Hypergear Turbochargers and High flow Services Development thread

[Harey]

high pressure actuator FTW!

[Crans]

Stao my turbo is hitting 1bar with the boost controller turned off, any ideas?

[hypergear]

Thats why its called 1KG actuator. Once boost controller removed it should stay around 10psi. You can also play with the actuator's pre-load to alter boost settings.

[Crans]

Thats why its called 1KG actuator. Once boost controller removed it should stay around 10psi. You can also play with the actuator's pre-load to alter boost settings.

Boost controller has been turned off. Which way do i adjust to lower boost? Not keen on 1Bar until injectors are sorted

[bozodos]

Stao, what if any are the differences between your GT3076 with your .82 rear and the Garrett original version? I realise you use a different exhaust housing and that it's a direct fit, but does the turbo have any less potential due to the compressor housing?

[GTScotT]

Stao, what if any are the differences between your GT3076 with your .82 rear and the Garrett original version? I realise you use a different exhaust housing and that it's a direct fit, but does the turbo have any less potential due to the compressor housing?

+1 good question

[hypergear]

Just direct vacuum straight into the actuator with no boost controller. You should see a drop in boost curve.

GT3076 is a Original Garrett Item. We use them in our turbo builts, high flows and overhauls depends on customers request. Most of our turbochargers are built in sleeve bearing setup which is some thing that is equivalent to produces similar end result.

Garrett does not have IW housings that made to suit RB25det OEM engine setup. Ours is a custom made housing which is in the same Air ratio but with OEM RB25det Bolton pattern.

[GTScotT]

stao would you be able to hiflow a 2IU to HKS GTRS or 2835 spec?

I would be interested to know if its possible also to do a hiflow with 3076 internals and a matching front housing size that would perform similarly as well... is it possible to modify the RB rear housing in a way that is as effective as the original garrett IW housing in this scenario? in a way that does not require cropping of the exhaust wheel and that does not have the exhaust wheel pertruding out the rear port of the turbo (therefore blocked by the housing)

it would be great if you could clear these up for me Stao, thanks

[hypergear]

We can build a 2871 equivalent CHRA in a customized T3x .64 turbine housing with 6 bolt dump. Should make similar sort of power and response.

[Harey]

Garrett does not have IW housings that made to suit RB25det OEM engine setup. Ours is a custom made housing which is in the same Air ratio but with OEM RB25det Bolton pattern.

They actually do now: NEW!! RB Nissan Special Garrett GT3076R ball bearing turbo

Bottom of page 2:

http://horsepowerinabox.com/HPIAB2/category12_2.htm

Although, GCG do not like it and say that the standard skyline flange is too restrictive for the GT3076R and causes boost spiking etc.

[hypergear]

This is from a Friend's 95 R33 running a ATR45 600HP turbo in .50 comp and .82 turbine internally gated using a high pressure actuator.

fully stock RB25det engine, 550cc injectors, cooler, Nistune chiped Z32 ECU , and 3inch turbo back exhaust. Tuned at 399rwHP @ 18psi.

It hits 18psi at 4800RPM. Not the most responsive turbo, But it certainly can do lot more then 300rwkws.

[That_timothy]

This is from a Friend's 95 R33 running a ATR45 600HP turbo in .50 comp and .82 turbine internally gated using a high pressure actuator.

fully stock RB25det engine, 550cc injectors, cooler, Nistune chiped Z32 ECU , and 3inch turbo back exhaust. Tuned at 399rwHP @ 18psi.

It hits 18psi at 4800RPM. Not the most responsive turbo, But it certainly can do lot more then 300rwkws.

Hi,

Sorry, I know you've probably been asked this question too many times to count, but I read a few pages ago a quote from you saying something like "We can build you a turbo to hit 280rwkw with excelent street response" from an RB25. I'm very interested in this, could you detail exactly what this would entail man? I've been reading through the thread but everything seems to change so often I thought I'd just ask you to see what was current.

This sounds awesome man, I just want to work out if I need to, and where to get dump pipes, and if my tuner's happy tuning this (I see no reason why he wouldn't be =]).

Cheers,

Tim

Edit: Obviously all the supporting mod's will already be factors, I'm just interested as to the specs of the turbo. Oh, and a price, if it's ok to post it here?

Edited February 11, 2010 by That_timothy

[That_timothy]

I'm also very interested in your "GT3076 spec turbo in .82 turbine housing", how different is that going to be?

[Harey]

What does the 0.82 housing look like? Is it similar to the standard nissan one? Or is it obvious its aftermarket?

Will the standard heat shield still fit on?

Edited February 11, 2010 by Harey

[hypergear]

The ATR43G3 is a 3076 56T equivalent turbo. in .82 turbine full boost at 4300RPM. Good for about 280rwkw with highpressure actautor internally gated. We can install a GT3076BB 56T CHRA for $450 additional.

The .82 turbine housing is a custom made housing in T3x print, with a 6 bolt OEM RB25's dump pattern.

[That_timothy]

Cool =]

So that'd be 1250 + 150 for the ATR43G3 with .82 housing and the high pressure actuator right?

[HR31_RB20DET]

The ATR43G3 is a 3076 56T equivalent turbo. in .82 turbine full boost at 4300RPM. Good for about 280rwkw with highpressure actautor internally gated. We can install a GT3076BB 56T CHRA for $450 additional.

The .82 turbine housing is a custom made housing in T3x print, with a 6 bolt OEM RB25's dump pattern.

Is it possible to get the ATR43G3 with a .63 rear?

As I was looking at getting either a 3071 or 3076 with a .63 rear.

[hypergear]

Yes that'd be 1250 + 150 for the ATR43G3 with .82 housing and the high pressure actuator. + 10% GST and $80 oil feeding line. which is $1600 AUD.

Same profile In .63 turbine can get full boost around 3500RPM. But you need a external gate to hold it steady.

Boost curve in .63 turbine:

http://www.digi-hardware.com/images/dynosh...3boost15psi.jpg

[That_timothy]

Ahh champion man. It won't be a problem that I live in Perth will it? I can't imagine postage being an issue or anything?

[HR31_RB20DET]

Same profile In .63 turbine can get full boost around 3500RPM. But you need a external gate to hold it steady.

I'm only running an RB20 so would boost control still be an issue, as .82 rear on an rb20 would be a no go.