Jump to content
SAU Community

What Exhaust Housing Is This?

Rekin

By Rekin,
in Engines & Forced Induction

 Share

Recommended Posts

Rekin Grand Master

Rekin

Posted
Posted

Hello,

Ive purchased a GT2530 turbo from yahoo auction which was listed for Skyline RB's.

It arrived yesterday and noticed that the exhaust housing was nothing similar to rb20/rb25...

I was wondering if anyone could identify the exhaust housing for the turbo so I can sell it.

If anyone wants it, you can have it for $900ono.

The little Garrett plate has seemed to be snapped off the turbo, so cant identify it with any model numbers..

It has a T3 flange, just the exhaust housing doesnt match up with standard rb20/rb25 dump pipe..

Hopefully someone can recognise it or it will become an expensive paper-weight :P

Cheers

Patrick

img1748mediumsc8.jpg

indexun3.jpg

img1743mediumar5.jpg

Link to comment
https://www.sau.com.au/forums/topic/237440-what-exhaust-housing-is-this/
Share on other sites
BHDave Grand Master

BHDave

Posted
Posted

it's an early hks turbo (either 2530 or 2535) that used to be sold with a cast dump to suit an rb front pipe.

Very early 2530's came out this way, as did the old t3g's. I have seen the dumps first hand.

The outlet looks very similar to an IW t2 turbo so all is not necessarily lost. Just a bit more custom work....

discopotato03 Grand Master

discopotato03

Posted
Posted

Interesting that it has a "Garrett" housing on it - and you mentioned 0.67 A/R . Can you double check it to be absolutely certain it doesn't say 64 or 0.64 because Garretts usual T25/28 flanged GT28 housings are normally 0.64 A/R ratio .

Me wonders if the later HKS branded turbine housings were also 0.67 A/R because that would explain partly why some HKS spec turbos ie GT2530/GT2535/GTRS(GT2871R 52T) make slightly more power than even a very close spec Garrett market turbocharger .

I remember seeing a bush bearing turbo at Turbologic some years ago that used I think the same turbine and it had a "T3" flanged Garrett housing on it . Have to look closer into this as it may have the same turbine housing as that early HKS one in your pics .

If this is the case we may have stumbled upon the critical thing that allows us to mount GT28BB Garrett marketed turbos on RB engines and save a few bucks over expensive HKS units .

If there are any part numbers cast into that turbine housing of yours can you let me know and I'll chase it up .

Cheers A .

Ceffy_SA Collaborator

Ceffy_SA

Posted
Posted

Hey Rekin, as i said on NS.com im using the exact same turbo currently on my RB20, i bought it as a HKS T3G turbo with the stock cast dump pipe to suit it, bolted straight up to my RB20 and is making some very decent power on my engine with minimal lag for a RB20. Mine still has the ID plate on the turbo, i can get the numbers off it tonight if that will help anyone?

Rekin Grand Master

Rekin

Posted
  • Author
Posted
Interesting that it has a "Garrett" housing on it - and you mentioned 0.67 A/R . Can you double check it to be absolutely certain it doesn't say 64 or 0.64 because Garretts usual T25/28 flanged GT28 housings are normally 0.64 A/R ratio .

Me wonders if the later HKS branded turbine housings were also 0.67 A/R because that would explain partly why some HKS spec turbos ie GT2530/GT2535/GTRS(GT2871R 52T) make slightly more power than even a very close spec Garrett market turbocharger .

I remember seeing a bush bearing turbo at Turbologic some years ago that used I think the same turbine and it had a "T3" flanged Garrett housing on it . Have to look closer into this as it may have the same turbine housing as that early HKS one in your pics .

If this is the case we may have stumbled upon the critical thing that allows us to mount GT28BB Garrett marketed turbos on RB engines and save a few bucks over expensive HKS units .

If there are any part numbers cast into that turbine housing of yours can you let me know and I'll chase it up .

Cheers A .

Hey, very interesting to read, thanks for the info.

