modified to fit the 3 bolt up pipe and (Ca18det) actuator. Full boost will only happen at around 4000RPM but the turbo can hold any boost setting up to around 1.2 bar till redline.

The Turbo has been fully re-coned and a 360 degree thrust bearing fitted to allow higher and more consistent boost. ,The turbo hasn’t been used.

I have attached some stats

Spec's on the turbo:

Factory Nissan Pulsar GTiR T28
.86 A/R Turbine Housing
79 Trim Turbine
.60 A/R T3 Compressor Housing
60 Trim T3 Compressor Wheel
Compressor Flow: 33 LB/MIN
465997-0004

Compared to the Garret GT28R.

Garrett GT28
Ball Bearing Center Section
T25
.64 A/R Turbine Housing
62 Trim Turbine
T3
.60 A/R Compressor Housing
60 Trim Compressor Wheel
Compressor Flow: 31 LB/MIN
466541-0001

Please PM me for price. It will be reasonable. Will include pic’s shorly

Vlade · Post by **Vlade** » Mon Jan 15, 2007 2:06 pm

Do you think one will be able to build a hybrid?

Current T25 mixed with that T28?

Phinx · Post by **Phinx** » Wed Jan 17, 2007 9:05 pm

To be honest I don't know.
The spool isnt that bad , its good for 300 whp plus i hear.
I have a sweet deal on a t28 of a SR which is better on a lightly tunned CA.

I want R 3000 as is.which isnt bad.

qewrty · Post by **qewrty** » Wed Jan 17, 2007 10:20 pm

Phinx wrote:To be honest I don't know.
The spool isnt that bad , its good for 300 whp plus i hear.
I have a sweet deal on a t28 of a SR which is better on a lightly tunned CA.

I want R 3000 as is.which isnt bad.

I have a SR20DET, could this replace & be an improvement over the stock S14 turbo? If so I might be interested..

Dislex666 · Post by **Dislex666** » Thu Jan 18, 2007 10:43 am

I also had/have one of these - needs a rebuild (So not trying to steal a sale

)

Anyway - I made 293hp at the crank at 1 bar on it.

So i doubt you'll get 300whp off it. Notunles you use serious meth injection, and you live at the coast and you put 102.7 all the time

IIRC they flow for 320hp with the stock comp housing - if like mine you have the T04B housing off the stock S14 item, they can flow for like 330hp

(that's still crank - at low altitude with nice juice)

PS. nice juice != 95

Phinx · Post by **Phinx** » Fri Jan 19, 2007 8:20 am

Hmm. OK what Dislex said.

To my understanding it will be an Improvement. But maybe it better if you do some net research before.

I don't want to sell you some thing thats not going to meet your needs.

Phinx · Post by **Phinx** » Fri Jan 19, 2007 9:15 am

Here is an honest post from www.nissanperformancemag.com

http://www.nissanperformancemag.com/august02/ask_sarah/

Q: I'm currently at the end stage of building my Pulsar SSS (Australia). The Pulsar SSS comes stock with an SR20DE. I have removed my N/A motor and installed an SR20DET from a Bluebird SSS in it. The turbo that came stock on the motor was a tiny Garrett built thing. I believe it's a T25. I removed that and replaced it with a T28 from an S14 200SX (240SX in the U.S). The engine has pretty much all the external goodies- it sits on Nismo Heavy Duty engine mounts, has 520cc injectors, custom fuel rail, Bosch Motor Sport Fuel pump, front mount intercooler, bored out throttle body, match ported and polished exhaust manifold and turbo housing, WOLF 3d Advanced Engine Management System, etc..
1) Does a change to the T3/T4 hybrid turbo make that much a difference;
2) What kind of boost levels and hp could I expect with that turbo;
3) Is there a significant power loss if I didn't buy the ball bearing turbo?

A: The T28 will spool quicker than a T3/T4 Hybrid because it is has smaller compressor and turbine wheels with less inertia, but it's maximum horsepower output is around 300 hp to the wheels. You could use your S14 200SX compressor wheel and housing with a GTiR turbo which has a 79 trim turbine wheel vs the S14's 64 trim with a .86 A/R exhaust housing vs the S14's .64 Housing. The GtiR exhaust side of the turbo flows much better and the S14's compressor side is much better. Unfortunately, you lose the ball bearing S14 center section. However on small turbos like this, lag is less of an issue than backpressure reduction. Click for Full Image It's better to have more exhaust flow. With this turbo you're still limited to about 14-17 psi. If you want that boost-happy, pants-wetting feeling, you should get the larger T3/T4 setup. A good hybrid turbo setup should have no more than a 15% major diameter differential between the compressor and turbine wheels to take advantage of lower inertia mass of the smaller turbine wheel, which still allows both wheels to have nearly the same blade tip speed and therefore keeps slip losses to a minimum. More than a 15% wheel size differential starts to hurt turbine efficiency. The typical T3/T4 turbo has a 13% difference in turbine sizing. This makes it a very efficient setup. The T04E compressor wheel doesn't need to spin as quickly to get higher boost numbers (around 80,000 rpm vs 200,000 rpm for the T25). Therefore, it's more efficient (as much as 76% vs 72% for a T25) because it runs much cooler and the turbine won't need to recover as much energy from the exhaust flow to spin the compressor and shaft. A T3/T4 setup can easily get you around 400 hp to the wheels with 20+ psi; however, you will have to change to an external wastegate with those boost levels. You have to weld the wastegate flapper shut and weld a bung onto the exhaust manifold to attach the external gate. Lastly, invest in a ball bearing center section. It doesn't generate the friction a sleeve bearing center section does so it spools about 500-600 rpm faster so you can exploit one size larger A/R exhaust housing for more flow. You'll gain volumetric efficiency with the same amount of lag with better exhaust flow. A powerful but streetable hybrid turbo combination is a 50 trim T04E compressor wheel with 0.5 A/R compressor housing matched with a 76 trim T31 turbine wheel in 0.82 A/R exhaust housing. You can put 400 horsepower to the wheels at 20 psi with this setup and can generate useable boost up to 23 psi. A ball bearing center section will have you pulling hard by 4500 rpm. Just remember to keep this boost on the track!

Vlade · Post by **Vlade** » Fri Jan 19, 2007 10:29 am

Cool stuff

Phinx · Post by **Phinx** » Mon Jan 29, 2007 11:02 pm