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hypergear

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Everything posted by hypergear

  1. hypergear
    Just stay on the conservative side I have applied deduction.. To calculate the total power level out put as a twin, the usual formula is 100% power capacity of the first turbocharger + 70% capacity of the 2nd turbocharger. So if the high flowed turbochargers are capable of 400hp each then as a twin they support 680HP, not 800HP. Which factory housing can support up to 350HP each, which works out to be 570HP as twin. another thing to keep in mind is that we are still dealing with a stock .48 rear housing, while the -5 has .64 rear housing. That makes a huge difference. Means to match the flow the exhaust side has to be larger. The capacity from standard highflows would be very similar to what you would get out of two -5s.
  2. hypergear
    With the bolt on SS2, Just had a quick chat with Trent today. The boost became controllable after the long stud securing the dump pipe was replaced with a shorter one. The car is currently sitting at 20psi and making 301rwkws on pump 98 fuel. He also said the gate is only restricted to a 40 degrees swing which they were engineered and checked to 70 degrees. I'm not sure if the long stud has forced its way into and bent the wastegate assembly that made the disc catching on to the rear casting, which I understand it would be torqued up tightly. Trent is trying to lower 3psi and fill in a little bit of extra timing. I will be heading down there to inspect the turbocharger on Thursday and it will be checked out and repaired by then.
  3. hypergear
    Result sent in from another customer. This time it is a ATR43SLSS2 turbocharger in a 8cm turbine. It is fitted on to a FJ20det engine in a Datsan 1600. With supporting mods final result of 257rwkws on pump 98 fuel.
  4. hypergear
    The billet SS1 in.64 rear housing would definitely be recommended for a responsive 200rwkws application.
  5. hypergear
    For power and response on RB20det SS1 or SS1.5 .64 is perfect and made for that engine. Those two are highly recommended over high flowing. Alternatively yes we can also high flow the stock turbocharger to be responsive which will be maxing around 200rwkws mark.
  6. hypergear
    Some update from tuner Toshi. This is the first result from our updated highflow profile, Which has a set of customized wheels. quoted from Toshi's thread: R33 Hypergear R33 hiflow turbo, Z32 ecu nistune 241kw at 15psi Looks like its out of injectors, at 20psi it is expected another 20~25kws gain. I'm not too concert about peek power, however quite pleased with its boosting behavior. In which it did manage to hold straight to red line without tapering.
  7. hypergear
    Its not "magic", it is ingenuity, more because enough work and researches has been put into this item, specifically for a Rb25det. Results came from the dynosheet section that has same setup as mine The dyno automatically pickup data in set roller rate and completes in a given time. So at the point of where data began to plotted car is already on fully throttle, in which makes no difference to boost generating behavior. You can start plotting from 500RPMs and it will still match identical RPM/Boost plots. Plus turbocharger in this size is not sensitive to ramp change, lets give / take 1.3 sec makes 0 differences.
  8. hypergear
    I found this on the dynosheet section, It is a GT3582 in a .82 rear housing, This is a very good comparison to mine which has a more "Rb25det defined" 3582 equivalent turbocharger. Compare with boost plot: Which is identical to my controlled run (thick yellow), Thin yellow is the defined version. Power wise it made 445rwkws @25psi @ 4500RPM. It is not that bad, still not a responsive turbo for a daily, which I'm working on. Depending on how Cheap a GT3582 can be obtained, I can certainly modify it to the "defined" version at a fee. After the completion of research.
  9. hypergear
    I believe this is as responsive as I can get a 3540 to be in its original form by altering its housing while not trading off the top end power. Since the configuration of the housings are set, I will then work on the wheels matching up the same sort of HP while not trading off response. Pretty much all other compressor wheels are developed based on the same way.
  10. hypergear
    Well the larger the blades are engineered the more HP it makes and laggier it gets. I'm retrieving the size of the wheel while increasing the blade size for better response. 450rwkws is plenty, I want it to delivery the power in a away that is smooth and drive able as daily. Please ask Trent to unhook the actuator and see if the gate free moves by hand. If so then just unload the actuator and see if the boost controlling device is working.
  11. hypergear
    I'm aware the JJR's dump don't match gasket 100%. Here's a small tutorial on how to fix it: http://www.skylinesaustralia.com/forums/topic/261613-hypergear-hiflow-service-continued/page__st__6340 Or could be the stud is to long unless the lever is hitting on the outside part of the dump pipe. did Trent had a play or unload the actuator? Unhook the actuator and see if it can be opened freely by hand. What sort of power did it make on 30psi?
  12. hypergear
    ATR45BB turbocharger base result 93 model R33 GTST Forgied CP pistons, valve springs Tomei 264/8.9 cams, Stock cam gears. 800cc injectors 600x300x75mm Front mounted cool Brae high mount exhaust manifold HPVA 50mm external gate plumbed back. Xforce 3inch Cat back exhaust 100 Cell Cat Profect B electric boost controller 4inch intake pipe Adaptronic Plugin Power 445rwkws @ 25psi @ 4500RPMs, E85 Fuel
  13. hypergear
    the .70 is even laggier. I've trailed both on road. However .70 housing should give me little bit more top end. The run above is running a .50 cover. The other run compared to was a GT3582 in a .82 turbine which I presume in a .70 comp. This is a base run to compare the billet wheels with. Not all drawings works and some performed worse then standard. So this is a base curve to compare to.
