3071r setup????

[stevecorrado88]

so i have a s13 sr and my plans are to get tomei poncams,tomie 740cc injectors,Probly a isis intake mani (Cheap lol),Z32 Maf,Isis Top mount and a tial 38mm wastegate....Now Besides the top mount i had the same setup on my s14 with a gt2871r with 18psi using a Apexi AVCR and i feel like i want alittle more power this time so im thinking of going with a gt3071r but do not no what trim to get for around 400 hp, so any thoughts on what i should do????

[4x4le]

You should have been real close to 400 if not at it with the 2871...
The 3071 should put you there. Get a divided turbine housing and a sound performance quick spool valve if you want faster spool too.

[stevecorrado88]

There's too many options when picking this turbo I don't no what trim and shit too get apturbo gives way too many option.....

[jspaeth]

Usually, you only get a trim option on the compressor wheel and an A/R for the housing on the turbine housing.

Turbine housing A/R can make a BIG difference in spool (maybe as much as 500 RPM) and also some difference in how the turbo flows at high RPMs (depending on how the turbine and compressor wheel match with each other.

The trim of the compressor wheel makes a difference.....the bigger the trim, the more the compressor wheel can flow.

I just looked at the Garrett website....

The 56 trim wheel can flow a max of around 48 lb/min, whereas the 60 trim wheel can flow around 55 lb/min.


If your goal is TRULY 400 hp both will work.


Might want to ask someone else first, but the smaller wheel may spool slightly faster.


Like I said not sure how much compressor wheel trim effects spool in comparison to turbine housing A/R (which I know dramatically effects spool)......

[jspaeth]

Here ya go....this is something from ATP:

Garrett GTX3071R Dual Ball Bearing Turbo : atpturbo.com (http://www.atpturbo.com/mm5/merchant.mvc?Screen=PROD&Store_Code=tp&Product_Code=GRT-TBO-100&Category_Code=GTX)

I would go with the GTX turbo....more efficient design means you can hold boost to higher RPMs without the air heating up....

[stevecorrado88]

What about this??? Garrett GT3071R Turbocharger [ GarrettGT3071R ] - Enjuku Racing - Performance Parts and High Quality Fabrication (http://www.enjukuracing.com/garrett-gt3071r-turbocharger-p-7796.html)

[fliprayzin240sx]

Dont go T2 flanged...get a top mount T3 flanged for something this big of a turbo. T2 flange tends to get too restrictive for a any 30xx series turbo and larger.

[stevecorrado88]

How bought this???Garrett GT3076R Turbocharger [ GarrettGT3076R ] - Enjuku Racing - Performance Parts and High Quality Fabrication (http://www.enjukuracing.com/garrett-gt3076r-turbocharger-p-7797.html)