Hypergear Turbochargers and High flow Services Development thread

[BK]

On 02/05/2022 at 9:42 PM, hypergear said:

Another result to share. This is from one of our rebuilt and high flowed Precision 6262 turbo. Making 626rwkws on a R33 GTR.

Built 2.9L
Hypertune intake
6boost exhaust manifold
4" dump/front
Pwr intercooler
Bosch 1650cc injectors
Twin walbro 460 pumps
Plug and play link g4x
Prp coil kit
Prp trigger kit
drop in cams and valve springs

Great result mate from a 6262 frame. If you can rebuild / modify Precisions I'll definitely keep that in mind 👍

[hypergear]

Quick product range update. Externally gated and externally gated plumb back rear housings are now available in a kit with turbosmart 45mm gate. They are good for sub 700whp applications, can work with all Garrett GT30/35 series cores as well as all Hypergear's High flows and ATR series. PM for details if interested.

 

 

[Dose Pipe Sutututu]

Fantastic looking kit @hypergear! 

[hypergear]

Updating result. ATR45SS-0 Ball bearing turbo on a Rb25det Neo motor with stock cams and built buttom end. Car made a super responsive 512rwkws plumbed back @ 32psi,  and 500rwkws externally gated @ 28psi. 

Edited June 29, 2022 by hypergear

[hypergear]

One more result to share from a R33 GTST.
Rb25det Block + Rb26 Crank
Arias 86.5mm Pistons
Eagle H beam rods
ARP 2000 Main studs
Half inch ARP head stud conversion
N1 Nissan Oil pump with Spool gears
Reconditioned head with Kelford Valve springs
1650cc Fuel Injectors
520L fuel pump
Haltech ECU 
High mount exhaust manifold
HyperGear ATR43SS-3 Turbocharger
50mm external gate
Tuned at Chequeredtuning
Final result of a responsive 455rwkws @ 26psi maxing out onboard map sensor

 

 

[hypergear]

Another result to share. This one is with our new ATR45SS2-RB26 version in T4 .82 rear on an R33 GTST Rb25det motor. This turbochargers uses one of our custom made turbine wheel that worked extremely well, and I'm truely amazed of how well factory RB25det stock cams are capable of. Final result of 1011rwhp @ 37psi with Nos or 850rwhp without.

R33 Rb25det 2.5L engine
CP Pistons
Spool I beams
Stock crankshaft
Spline drive oil pump with billet gears
Arp2000 headstuds
Athena headgasket
Performance valve springs
Stock cams
2400cc Fuel Injectors
2x 520L fuel pump
Rb26 inlet manifold and itbs
Crg twin scroll t4 manifold single 50mm turbosmart gate
Haltech ECU
HyperGear ATR45SS2-RB26 Turbocharger in T4 .82 rear
All work done and tuned by CPG
Final result of 635rwkws / 754rwkws @ 37psi with Nos.
E85 fuel

 

 

 

[Dose Pipe Sutututu]

Really liking that ATR43SS3, results are excellent.

[hypergear]

Update results. This time a high flow of a R34 GTT's OP6 turbocharger. Turbo's running our SS2 profile with custom 4 inches front housing, externally gated on E85 fuel. Car's got a stock RB25DE Neo that made astonishing 411rwkws. Thats the highest I've seen out a NA+T so far. 

 

[R3N3]

Hi Tao,

love the work with the turbos. I’ve always been keen to get one of your turbos on my car!

im currently building my 33 (unopened RB25) and I’m after a really nice responsive turbo for around the 280-300(ish)kw range. I have been keeping an eye on the ATR43G3SAT but I know you are constantly developing your products, so keen to get your thoughts?

i would also look to purchase with the externally gated plumb back kit you have recently released also.

Cheers

@hypergear

[hypergear]

9 hours ago, R3N3 said:

Hi Tao,

love the work with the turbos. I’ve always been keen to get one of your turbos on my car!

@hypergear

Hi, thank u for the post, the ATR43SS-2 model is the latest and the most reponsive for 300rwkws mark with the external plumb back kit. Details at:

https://hypergearturbos.com/product/atr43ss/

[R3N3]

2 hours ago, hypergear said:

Hi, thank u for the post, the ATR43SS-2 model is the latest and the most reponsive for 300rwkws mark with the external plumb back kit. Details at:

https://hypergearturbos.com/product/atr43ss/

Thanks, what size exhaust housing?

[hypergear]

9 hours ago, R3N3 said:

Thanks, what size exhaust housing?

For ATR43SS-2 on Rb25det motor, The recommended rear housing is in T3 .63 size.

[SKYMAGGOT]

With all the rb25 testing can you please give an idea of what you think are rough limits of the stock r33 type head & the neo head, assuming they're in good condition? Roughly what the stock springs & cams will do, thanks

[hypergear]

S2 head just made 635rwkws on E85 and 754rwkws on Nos. Neo head the highest so far was 570rwkws, I don't think its maxed, probably 650rwkws to a point that it won't be making any more power. Those are using stock cams with head studs. 

Edited September 28, 2022 by hypergear

[SKYMAGGOT]

Thanks, pretty close between the s2 & neo, better to spend on the bottom end & just springs in the head for most probably.

[riceline]

Gday Tao,

A bit over 10 years ago (page 255) there were discussions around the e-turbo you were developing.

Did anything more ever eventuate from this?

[hypergear]

Nope, I got paid $10G back in the days for development. We had 3 good working prototypes, the best one ended up made 6.5psi of boost on a standard 14V battery. Client took the samples and that was it. With the latest brushless motors today, I should be able to do way better then that, perhaps when more spare time is available.

 

Edited November 9, 2022 by hypergear

[hypergear]

First proper results from our new test rig. Car made 400rwkws @ 20psi so far with boost control issues to sort. Build specs are:

R33 GTST white colour 1995 Series 1.5, Sunroof model
Rb25det Engine:
CP pistons
Spool Con-rods
Performance valve springs
APR head studs
ID 1650 injectors
2x Walbro 460L Pump
GTR Coilpack upgrade
HyperGear ATR43SS2 Turbocharger
6 boost high mount manifold
Greddy Forward facing plenum with 3 inches throttle body
PWR 600x300x81mm intercooler
3.5 inches stainless turbo back exhaust
50mm Turbosmart gate plumbed back
Haltech Plug-in ECU
Tuned at Chequered tuning

[hypergear]

Following the current externally gated version ATR43SS-2 dated from June this year. Some modifications have made for them working internally gated as a Rb25det bolton upgrade. Finally got the car on dyno today and It pulled a pretty impressive 346rwkws internally gated on E85 fuel.

R34 GTT, stock engine, usual intake, cooler, and 3 inches turbo back exhaust with 100 cell cat. Boost pressure held at steady 22psi all the way across and plenty of power through out rev range.

 

 

Edited December 9, 2022 by hypergear

[hypergear]

Posting few engineering videos of turbo housing profile process for people whom's interested.

Comp housing, profile machine from raw casting:

 

 

Rb25det turbine housing profile machining for bigger turbine shaft: