HyperGears Twin ATR25 Turbocharger VG30DETT Build up Thread

Discussion in 'Technical' started by HyperGear, Apr 14, 2008.

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  1. HyperGear

    HyperGear New Member

    Our ATR25 High performance OEM bolt on Turbocharger for 300ZX is now produced. We are using this opportunity to write up a project thread of building a 300rwkws VG30DETT 300ZX with our new release.

    The Test car has been imported and landed from Japan. Its a 1990 Model Nissan 300ZX 2+2 twin turbo manual with 3inch twin cat back exhaust. Car drives very smoothly. We will officially work on this project on 1st May 2008, as for now I'm gethering some useful information.

    [​IMG]

    Below information of the ATR25 turbocharger. They are currently retailed at $750 each. They require Braided oil feed lines for installation. You are welcome to see the project outcome before considering to make any purchases.

    [​IMG]

    If you have experience on modifying the VG30dett as well as some useful hints and part list please post up. Thank you all.
     
    Last edited: Apr 14, 2008
  2. 300zx lover

    300zx lover THE F@%KEN ARAB

    what country are these made in?
     
  3. HyperGear

    HyperGear New Member

    Our head office is based in korea, This model is assembled and balanced in Australia. We make all sort of turbochargers. You can visit our website at: www.hypergear.com.au. You are welcome to wait and see the final result before consider to purchase.

    Also the factory Fuel system can deliver 300rwkws no problems? It will be tuned with a Nistune chip.
     
    Last edited: Apr 15, 2008
  4. Chad_

    Chad_ Well-Known Member

    oem bolt on? so these fit on with no modification to the manifold etc? how about the space. have they been fitted to a zed before?

    whats the actuall warranty cover?

    what are you predicting a job like this costing?

    what other mods are you planning to throw in the zed to reach the 300rwkw goal?

    how long do you predict your project will take?

    what is the point of upgrading to these if you going through all the trouble just to run 18psi max ?
     
  5. HyperGear

    HyperGear New Member

    Yes they fit straight on with no modifications. No speacers need. How ever need oil feed lines.

    We fitted 2x into one customer's car from this forum few month ago. So far so good. When working on this job, the only issue was the actuator rod was on the way of the oil filter. Which we have re-designed the actuator bracket in final release.

    Warranty covers for All parts of the turbocharger.
    Job will estimate 3 full days. We try to no work on customer's 300ZX at this stage.
    Its too much of a head fk. This project will be taking as long as it takes there. We are also designing ATR28 which is a 400HP single T28, testing on a S13 at moment, might make a VG30dett bolt on version of that as well.

    Keep in mind this is a small turbo, 18PSI should be good enough for one turbo to archeive 280HP fly wheels. for a twin should archeive 500HP fly wheel. Its using the TR28KAI internals which we've made 228rwkws on a SR20det engine running 18psi single. Any thing bigger then current size is not possible to bolt on.

    At moment I have got/getting Font mount cooler, Exhuast, Nistune chip, fuel pump.

    This car will be tunned at XTC, Been told they can make 300rwkws with factory fuel system, But if not I will be plaining 550cc injectors to max out the turbos.
     
    Last edited: Apr 15, 2008
  6. Chad_

    Chad_ Well-Known Member

    no chance you will run 300rwkw with the stock injectors. you will need to upgrade them.

    what i was really asking was what is the benefit of upgrading to these when they are same size of the stock ones. and also why if you can run the same amount of boost on stock ones. max 18psi...

    so with only those mods and the turbos you hope to get the 300rwkw goal? include the injectors on that list. but anything else?
     
  7. ZYTRAM

    ZYTRAM Formerly known as martini_Z

    I think youll find the max capacity of the stock injectors is around 270rwkw, wouldnt push it past that if i were you. Bigger injectors is definately the go for 300rwkw.

    Its about time someone produced a bolt on turbo for the zed thats easily available in Aus, good stuff! :) looking forward to hearing about the results!
     
  8. HyperGear

    HyperGear New Member

    The turbo is in the same "housing size" as factory Z32 turbos. Comapre the wheel sizes, The housing's been ported in and out to suit the bigger core.

    Well I'm not very professional the VG30dett engines. This is the first one that we are doing as a project for power.

    At moment just:
    Turbos, ECU, Exhaust, Cooler, Fuel pump

    Stand by parts:
    Cam shafts, valve springs, adjustable cam gears, Injectors.
     
