I need to order a turbo tonight, I have a t4 flange on my manifold. 13bt with a street port, my goal is 300 hp at 10 psi or so and 350 or higher at 15 psi or so - hp to the wheel. I was told a t04 60-1 is a bit overkill for my goals and from what I have found in the past few days searching and learning this is what i came up with-let me know what you know- tell if im off here. I need to order a turbo tonight to get my car out again- THANKS!

Compressor specs:
Garrrett
TO4E .60 a/r
57 trim compressor wheel

Turbine specs:
T4
.84 a/r
P-trim turbine wheel

 

that turbo should do the job fine

 

can someone with more turbo experiences explain the characteristics of the turbo..when does it start to boost?...when does it hit max boost?

 

yes please- also is a gt40 with a 50 trim to much- I am really lost on the gt series

 

u cant rep a gt. they all have t2 style flanges i beleive.

 

lol this thread is doomed

 

 

well thanks for setting it straight then- and the useful info jacobcartmill, now I know exactly whats going on

what is the gt series equivalent of the first turbo I posted?

 

there isnt a really a gt series "equivalent" of a t04e 57 trim.

 

ok- does gt40 mean that it has t4 housings and the gt30 that it has t3? im sure that either a obvious or stupid question but- I dont know the answer

 

lol

 

come on dude... you're not allowed to post stuff like that ^


A Guide To Garrett’s "GT" Model Numbers

GTxxyyzz:

Positions "xx" refers to the frame size of the turbine wheel inducer.
-For example the "GT28" in "GT2860RS" refers to its turbine wheel frame size family. All GT28 units use a turbine wheel with 53.85mm inducer diameter
-As a rule of thumb, the larger the number, the larger the turbine wheel.

Positions "yy" designate the compressor wheel exducer (major) diameter in millimeters
-The "60" in the GT2860RS example above has a 60mm compressor wheel exducer diameter.
-Note: Wheel sizes 100mm and over omit the "1" (hundreds digit)
-Example: the 02 in a GT4202 refers to its 102mm compressor wheel exducer diameter

Positions "zz" may be used to designate special features of a particular turbocharger where applicable
-Example: GT2860RS
-"R" = this is a Ball Bearing unit
-"S" = used for units which require some differentiation from units in the same family

Compare a GT2860R to a GT2860RS. While both are ball bearing and externally similar, the GT2860RS is better suited for higher-flow applications than the GT2860R. In this case, the S reflects the higher-flowing nature of the GT2860RS

 

i hope that answered your question.

in short:
(speaking of the hotside only)
gt28's have a T28 footprint.
gt30's have a T3 footprint.
gt40's have a T4 footprint.

and you can get different versions and housings and such.


edit: 6000 posts!

 

jacob is a post *****

 

hey, atleast this time i posted some relatively useful information for the turbo newbs

 

No, so stop asking.
That's the short answer.

The long answer is that there is just too many variables to consider when talking about boost characteristics, and unless you can replicate someone else's exact set-up, it's next to impossible to give you answer.


-Ted

 

You've probably already seen these, but just in case...

http://www.limitengineering.com/catalog.pdf

http://www.limitengineering.com/GTmodelcode.doc