I found some numbers, let us know if they mean anything :mellow:

img1754mediumvt7.th.jpgimg1762mediumqv8.th.jpg

img1760mediumci2.th.jpgimg1765mediumqc0.th.jpg

The numbers on the side say something like;

M3

67

H4

558

Hey Rekin, as i said on NS.com im using the exact same turbo currently on my RB20, i bought it as a HKS T3G turbo with the stock cast dump pipe to suit it, bolted straight up to my RB20 and is making some very decent power on my engine with minimal lag for a RB20. Mine still has the ID plate on the turbo, i can get the numbers off it tonight if that will help anyone?

Hey, Would you happen to have a part/model number for the dump pipe?

If i can get a number, i could probably chase one up through HKS etc

Thanks :rant:

discopotato03 Grand Master

discopotato03

Posted
Posted

Something I forgot to mention was that generally Ball Bearing type "GT28" style turbine housings have six holes and bolts to clamp the crab plates onto the turbos center section (bearing housing) .

From what I can see yours has four and that sometimes means it's of a bush bearing type turbocharger , they possibly interchange so that could be one answer .

I'll have to look into the old TA/TB34 series turbos to see if they used that housing .

A .

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • Kinkstaah
      RB25DE NEO with Haltech ECU

      By Kinkstaah · Posted

      @Haggerty this is your red flag. In MAP based ECU's the Manifold pressure X RPM calculation is how the engine knows it is actually...running/going through ANY load. You are confusing the term 'base map' with your base VE/Fuel table. When most people say 'base map' they mean the stock entire tune shipped with the ECU, hopefully aimed at a specific car/setup to use as a base for beginning to tune your specific car. Haltech has a lot of documentation (or at least they used to, I expect it to be better now). Read it voraciously.
    • GTSBoy
      RB25DE NEO with Haltech ECU

      By GTSBoy · Posted

      I saw you mention this earlier and it raised a red flag, but I couldn't believe it was real. Yes, the vacuum signal should vary. It is the one and only load signal from the engine to the ECU, and it MUST vary. It is either not connected or is badly f**ked up in some way.
    • Murray_Calavera
      RB25DE NEO with Haltech ECU

      By Murray_Calavera · Posted

      @Haggerty you still haven't answered my question.  Many things you are saying do not make sense for someone who can tune, yet I would not expect someone who cannot tune to be playing with the things in the ECU that you are.  This process would be a lot quicker to figure out if we can remove user error from the equation. 
    • MBS206
      R32 GTS (RB20DE) Injectors Replacement

      By MBS206 · Posted

      If as it's stalling, the fuel pressure rises, it's saying there's less vacuum in the intake manifold. This is pretty typical of an engine that is slowing down.   While typically is agree it sounds fuel related, it really sounds fuel/air mixture related. Since the whole system has been refurbished, including injectors, pump, etc, it's likely we've altered how well the system is delivering fuel. If someone before you has messed with the IACV because it needed fiddling with as the fuel system was dieing out, we need to readjust it back. Getting things back to factory spec everywhere, is what's going to help the entire system. So if it idles at 400rpm with no IACV, that needs raising. Getting factory air flow back to normal will help us get everything back in spec, and likely help chase down any other issues. Back on IACV, if the base idle (no IACV plugged in) is too far out, it's a lot harder for the ECU to control idle. The IACV duty cycle causes non linear variations in reality. When I've tuned the idle valves in the past, you need to keep it in a relatively narrow window on aftermarket ecus to stop them doing wild dances. It also means if your base idle is too low, the valve needs to open too much, and then the smallest % change ends up being a huge variation.
    • Haggerty
      RB25DE NEO with Haltech ECU

      By Haggerty · Posted

      I guess one thing that might be wrong is the manifold pressure.  It is a constant -5.9 and never moves even under 100% throttle and load.  I would expect it to atleast go to 0 correct?  It's doing this with the OEM MAP as well as the ECU vacuum sensor. When trying to tune the base map under load the crosshairs only climb vertically with RPM, but always in the -5.9 column.
×
×
  • Create New...