T-28

[lp216]

Hi guys.

I looking to upgrade my turbo for a more efficient one. I found an interesting option. I recently learned that the R32 turbo (T-28) will fit perfectly in the MSP. I can find one of these easily for about 200$.

Anyone ever try to do this modification?
I want a turbo who will run safely a 8-9 PSI without forging my internal, and giving more HP by PSI

For my mods, I have :
FMIC
MBC
SRI
Vibrant hardpiping
Magnaflow catback
catless
3" J-pipe
AWR mount
Boost and Wideband

and i will add an afc and an excedy stage 1 clutch this winter

If anyone can give me an example of the gain i could have with this turbo, it will be greatly appreciate

 

[ForceFed]

Any Gain on a Stock Rodded Block is asking for trouble.

 

[MSP2024]

i wouldnt run it at 8 or 9 not being forged

 

[2.0t03speed]

iirc the syline t28's are a t3 flange. They wont bolt up. the silvia turbos will tho they are all t2 flanged

 

[KrayzieFox]

Why does everyone think they need bigger a turbo on stock internals? Especially if you're pushing 8-9 psi. The stock GT25R can handle it just fine, and can pump out even more power than the engine can handle.

Save your money for forged internals, and crank up the boost on the stock T25 turbo instead. You don't need a T28 or bigger for 8-9 psi, the T25 is plenty.

 

[ForceFed]

Why does everyone think they need bigger a turbo on stock internals? Especially if you're pushing 8-9 psi. The stock GT25R can handle it just fine, and can pump out even more power than the engine can handle.

+1

 

[jamesk]

well, a bigger turbo with lower psi would produce lower heat. plus the later spool up is easier on the transmission too.

engines that boost fast at low rpms tends to break parts. puts too much load on everything at a low rpm.

id say a t28 on 8 psi with the supporting mods and a good tune is safe.

the best way to compare these things is with a compressor map. depending on where you want the power, that determines which turbo set up is better.

 

[lp216]

Thx a lot for all the answer, but I still don't know what to do :S

Yeah i know the T-25 can pump out more power the engine can support,
but this is not the point

The t-28 has a better flow than the t-25, so produce much HP by PSI.
Then, the t-28 at 8 PSI will produce more power than the T-25 at 10-11.

Thats what i learned, correct me if i'm wrong.

 

[MSP2024]

save your money and forge the motor then go crazy with the t28

 

[lp216]

save your money and forge the motor then go crazy with the t28

hehe if i forge my motor, it's gonna be more likely a gt-28rs or a gt-30

 

[MSP2024]

hehe if i forge my motor, it's gonna be more likely a gt-28rs or a gt-30

haha even better haha make it a monster on the street haha

 

[43975]

I'm running a GT28RS with stock internals. I'm only boosting 6 PSI. 7 is the limit I would personally attempt. I have been in contact with several other members running GT28RS's and have had success with 10 psi on stock internals. I choose to not tempt fate. Since both my T25 and GT28RS were both un 6 PSI, and literally the only mod we made at first was the turbo. I can say without a doubt the car made a hell of a lot more power per my butt dyno, and the added pain in my neck region. With your mods and a good tune with the Split Second you should be straight. and moderate boost. I still would go over 9 PSI though. It'll scream.....Safely!!

 

[2.0t03speed]

Thx a lot for all the answer, but I still don't know what to do :S

Yeah i know the T-25 can pump out more power the engine can support,
but this is not the point

The t-28 has a better flow than the t-25, so produce much HP by PSI.
Then, the t-28 at 8 PSI will produce more power than the T-25 at 10-11.

Thats what i learned, correct me if i'm wrong.

please read what i posted none of the skyline turbo's are in a t2 configuration. All of them are t3 flanged

 

[Ricktalife]

Thx a lot for all the answer, but I still don't know what to do :S

Yeah i know the T-25 can pump out more power the engine can support,
but this is not the point

The t-28 has a better flow than the t-25, so produce much HP by PSI.
Then, the t-28 at 8 PSI will produce more power than the T-25 at 10-11.

Thats what i learned, correct me if i'm wrong.

if neox saw this thread he would blow a gasket.

 

[lp216]

please read what i posted none of the skyline turbo's are in a t2 configuration. All of them are t3 flanged

Oh sorry.

And wich turbo is in a sylvia?

 

[neox.286]

if neox saw this thread he would blow a gasket.

...why?

he's right, you can make more power out of a gt28 at less boost pressure....you are getting much closer to the limits of the stock block horsepower wise but you are actually running that amount of horsepower safer, in theory, than if you were running 10 psi out of a gt25

boost pressure and airflow are two different characteristics...they are interrelated, yes, but they are still different characteristics

that being said, the group here is also 100% correct...on a stock turbo you can produce more horsepower than the motor can take, and you can produce it safely at 10 psi on the stock block

you can run 10psi on a gt28 without any problems, I know from experience and from many other members' experiences....however the key point to know is that you are risking it if you are not running a proper tune...the stock rods can take 10 psi out of a gt28 as long as you don't hit predetonation, and you can avoid predetonation with a proper tune

*shrugs*

bottom line is, don't bother going for power on the stock block...it isn't worth it, trust me lol

 

[CustomMSP]

It's all about efficiency and back-pressure, and a T28 is definitely the better choice for both of those. It has a larger turbine wheel, therefore the engine will see less back-pressure which equates to less stress and heat. This allows one to run less pressure while making more power. Pair this with a thicker headgasket like Cometic .070" to lower the compression to around 8.7:1 and you're good to go for atleast 10 psi from the T28 on the stock block, of course with more fuel and other supporting mods. You'll be making around 230whp, which is plenty for a FWD car that weighs ~2800.

 

[neox.286]

+1
exactally

 

[808MP5]

im currently running 7psi safely as far as I can tell on a GT3076RS
i wanna go forged/built trans and push 14psi someday... don't know what im trying to say.... oooooga booooga

 

[MSP2024]

a GT3076RS

show off haha jk