Hypergear Turbochargers and High flow Services Development thread

[Genifx]

See you make a version of the g25-550 and. 660 aswell. Do you have any test of the smaller turbos on the rb25det for us that not hunt big power but whant a good responsive setup for a unopende engine? Looking for a good upgrade for my rb25 powered Datsun 260z. Whant something around the 350-400whp mark. And dont whant a high flow.

Best regards Stian 

[hypergear]

5 hours ago, Genifx said:

See you make a version of the g25-550 and. 660 aswell. Do you have any test of the smaller turbos on the rb25det for us that not hunt big power but whant a good responsive setup for a unopende engine? Looking for a good upgrade for my rb25 powered Datsun 260z. Whant something around the 350-400whp mark. And dont whant a high flow.

Best regards Stian 

Hi I found G25 turbine is too small for a Rb25det motor. I recommend our ATR43SS-2 in T3 .71 turbine, its very similar to a G30-660 with better response. Its supplied as a brand new turbo internally wastgated.  

[Adz2332]

5 hours ago, hypergear said:

Hi I found G25 turbine is too small for a Rb25det motor. I recommend our ATR43SS-2 in T3 .71 turbine, its very similar to a G30-660 with better response. Its supplied as a brand new turbo internally wastgated.  

How many kws can you see out of it?

[Adz2332]

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

 

What power do these roughly make?

[hypergear]

Assume the application is for internal gate. 

Far as internal gate concern SS-2 makes around 300rwkws on P98 fuel in either .63 or .71 turbine housing. Response are about the same between the two. 

[Adz2332]

22 minutes ago, hypergear said:

Assume the application is for internal gate. 

Far as internal gate concern SS-2 makes around 300rwkws on P98 fuel in either .63 or .71 turbine housing. Response are about the same between the two. 

 

Can you link me to the correct one on your site?

.71 P98 definitely hit 300kws without being to laggy?

[hypergear]

Yes correct. Link is at:

https://hypergearturbos.com/product/atr43ssiwg/

SS2 Profile, T3 .71 Turbine housing, Ball bearing upgrade, and oil line kit. Thats pretty much it.

 

Edited June 26 by hypergear

[Genifx]

8 hours ago, hypergear said:

Yes correct. Link is at:

https://hypergearturbos.com/product/atr43ssiwg/

SS2 Profile, T3 .71 Turbine housing, Ball bearing upgrade, and oil line kit. Thats pretty much it.

 

Thank you. Was going for a Pulsar g25or30/660 but then i will look at this. 👍

Quick spool up and respons is the main thing in this can aswell as the sweet sound of the g-series turboes.

Hard time to find ppl using in the size cus every one that post dynos is almost only big power.

Dont know if i can manage to fit a new exhaust manifold this year or if i have to use the stock the first year.

[Adz2332]

On 26/06/2024 at 11:36 PM, hypergear said:

Yes correct. Link is at:

https://hypergearturbos.com/product/atr43ssiwg/

SS2 Profile, T3 .71 Turbine housing, Ball bearing upgrade, and oil line kit. Thats pretty much it.

 

How much more power and lag does the ss3 make?

[hypergear]

SS3 has very similar to a SS2. It needs to be externally gated for boost control. Performance wise about 60kws more in comparison.

Edited July 21 by hypergear

[Adz2332]

10 hours ago, hypergear said:

SS3 has very similar to a SS2. It needs to be externally gated for boost control. Performance wise about 60kws more in comparison.

Thank you, damn want to stay internal. Just have to replace with forged pistons and rods now. So was going for a few more kws

[Adz2332]

On 26/06/2024 at 11:36 PM, hypergear said:

Yes correct. Link is at:

https://hypergearturbos.com/product/atr43ssiwg/

SS2 Profile, T3 .71 Turbine housing, Ball bearing upgrade, and oil line kit. Thats pretty much it.

 

How much difference going internal to externally gated?

[Adz2332]

What's the difference between the ATR43SS ss1 and ss2

[hypergear]

ATR43SS-1 is better suited for a RB20det engine. SS-2 is suited for a Rb25det engine. Externally gated kit is highly recommended as it makes more power on less boost pressure with higher power ceiling. I've attached an example of our high flowed OP6 turbocharger running both internal and external gate.  Turbo is boosted to a point that no more power could be made. Car's an R33 with built Rb25det engine. 

[Adz2332]

Do you have any graphs for your R33 GTST 21U G3 450HP high flow with ball bearing upgrade?

How does this compare to the atr43ss-2? 

In power and response 

[hypergear]

The SS-2 made 317rwkws V 21U G3 high flowed made 282rwkws at a point that no more power could be made on a built RB25det Neo motor on P98 / Ron 93 fuel. 21U high flow is about 400RPM more responsive making 20psi by 3600RPM, while SS2 made 20psi by 3800RPM.  High flowed Rb25det turbo drives very similar to stock turbo.

My recommendation is still ATR43SS-2 in T3 .71 rear housing with ball bearing core, as it has stronger power delivery with higher power capacity. 

[Adz2332]

Thanks mate