Jump to content
SAU Community

hypergear

Members
 View Profile  See their activity

  • Posts

    4,102

  • Joined

  • Last visited

  • Days Won

    25

  • Feedback

    100%

 Content Type 

Everything posted by hypergear

  1. hypergear
    I have a feeling this prototype one is going to push close to 300rwkws which wasn't what I'm hopping for, tune booked in on Monday so I should find out what happens. The current SS would push out 250rwkws with factory response. As for the Holden VL we normally high flow the factory turbo with 3576 equivalent with our custom 58T 76mm comp wheel and .70 comp. That’s enough for it to produce around 300rwkws with pretty good response. Or you can use ATR45 in .82 rear, which is rated to about 650HP. Stock comp housing is not in my preferred list unless used for KAI or PU profile high flows. They've got an surge grove just above stock comp wheel. Once machined to fit larger comp wheels, it leaves with a shallow grove in between the upper and lower blades. That acts as a Anti-surge slot which has small affects on mid range and top end power. PU/KAI profile with surge slot removed and intake nozzle back cut and shortened
  2. hypergear
    Can be ft into stock housings, but I would perfer to have our .64 custom nozzled T3x Nissan patterned housing for best out come.
  3. hypergear
    This Garrett turbo was brand new when supplied, and this is not the first time I've seen this happening, I had few GT30 and GT28 high flowed turbos sent in for larger turbine housing which found to have burnt turbine wheels. I have made an warranty inquiry for this guy which has been refused. Garrett blamed bad tune, I think its the materials used is either not heat resistant enough or just too thin. I have no involvement in building this turbo and not the right person in sorting other people's product / service issues.
  4. hypergear
    The boost curve is under the power curve on both of those. and yes I was getting 18psi pre 2500RPMs with the SS-2 profile. They were some of the early runs I've done all running 14psi actuator with pump 98 fuel. I've later re-dawn the actuator with wastegate setup, changing the traditional single spring to a twin spring setup, current actuator runs minimum of 18psi with no boost controller, that made lot of differences. This is one of my custom made turbine wheel on OP6: http://www.digi-hardware.com/images/dynosheets/atr43/op6highflow321rwkw.jpg Its a duel ceramic ball bearing high flow setup based on a OP6 turbine housing internal gate at 24psi with pump 98, 345rwkws on 28psi. Should increase mid range by 15% and push almost 400rwkws on E85. Traditional GT30 turbine will not be able to flow that, sierra wheel might if cropped out heaps which will not have the same mid range. I'll be pretty keen to trail few of the larger profiles on M35 down the track, hopefully be making the same sort of power.
  5. hypergear
    based on RWKWs vs RPM I only said its not responsive if that was on a RB25det, not auto VQ25det. my apologies I must've miss read as I thought that was from a Sierra high flow. I've fixed the link on the VQ25det high flow profiles based on Rb25det. Which is what we've been high flow VQ25det turbos with. I will post results when I get them sent in from our customers.
  6. hypergear
    Your result turned out to be similar as the Cropped Sierra high flow based on a OP6 Rb25det: I'm sure it works great. But I won't call that responsive for its power if it is on a RB25det. Any way, we only use 2x profiles for the VQ25det high flowing. Based on Rb25det ATR43SS-2 profile in OP6: http://www.digi-hardware.com/images/dynosheets/atr43/atr43ss2250rwkw.jpg and ATR43G1 profile in OP6: http://www.digi-hardware.com/images/dynosheets/atr43/253rwkwsop6highflow.JPG ATR43SS-2 profile is higher rated, as its got about the same response as the stock turbo while providing more torque and power on factory setup.
  7. hypergear
    At moment all my test results came from Rb25det, But by experiences doing high flows for M35 customers I'm aware how different wheels would affect its driving ability. I found Garrett GT30 turbine wheel is abit restrictive for stock housing. I haven't seen one managed to flow more then 260rwkws internal gate on stock housing. The once that you've seen making 270rwkws on Rb25dets is a cropped version of sierra wheel. I sure the sierra turbined high flow you've got will out perform the GT3071 in peek power. In regarding to the customized turbine wheel that I've drawn and made early 2010 have proven making more power with better response compare to the old sierra setup. Assume if a turbo made N power on a RB25det is there a formula that we can calculate of what it would make on a VQ25det?
  8. hypergear
    Actually I have done few of those turbos, and I'm fully aware of what those are like. They aren't same as Rb25det skylines, to high flow them we generally use 2871 52T equivalent or a 3071 52T equivalent profile. They produce very good midrange, and tops out around 250rwkws which is what you really want in a wagon with the stock auto. I did use the sierra wheels but not in my preferred list, standard don't flow enough, once cropped it gives this big wack of power increase within very short RPM range after certain RPMs, the GT28 turbine wheel and our customized GT30 turbine wheel are lot smoother on road. I'm not a big fan of BB CHRAs even thou we can build them, definitely result none difference working with stock housings. The theory only support them assume they work in fully clean oil, but did not consider much with oil drag, as well as engine oil contamination, I personally think its hard to not have any engine fillings in the oil on a 15 years old every day driven vehicle. on other hand small amount of metal particles can only leave a small scratch on the bush on sleeve setup which gets filled by compressed oil results no difference in turbo performance. just my 2C
