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Hypergear Turbochargers and High flow Services Development thread

hypergear

By hypergear,
in Engines & Forced Induction

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Genifx Newbie

Genifx

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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 

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Lithium
Lithium

I was reading through the thread and was going to weigh in anyway, though looks like you're very much on the page I am reading from - so I'll +1 with with a bit more anecdotal evidence to support it

hypergear
hypergear

The ATR28SS15 would be a perfect turbo for your application. I didn't look into some thing even smaller as it doesn't make that much of a difference in response but did loses quite a lot of power. I'

Dose Pipe Sutututu
Dose Pipe Sutututu

^ lol... maybe I'll use a 3" intake pipe and add in more bends.. that usually gets the suuuuuuuuuuuuuuuutuuututuutut going LOL. Anyhow, some real world facts to back up the results.. errbody likes ti

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hypergear Grand Master

hypergear

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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.  

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Adz2332 Grand Master

Adz2332

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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?

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hypergear Grand Master

hypergear

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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. 

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Adz2332 Grand Master

Adz2332

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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?

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Genifx Newbie

Genifx

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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.

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hypergear Grand Master

hypergear

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

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Adz2332 Grand Master

Adz2332

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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

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hypergear Grand Master

hypergear

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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. 

op6powerall.jpg

op6boostall.jpg

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Adz2332 Grand Master

Adz2332

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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 

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hypergear Grand Master

hypergear

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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. 

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