Hey guys looks at upgrading my turbo ... was looking at a t04b with these specs..My question is, is this going to big enough? Looking at getting 300-400whp is this possible and running 8-15psi what I can I expect for spool/rpm?

Intake: 3 inch
Inlet: 2 inch
Compressor trim: .60ar
Compressor Wheel diameter: 53.90 /69.31
Turbine Wheel diameter: 63.98 /73.89
Exhaust Trim: 1.12ar
Turbine flange type:T4 flange
Down pipe flange type: 3 inch v band
Typical Journal Bearing


My car currently has:
Full 3 inch exhaust, bigger fmic with 2.5" piping, power fc standalone, 255 walbro, 4x720cc injectors, mild port, custom ss manifold, not worried about clearing lim and water/meth inj.

 

the turbo seems a little small
Especially the compressor wheel, its smaller then a to4b H trim and almost the same size as a v trim. The turbine seems to be a P trim wheel.
at 15-16 psi, it could make atleast 300hp

Comparable, its between a bnr stage 1 and 2

 

It will do 350rwhp with meth injection.

 

These were my thoughts exactly ... but I'm not an expert so I thought i would ask you guys..would a gt45 be a better fit?

GT45R
A/R 70
A/R 1.0
Turbine: A/R 1.00
Turbine wheel: exducer: 64.5 mm inducer:73.6mm
compressor: A/R 70
Compressor wheel: inducer: 61.4mm exducer:82mm
4'' Vband
water and oil cooled
intet size: 4''
outlet size:2.5"
Thrust bearing: 360

 

Or??? Would the twin scroll be ideal? Big difference here with compresser/turbine wheels?

gt45 turbo charger 1.00ar
Intake :4 inch
Outlet: 2.5 inch
Compressor trim: .70 ar
Compressor Wheel diameter: 66.71 /84.20
Turbine wheel diameter : 63.56 /73.60
Exhaust trim: 1.00ar
3.25" v band flange
oil cooled only
Twin scroll turbine housing

 

I had to look up a GT45R because the wheel diameters you listed don't seem at all right...and indeed they aren't. Those two turbos you have listed as a "GT45R" aren't GT45s at all...They read like the China eBay "GT45" turbos.

All the GT45s have much larger wheels:

(from ATP Turbo)
Turbine
-Wheel: 87.0mm w/ 85 trim
-Housing: 1.01, 1.15, 1.28, 1.44 A/R

Compressor
-Wheel: 108.0mm exd./80.8mm ind w/ 56 trim
-Housing: .69 A/R

http://www.turbobygarrett.com/turbob...R-774596-2.htm

If you want 350-400HP, then you're looking at the GT35R. A real one.

 

Thanks Aaron ..the specs didn't make sense to me either and yes they are from 'said' gt45 ebay turbos...The more and more I research the less I want one, however just out of curiosity with those specs what would be a comparable turbo?

 

get a 35R.

 

I assume you mean a real 35r?

 

you mean the comparable to the specs of the ebay turbos?
if so, those wheel specs are almost exactly the same as a to4r turbo. I think they modeled the turbo specs from a hks to4r and not a gt45.

 

Yes sorry ...I want to try an ebay turbo on this build ...if it doesn't work I will post it and you can tell me I told you so...but I would like to try it

So bascially if anyone wants to suggest a turbo with sufficent specs of ebay let me know

 

Why spend money on something that is well-known for failure..
Just spend a little more and you'll be set for life!

 

Anyone running a turbonetics? What would be a good size for 300-400hp