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Hypergear Turbochargers and High flow Services Development thread

hypergear

By hypergear,
in Engines & Forced Induction

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Mitcho_7 Mentor

Mitcho_7

Posted
Posted (edited)

Just realized they said there was boost control issues so I guess that would be affecting power up top a fair bit as well.

If it was holding boost to redline I still think itd be 250+

I wouldn't expect it to be hitting 270kw on 20 psi with a 15+ yr old motor.

Edited by Mitcho_7
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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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Birds Grand Master

Birds

Posted
Posted

Wait for the charts gentlemen, no point speculating over power figures or what's responsible for them until we see what the engine is doing. As JEZ said, there's probably a bit more in the turbo if they take the time to sort out boost etc. but for now Kasko should be pretty happy and he looks to be.

Birds Grand Master

Birds

Posted
Posted

Very smooth. Boost tapering off = another 10-20 if you can get it to hold without the engine pinging?

Full boost looks like high 3000's / 4000rpm, I'm guessing.

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Manuel Kasko Grand Master

Manuel Kasko

Posted
Posted

Need ebc to hold boost up top. I'm testing a little mod this weekend and hopefully that changes the boost behavior up to.

Already got a profec b spec 2 installed in it

This didnt help with the tapper.

Seems the actuators are not up to holding the 20psi consistently

Also as DVS said it seems my clutch is either on its way out or needs a bit of adjusting/bleeding

The car feels phenomenal when it comes onto boost and spins 2nd without hesitation cruising.

Next step is a CAI and a box for the pod filter might help a little.

We did back to back power runs on a safer tune and only lost around 1-2kw

Birds Grand Master

Birds

Posted
Posted

Is that same turbo you have birds?

Yeah man.

when it comes onto boost and spins 2nd without hesitation cruising.

How bout that! :)

What size tyres you running?

SimonR32 Grand Master

SimonR32

Posted
Posted

Very smooth. Boost tapering off = another 10-20 if you can get it to hold without the engine pinging?

Full boost looks like high 3000's / 4000rpm, I'm guessing.

Assuming it's 4.11 diff ratio and normalish sized tyres is nearly at full boost at 4000rpm with 180rwkw

Not exactly comparable with a GT-RS

GTScotT Grand Master

GTScotT

Posted
Posted

Assuming it's 4.11 diff ratio and normalish sized tyres is nearly at full boost at 4000rpm with 180rwkw

Not exactly comparable with a GT-RS

180rwkw @ 4000rpm IS comparable to a GTRS, I agree.

Forget about where it hits full boost etc etc. The power @ RPM will tell you what its doing flow wise, which is what counts.

SimonR32 Grand Master

SimonR32

Posted
Posted (edited)

180rwkw @ 4000rpm IS comparable to a GTRS, I agree.

Forget about where it hits full boost etc etc. The power @ RPM will tell you what its doing flow wise, which is what counts.

Every decent turbo makes 180-200rwkw at 4000rpm on a RB25... It can be a T67, 3071, 3076 or HKS 2835pros, they all do it

It's what happens before and after then that makes the turbos different!

Edited by SimonR32
Birds Grand Master

Birds

Posted
Posted

Every decent turbo makes 180-200rwkw at 4000rpm on a RB25... It can be a T67, 3071, 3076 or HKS 2835pros, they all do it

It's what happens before and after then that makes the turbos different!

areyounotentertained.jpg

GTScotT Grand Master

GTScotT

Posted
Posted

Yeah, so doesnt a GTRS do roughly 180-200 @4000 and end up around 250 by 7000? LOL

So its more or less hitting GTRS benchmarks, OK glad we agree. :whistling:

Birds Grand Master

Birds

Posted
Posted

If the turbo can hold boost for the upper RPM, there's no reason it can't make 260-270 IMO, so no it's not comparable to a GTRS...it's slightly better :P

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