Does anyone know what nissan turbo is a "2560"? I find a ton of T25's T28's, T28R (2560R) but can't find out what nissan turbo number is a "2560" that is best for our cars.

Tahnks,
Drew

 

I believe the infamous "T28" found on the sr20, is basically a 2560.

 

Garrett Part No. 466541-1
Nissan Part No. 14411-69F00

Garrett Part No. 466541-4
Nissan Part No. 14411-91F00

From Garrett's catalog for the GT2560R:

- Dual ball bearing, oil & water-cooled CHRA
- Internally wastegated turbine housing complete with actuator
- Turbine housing is cast from high-nickel “Ni-Resist” material (466541-4 only)
- Turbine wheel is cast from “Inconel” material for extreme applications (466541-4 only)
- OEM turbocharger on Nissan SR20DET engine

 

It's only on S15 SR20s. The run on the mill S13 and S14 motors aren't 2560s. Also, a 2560R is a 2560. The 'R' just denotes ball bearings.

 

So basically they're rare on nissans, and still not the real deal ball bearing 2560 everyone on here raves about

Still nice tho

 

All s13's used a 56mm compressor wheel which makes the turbo similar to the gt2554. This is the most common sr20 turbo.
The s14 used a 60mm compressor wheel and it was basically a journal bearing 2560.

 

The S14 turbo is very much a regular *** T28.

 

seems to be a lot of conflicting info.

 

Conflict this:

Specifications for RED Top SR20DET
180SX 91-93 and Silvia 91-93
Displacement: 1998cc (2.0 liter)
Cam type: DOHC 16 valve, chain driven cam sprockets
Bore and stroke: 86mm x 86mm
Compression: 8.5 : 1
Horsepower: 205ps at 6000rpm
Torque: 203 ft/lbs at 4000rpm
Stock boost: 7 psi
Throttle body bore: 60mm
Injector size: 370cc/min
Turbo specs:
Compressor: T-25, 60 trim 56mm BCI-1 compressor.
Turbine: T-25, 62 trim 53.8mm 0.64 A/R turbine housing.
Center Section: Journal bearigs

Specifications for Black Top SR20DET
180SX 94-98
Displacement: 1998cc (2.0 liter)
Cam type: DOHC 16 valve, chain driven cam sprockets
Bore and stroke: 86mm x 86mm
Compression: 8.5 : 1
Horsepower: 205hp at 6000rpm
Torque: 203 ft/lbs at 4000rpm
Stock boost: 7 psi
Throttle body bore: 60mm
Injector size: 370cc/min
Turbo specs:
Compressor: T-25, 60 trim 56mm BCI-1 compressor.
Turbine: T-25, 62 trim 53.8mm 0.64 A/R turbine housing.
Center Section: Journal bearings

Specifications for Black Top S14 T28 VTC
Silvia 95-98
Horsepower: 220hp at 6000rpm
Torque: 203 ft/lbs at 4800rpm
Turbo specs:
Compressor: T-28, 60 trim 60 mm BCI-1 compressor in T-04B housing
Turbine: T-25, 62 trim 53.8mm 0.64 A/R turbine housing.
Center Section: Ball Bearing

Specifications S15 Black Top SR20DET
S15 Silvia 99-
Horsepower: 250ps at 6000rpm
Transmission: 6 Speed, Close Ratio
Injector size: 480cc/min
Turbo specs:
Compressor: T-28, 60 trim 60 mm BCI-1 compressor in T-04B housing
Turbine: Inconel turbine wheel. Cast divider wall between turbine discharge and wastegate.
Center Section: Ball Bearing

 

thanks. I think???

 

Check the Nissan forums. 2 months ago I bought a brand new (in nissan parts box) S15 bb turbo for $730 shipped. according to Garrett its the same as a 2560r except for the inconel turbine wheel/cast divider wall in the turbine housing and the Inlet/outlet on the turbo require adapters

 

Guys, this is simple.

S13 red/blacktop turbo: Small t25, journal bearing, a 2554 basically.
s14 notchback turbo: bigger t25, journal bearing, a 2560 basically.
s15 vvt turbo: bigger t25, BALL BEARING, same size as s14 turbo - 2560 basically.

So you want a BB 2560? Find a s15 turbo. I THINK (not sure though) some of the late s14 motors also had these, but still rare.

Edit: just read thirdgens post above. Looks like the s14 "silvia" was ball bearing as well? I do know the ball bearing versions are the rarest, but i've seen them for around 350 bucks a few times now. This is what I'm getting for my new build..

 

Late s14 turbos had a single ball bearing on exhaust and a journal bearing on the intake side. s15 turbos had dual ball bearings. Hope that clears some things up.

 

TIL. Thanks. I know there was a considerable difference in spool between the two.

 

Good to know.