Hypergear Turbochargers and High flow Services Development thread

[Dose Pipe Sutututu]

4 hours ago, hypergear said:

I might have misunderstood the question. In my opinion, external gate bleed off factory exhaust manifold should make more power as it is restrictive towards the turbo flange 

A gate before the collector will always make more power than a gate after the collector (providing the collector has started to become a choke point).

Same turbo (well nearly, one was an ATR43SS2 journal vs. ATR43SS2 BB) different gate location and I picked up an extra 50kW on less timing.

 

[Adz2332]

On 14/12/2023 at 10:47 PM, hypergear said:

Yes, They can be built as an internally gated stock hot side bolton unit. External gate / External plumb back kits are also available. 

 

 

Any graphs on a RB25

 

ATR43SS-2 T3 .63 size.

[hypergear]

Yes this is a member from NZ. Thats using the turbine housing external gate kit plumbed back, currently sitting at 311rwkws @ 22psi on P98 fuel. 

[hypergear]

Posting update. 

This is a revision of G30-900 turbocharger. Third revision managed to pull 95kws more on top of the original G30-900. Recap:

 

Car used for test and tune is an Rb2530det powered R33 GTST.

Engine Specs:

Rb25det head with forged Rb30det bottom

Forged pistons and con-rod

Upgraded Valve springs

HKS 256/ 264 drop in cams

Fuel system:

1650cc Bosch fuel injectors

Two 460L fuel pumps

ECU:

Haltech ECU

5-0 Trigger kit

Turbo side:

Hypergear ATR43SS-3 Prototype turbo

6 boost high mount exhaust manifold

Turbosmart 50mm external gate

3 inches road legal turbo back exhaust with 2.5 inches cutout pipe for testing purposes only.

Hub Dyno Tune: Chequeredtuning Victoria

 

Car makes just under 300rwkws by 4000RPM in a standard 5 speed manual, peeked 586rwkws on E85 fuel. Turbocharger is not maxed, I will add more boost into it when my build box is back in action. Comparison graphs to the original G30-900 will be uploaded in comments coming week. Dyno video for now:

 

 

Edited March 2 by hypergear

[hypergear]

A quick note that we will be releasing popular Rb25det hot side bolt on G / GTX configurationed turbochargers, including internally gated, externally gated and externally gated plumb back versions. Geninue core can be supplied at additional cost. Link below:

https://hypergearturbos.com/product/rb25detgngtx/

 

Edited March 4 by hypergear

[soviet_merlin]

6 hours ago, hypergear said:

A quick note that we will be releasing popular Rb25det hot side bolt on G / GTX configurationed turbochargers, including internally gated, externally gated and externally gated plumb back versions. Geninue core can be supplied at additional cost.

Realistically, what difference does it make when running a genuine Garrett core or not? Performance? Reliability? I'm curious because it is such a big difference in pricing. Thanks!

[hypergear]

Differences will be minimal. If U do have concerns go for geninue core.

[Desean Strickland]

I have a brand new g3 21u high flow that I can’t use any more due to going 25/30 

selling it for $750 cost me $1000 

brand new never installed or used 

comes with stock wastegate actuator

in WA but can post it 

delete if not allowed 

[PranK]

On 05/03/2024 at 12:50 PM, Desean Strickland said:

I have a brand new g3 21u high flow that I can’t use any more due to going 25/30 

selling it for $750 cost me $1000 

brand new never installed or used 

comes with stock wastegate actuator

in WA but can post it 

delete if not allowed 

Chuck the ad in the classifieds section.

[hypergear]

Uploading dynot results from last week. This is our in house built G30-900 Vs two of our revised versions of G30-900. Pretty interesting as current prototype turbine with +2mm dia managed to make 88kw over standard G30 turbine. Green is another revision of G30-900 with a more free flow turbine aka ATR43SS3ProR. All three cores uses T3 .82 turbine housing. Latest prototype also shown +500RPM of lag, I do have one more prototype turbine to test, hopefully closing that gap alittle. test car is our Rb2530det R33 GTST with cams. 

 

 

[hypergear]

Updating results:

Today we’ve tested the 3rd custom turbine shaft for this compressor. New turbine have managed to pull 568rwkws at 29psi E85 fuel at a point that no more power could be made, which is 71kws gain over standard G30-900 and within 220RPM @ 20psi in response.

In comparison to all 4 turbine wheels including original G30, current turbine is 17kws short compare to sample 3 above, but it has similar drive ability to original while making significant gain in mid top rev range.

 

Vs UHF57 above

 

Dyno video:

 

[hypergear]

Further result update. This is from our ATR43SS3 model in T3 .63 rear housing, run against None Geninue G30-770 and 900 spec turbochargers in T3. 82 turbine housing. Those turbos are ideal for RB25det motors, Since I've got a bullet proof RB30det, its been used as test bed instead. 

All three turbos run to a point that no more boost could be held and no more power could be made. Same test car and exact vehich setup as been used testing all three turbos:

 

[GTSBoy]

Impressive power for a small rear housing. 👌

[hypergear]

Yep, I was supprised. Its all about flow rather then housing size. 

Doing G35-900 Vs ATR45SS-1 Next. 62mm V 61mm. 

Edited May 12 by hypergear

[Desean Strickland]

hey tao

is there much difference in flow or power between t3 open entry, t3 divided and t4 divided? 

am ready to get a turbo for my 25/30 and am gonna be running a 6boost mani, just dont know if i should get the open entry or divided entry 6boost or t4 divided? goal is about 450 whp but wanting good response and street drivability.

[hypergear]

The housing it self made minimum differences, while the exhaust manifold made a difference. 6 Boost T3 divided will do fine. ATR43SS3ProR model in T3 .82 rear (TS optional) from March 25th will be more then capable of 450whp with excellent response.   

[Dose Pipe Sutututu]

Would be good in the future if you can also get EMAP data.

Would make choosing a turbo easier for some.

[Desean Strickland]

12 hours ago, hypergear said:

The housing it self made minimum differences, while the exhaust manifold made a difference. 6 Boost T3 divided will do fine. ATR43SS3ProR model in T3 .82 rear (TS optional) from March 25th will be more then capable of 450whp with excellent response.   

Is there much difference in response or flow between t3 open and t3 divided? 
 

was going to get t3 divided but I can buy an open t3 6boost from a mate for $200 cheaper than it would be new. 

[GTSBoy]

Divided will ALWAYS improve response. Divided will POSSIBLY cause a small reduction in max flow, because there is less open area available in the turbo flange, especially on a smaller inlet like a T3.

[hypergear]

Updating results. 

Using ATR45SS-0 model VS UHF57-900. Those two are very different turbos, different wheels sets with different wheel hub profiles but yet with almost identical result. I’m intrigued with both turbos performance.

ATR45SS-0 was a 61mm turbo first developed in May 2020, UHF57-900 was a 62mm turbo developed in March 2024 as a powered up alternative of a G30-900.

On paper ATR45SS-0 maxed at 563rwkws, while UHF57-900 maxed at 568rwkws. ATR45SS was slightly more responsive with slightly better power band through the mid range. 

Road driving ability, ATR45SS-0 had better throttle response, felt more robust under throttle, as it wakes up earlier. I think G series wheel hub design made it to have higher inertia under light throttle.

Doing bit more prototype work in the next few weeks, will update result when its back on dyno again.

ATR45SS0 Blue, UHF57-900 Red

Chequered tuner's Dynapack hub dyno, E85 fuel. Mod list is in video below