  9. hypergear
    Yes it will fit and works fine.
  10. hypergear
    I will need to modify your turbine housing for that to work. So you need to send in your turbine housing.
  11. hypergear
    Those are $1450 inc GST, oil line and high pressure actuator. I have result of it on Rb25det and CA18det only. The difference between the RB20det profile and Rb25det turbo profile (the billet BB) is the turbine wheel and rear housing. Reason I don't use the billet wheel as a more responsive alternative please refer to the drawing of the billet wheel in page 69. Thinner hub = larger blades = greater flow per rotation = greater HP = greater resistance per rotation = greater lag How ever on a RB25det this tinny amount of lag is not very noticeable, but definitely made more mid range, I don't think it would peek as much power as the ATR43G3s but definitely fast on road with excellent driving ability.
  12. hypergear
    At moment not. only been told its responsive on road by other customers. But I do have some results of them on CA18det, not sure if that helps.
  13. hypergear
    SS is already complete there are 2x profiles one's. Both in .64 rear with .60 comp. Those won't make huge amount of power on RB20dets but good for a responsive street / drift car. That billet SS with ball bearing I've built is aimed at RB25det.
  14. hypergear
    I've updated prices for them in page 1. The ATR43G3 .82 rear with .70 comp externally gated in T3x flange and 5 bolt T4x dump pattern is $1100 inc GST, oil line is $80.
  15. hypergear
    little technical hint which I usually don't give out. By increasing the clearance of the blow nozzle of the turbine housing to turbine wheel can reduce EGT at high RPMs.
  16. hypergear
    Need to run wastegate controller to hold that sort of boost to red line on a RB20det turbo. I haven't had much experience with RB20 actuators as most of what we've got are Rb25 turbos. To test it simply hook on a gauge to a compressor nozzle and see at what psi it starts to move. RB25det once pretty much started to let loose just under 2psi, this is assume there is no back pressure. With back pressure I think it starts to let go as soon as it hits boost. For people whom orders bolton Rb20det turbos we normally modify ATR28G1 / G2 in .64 rear with T3x flange and 6 bolt patterns (current ATR43SS profile). Those are close to stock alike response and rated to around the 200~230rwkws mark. I'm working on a drawing of a adjustable actuator at moment, which is basically an reversed drawing of an external gate that you can change spings or load the spring with a pressure plate. Also ATR43 is now available in 3x different bolt patterns: Naked suitable for externally gated application, Vband internally gated, and Nissan RB2x OEM. They are priced referring to the amount of time, material and work required.
  17. hypergear
    The Just jap ones don't fit. Have a read at page 55 to 61 there are plenty of info on how to setup a hard intake pipe and where AFM and BOV should go. Also stock actuator starts to open around 2psi and high pressure actuator starts to open at 15psi. That makes a difference in response as well.
  18. hypergear
    mmm... I'm not very convienced till you get a 3inch hard intake pipe made with a high prssure actautor installed. If that still doesn't work you can trade it back for a SS high flow. But either way its won't have stock alike response
  19. hypergear
    Sorry I only some data from those GTR high flows at this stage. But thanks for offering.
  20. hypergear
    you need to remove the T piece then connect the boost nipple to the actuator. The boost controller goes in between. Left is a VL holden turbo, right is an R33 Rb25det S1 turbo.
  21. hypergear
    Well with this SS prototype profile I'm expecting it to make an street friendly 260rwkws. I might be able to squeeze out 300rwkws+ since the billet comp wheel we've machined has larger blade area then the casted 71mm wheel. How ever by altering the blow direction for faster shaft speed also picksup heat. We see how it goes. Mill-180: I would be expecting your car's got all the fuel mods, ECU, cooler, free flow exhaust and hard metal intake pipes. I will refund you 30% of the high flow cost after have your dyno results received. I'm expecting them to make around the 320awkws mark.
  22. hypergear
    might have been a 8:1 compression pistons. You can use it to run lots of boost if that is the case
  23. hypergear
    This is a more detailed DIY guide as I've installed an ATR43SS today. The whole job of remove and install took 3 straight hours with an licensed and experienced mechanic on site.
  24. hypergear
    The turbo’s installed. Here are some DIY information, I've divided it into 9 steps, I will post them at the DIY section. you can check them out on: DIY, Click Here I’ve set it to run on 15psi, Its very noticeably more responsive with blow angle modification done. I haven’t driven it hard yet, its making positive boost on from 2500RPMs 2nd gear and pulls hard to 7000RPMs. The power delivery was smooth like factory turbo. Its very quick from 0 ~ 120KM. Will get it tuned and post some results coming week.
  25. hypergear
    Little update for the SS profile: Above is running a Duel ceramic ball bearing cartridge with light weight billet 71mm comp wheel in .63 rear and .60 comp. I've modified the blow angle inside the turbine housing which might work better or might not. I will explain the concepts in it if it can prove better result then traditional. Be installing it tonight and uploading a proper DIY guide.
×
×
  • Create New...