timg

I'm wondering if there will be a GT3782R or GT3788R? Something with spool and power potential in between that of the GT35R and GT40R... There's a huge jump in the turbine sizes of the GT35R and GT40R - the inducer of the GT35R is the same size as the exducer of the GT40R. I was thinking that the GT37 turbine might give a bit more power potential than the GT35 turbine with better spool than the GT40 turbine. Any ideas? I'm wondering if this is the same as the so called GT35RS that A-Spec is using on the RX-7.

Turbo - - - Exducer - - - Inducer - - Trim
GT35R - - - 61.58 - - - - 68 - - - - - - 82
GT3782 - - 66.45 - - - - 72.5 - - - - - 84
GT4088R - 68.00 - - - - 77 - - - - - - - 78

Thanks.

Tim

If You Slip You Die

AMS has a 37R on a white evo and it went 9.9s with 700+awhp

Boostfed

Precision makes a GT3767

I also show a GT3776 and GT3782 which are journal bearing versions, I am checking on the BB versions if at all sir

kamAccord

http://www.precisionturbo.net/...L.XLS

Precision Turbos and other other products.

alpha

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by If You Slip You Die &raquo;</TD></TR><TR><TD CLASS="quote">AMS has a 37R on a white evo and it went 9.9s with 700+awhp</TD></TR></TABLE>

AMS used the "name" GT37R. The turbocharger uses nothing from the GT37. It's actually a 67mm compressor wheel with a P trim turbine wheel. So a PT-67R.

I have tuned a car with a journal bearing GT37S. It was a great turbocharger. Wish they had a dual ball bearing option for it.

Boostfed

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 0x64 &raquo;</TD></TR><TR><TD CLASS="quote">

AMS used the "name" GT37R. The turbocharger uses nothing from the GT37. It's actually a 67mm compressor wheel with a P trim turbine wheel. So a PT-67R.

I have tuned a car with a journal bearing GT37S. It was a great turbocharger. Wish they had a dual ball bearing option for it.</TD></TR></TABLE>

Good info

80884

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kamAccord &raquo;</TD></TR><TR><TD CLASS="quote"> http://www.precisionturbo.net/...L.XLS

Precision Turbos and other other products.</TD></TR></TABLE>

What a tease, I can't open that on this pc...now my day at work will be that much longer.

Boostfed

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 80884 &raquo;</TD></TR><TR><TD CLASS="quote">

What a tease, I can't open that on this pc...now my day at work will be that much longer.

</TD></TR></TABLE>


It's just a price list , no additional stuff

80884

Ok I feel better now. Does garrett or precision list seperate parts for the turbo? Like price on certian turbine wheels, all the pieces that make up the turbo seperate. How would one look this stuff up without bugging Terry too much? lol

Boostfed

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 80884 &raquo;</TD></TR><TR><TD CLASS="quote">Ok I feel better now. Does garrett or precision list seperate parts for the turbo? Like price on certian turbine wheels, all the pieces that make up the turbo seperate. How would one look this stuff up without bugging Terry too much? lol
</TD></TR></TABLE>

I don't have all the individual parts listed anywhere sorry

timg

It would be interesting, IMO, to take a complete GT35R and swap on the GT37 turbine with a T4 housing. Has anybody ever tried that?

Tim

discopotato03

Garrett IS doing GT37R cartridges based on the GT37 (72.5mm 78T) HP series turbine . It comes in 3 stages (3 compressor options) .

1) 82mm 50T
2) 82mm 56T BCI-18 wheel .
3) 88mm 52T C117 wheel a la GT4088R .

They are based on GT40R style centre section .

You will find them in the power stroke diesel section of turbobygarrett site under Cummins .

Search GT37R / GT3782R / GT3788R also .

Cheers A .

seen4ever

what about gt3567r?

that's what I went to, defiately a bit more kick than my gt3561e at the same boost levels.

although i went to a 1.06ar turbine housing too to allow it to breathe

JDMs1eeper

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TurboByGarrett.com &raquo;</TD></TR><TR><TD CLASS="quote">

GT Basics / Nomenclature

Today, Garrett has a wider selection of GT-series turbos available than ever before. As a result of this, please note that we have made a subtle modification to the GT nomenclature.

In our product catalog, all offerings are grouped according to their turbine wheel frame size. The frame size of a turbo or CHRA is dictated by its turbine wheel inducer diameter . The larger the turbine inducer, the bigger the frame size-- so any turbo in the GT42 family has a larger turbine wheel inducer than those in the GT35 family, and so on.

In the model name of each turbo or CHRA, you'll also notice two digits after the frame size. These two digits refer to the compressor exducer diameter, as measured in millimeters.

Let's use the GT4294 as an example. This unit has a GT42 frame size turbine coupled to a 94mm (exducer diameter) compressor wheel.

If there's an "R" on the end of a model name, this means the unit is ball bearing. So, a GT4294 is not ball bearing; whereas a GT4294R is ball bearing.

The biggest change related to the nomenclature is this: units which utilize a 53mm turbine wheel (as measured at the inducer) are now referred to as "GT25" frame size, while units employing the slightly larger 53.85mm turbine wheel are now referred to as "GT28" frame size.

For those familiar with our product range, this means that the unit formerly known as "the GT28R" (part number 466541-1) is now in the GT25R family. More specifically, it is now a GT2560R model.

A Guide To Garrett’s "GT" Model Numbers

GTxxyyzz:

* Positions "xx" refers to the frame size of the turbine wheel inducer.
o 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
o 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
o The "60" in the GT2860RS example above has a 60mm compressor wheel exducer diameter.
o Note: Wheel sizes 100mm and over omit the "1" (hundreds digit)
o 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
o Example: GT2860RS
o "R" = this is a Ball Bearing unit
o "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
</TD></TR></TABLE>

discopotato03

Lots more research to do . Basically these GT37R turbos core wise are the larger shaft and BB pac version than the GT35R/GT3540R/GT3582R (same thing) , basically the next frame size up . As mentioned they use a different and larger bearing housing and the compressor back plate bolts on the front so different again to the GT25BB centre section with the circlip and adapter rings . There are a few GT40 comp cover options that I've seen in .58 and .72AR ratios .

The stumbing block with these things as usual will be the turbine housing , they are T3 flange but .89 and .99AR ratios are big for some applications . At planet "Disco" we'd have T3 and T4 flanged versions and maybe a single entry integral wastegated version . Honeywell Garrett could sell lots more of these turbos if they make it easier to fit on petrol apps . The split T3 flange with only half the housing gated would not be real good on a petrol engine IMO .

Possibly assembled in the TO4Z's BB bearing housing we could get access to the huge range of TO4 turbine housings . Another maybe would be to graft them into the GT35BB type turbine housings of which some are now integral waste gate . Neither way is really ideal so its up to either Garrett or the aftermarket to make something up .

Either that or Garrett could offer us the GT35R turbo in smaller compressor trims which is the easiest really .

Cheers A .