  9. Anton

    Anton New Member

    being the same housing size does not tell of thier performance compared to stock, if a turbo has a larger compressor or turbine wheel or higher A/R it will make more power for a given boost level
     
  10. ZX2NV

    ZX2NV Z Racing Evolution

    I think this is a great initiative to pursue. Bringing a more budget friendly turbo solution to the Z32 community has been long awaited. Currently the options are to buy and import from the US which can cost up to and even over 3k a pair, buy a locally produced bolt on Garett kit which is in the vacinity of 3.5 to 4k depending on turbos. Get your oem ones rebuilt and high flowed which can cost around the 3k mark aswell. Lastly buy some stock garett turbos and mod them yourself to fit which costs around the 2k mark if your good with fabrication.

    This will be an interesting thread to watch in the coming weeks/months

    I am interested in the long term reliability of the turbochargers and do you warrant them for race/drag type use aswell

    I would start with a baseline dyno on the car in its current guise, once the baseline power is attained I would fit a new in tank fuel pump to ensure fuel flow at all times as many older pumps still function but lack return flow higher in the rev range.
    Upgrade the injectors to 555cc items or similar
    Fit an aftermarket Nismo or similar fuel pressure regulator to boost fuel rail pressure slightly
    Upgrade the intercoolers or fit a FMIC
    Fit some form of interceptor computer like a SAFC or a well written chip should do the job. Standalone would be ideal
    Make sure the exhaust is in good nick
    Make sure you have zero boost leaks, no error codes and all connectors are in good nick.

    Thats it for starters will add things as I think of it
     
  11. JEDI-77

    JEDI-77 Jedi Master

    very interested...

    to see how these turbos go.... I will need turbos for my future TT conversion, and I just cant afford $3-4K for new, bigger turbos. So I was going to have the stock turbos re-built... but if your turbos prove to be better, then I will seriously consider them. Please keep us posted.

    Cheers
     
  12. Hyper101

    Hyper101 Well-Known Member

    Ive been following some of the Hypergear stuff on other forums, will be interested in seeing how this project ends up. Other good thing is I think the Hypergear workshops are very close to me so I can drop in and have a look.

    Which shop will you be working out of ?
     
    Last edited: Apr 15, 2008
  13. HyperGear

    HyperGear New Member

    This project will be carried out at our Coburg workshop. We are doing a friend's car now, But he's just replacing the blown factory twin.

    Also this newly imported 300Z seems to have vibration. eg. drive over 60KM/H the rear part of the car starts to vibrate. Is this the toll shaft balance issues? Any one had this problem before?
     
  14. JEDI-77

    JEDI-77 Jedi Master

    yes

    in the past, I have had similar vibrations to yours and it ended up being a busted uni joint....

    Cheers
     
  15. ZX2NV

    ZX2NV Z Racing Evolution

    I would also like to add that if a 400hp version were offered also I think it would be potentially a good seller for those seeking a little more power for strip and track work
     
  16. AndyMac

    AndyMac Better than you

    So they are basically speaking Hi-Flowed turbo's. @ $750ea thats a very nice price for a mild upgrade. I'd be very interested to see end results and logevity of these, as while my experiance with hi-flows was good, many others weren't, so yeah, deliver some good results and you'll have some potential in the market.

     
  17. SedatZX

    SedatZX Tyranus

    Interested in how this project turns up!

    But a word of advise, if you've just had the car brought from japan you'll most definately would need to do a 100K service!

    and as for the 300rwkw

    FMIC + Bigger Radiator
    Injectors
    Fuel Regulator
    Fuel Pump
    Turbo Back Exhaust + Hi Flow cats
    Pod Filter
    Electronic Boost Controller
    Apex'i SAFC
    Custom Tune

    chuck in your turbo's and you should easily make 300rwkw if your engine is healthy i might even chuck in Split fire coil packs into the mod list just to be safe.
     
  18. ryanlok15

    ryanlok15 red zedder

    wherebouts in coburg are you, i live pretty close to there and wouldnt mind checking out the operation...but great project non the less:D:zlove:

    Ryan

     
  19. mafi-zed

    mafi-zed the resident hoon

    when BB technoligy is so readily available why did you opt for a 360 degree bearing?
     
  20. Chad_

    Chad_ Well-Known Member

    yup kool thats what i was getting to. as andymac said so in other words these are high flowed turbos. body has been ported and larger compressor wheel etc...

    this will be an interesting project. i know many people out there would be over the moon with 300rwkw.
     
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