  14. hypergear
    The genuine 3582R was laggier. It was spot on to the none VNT boost curve. First prototype is installed. Feels like I just gained even more power without better response.
  15. hypergear
    Yes this is a ball bearing core, this turbocharger is direct replacement of a XR6 BA so it is in fact same as a 3582R. We did comparisons against an actual 3582 in .82 rear on RB25det, they are roughly 400RPMs laggier, which is similar to the Thick yellow curve from few weeks ago, how ever not a lot of differences in terms of power delivery curve. Those cams, I have a feeling that they've made the car laggier compare to stock items, Which I'm aware SR20dets do pickup quite a bit of lag by going larger.
  16. hypergear
    I just made 596rwhp on stock intake manifold. It can pump more then that.
  17. hypergear
    This is running VNT, hence the difference in response. Thats on the high mount, external gate and e85. for some reason the boost curve appears laggier on paper then on road. I can see my boost gauge sitting at 15psi at 4000RPM 4th gear on the high way. Since its just a controlled test so never mind as long as the billet series works better. If I can get rid of 300rpms of lag it would be sweet as for a daily. Definitely very fast, I need to a 4WD system to put all of those on the road.
  18. hypergear
    Here's controlled run from today. The maximum power reached was 445rwkws with 25psi @ 4500RPMs. ^^^ Boost level comparison result from previous run using the same turbocharger. No, its not responsive for a daily, how ever not bad considering the peek power it managed. This is our base run using standard cast compressor wheel, my billet wheel versions will be act against the result above, and the desired out come would be for better power and response. 460rwkws with 25psi by 4300RPM would be a nice goal to reach
  19. hypergear
    After some trailing and testing with using the G4 chra the housing type and profile bell shapes are pretty much set to optimum for a Rb25det engine. So far this is the most responsive 3582 equivalent turbocharger I've trailed. Obviously it will be a controlled run finding out what my cam behaviors are and gathering data for the SS4 alpha series to run against. Trent and Cat just had their fun in China and now back to work. My dyno run is booked in for tomorrow, and hopefully things will run smoothly.
  20. hypergear
    I've reconditioned many XR6 BA turbochargers up to date, the highest power level I've seen was 430rwkws on E85 fuel. Probably because there are so many of them, I only found a small percentage of cars been modified. Out of the minority the average power level is between 330~360rwkws, many of them been autos. On a Rb25det this turbocharger is horribly laggy, throttle response was poor, definitely nothing enjoyable for a daily. Just for some fun, I dragged a close customer's R33 that currently has a GT3582R .82 turbocharger fitted, with my Kia sportage at his private run way at a farm yard. He's car is "said" to be tuned at 397rwkws, and my Kia has only 176fwkws. He wasn't been able to beat me till 140KM/H, and obviously at that point I could see him flying pass like a rocket. The 3576 isn't much better then a 3582, which I originally thought it might pickup some response, the difference was very marginal, but it did pull 347rwkws on a stock manifold internally gated at 29psi. I have finely tuned a ATR45 turbocharger (XR6 BA replacement) to work with a Rb25det, which I will use it for a base map running against those billet SS4 prototypes that I've made. At this point it is pretty derivable unlike the original item. I should have some results tomorrow, and very interested to see if HTA can tackle the lag issue better.
  21. hypergear
    Depending on what the goal is. The standard turbochargers can be high flowed while still been stock boltons without any fabrications. The factory rear housing is in .48, means the maximum the exhaust side can flow with a T28 exhaust wheel is about 310HP each. Based on the capacity of the turbine side, we can high flow with our SS-1 64mm billet compressor wheels. So the maximum end result from high flowing would be about 570HP or 363rwkws as a twin. Alternatively we can also high flow with a larger 75mm exhaust wheel and a 68mm SS1.5 billet compressor wheel which will instantly boost the power level to about 400HP each using factory .48 turbine housings, how ever running those as a twin would be considered pretty laggy for road driving.
  22. hypergear
    Check Brae auto. They are $1100. I'm currently using one on my test car. been through plenty of 30psi+ red hot dyno runs and works great.
  23. hypergear
    Our last communication was on the 12/10/2012 which you inquired about a rear housing for a 2nd hand turbocharger we've built for some thing else in 2009. I've never forgotten or admitted "forgetting" on given any information inquired. Even if I did forget initially, I would never mention about a drilling a "oil restrictor in the block" after. I don't recall any communications after that date, but let me know if you want to get it repaired. I made majority of RB customers buying the oil line with the turbocharger. Which the speed flow fitting that comes with the oil line replaces the restrictive benjo bolt that is on top of the turbocharger. There is no oil restrictor on the actual engine block or the benjo bolt goes on to the engine block.
  24. hypergear
    We usually sale them for $1850 with a .82 rear housing and .60 Anti surge front. All genuine Garrett items and housings.
  25. hypergear
    I don't remember sending turbos to that workshop. for stock manifold internally gated results they all matched up pretty well, and many are taken from customer's cars, So unless they are referring to externally gated results, then they can't reach that unless using the same mods running at the same boost level. I take precise measures when quoting up people with the estimated HP to boost level, which is the reason that I asked alot of questions, based on data give the GTx3076 is not a very good turbocharger for internal gating, specially working with factory exhaust manifold. With the larger cams and type of pistons that I've been told (unless they are wrong) I believe its going to run extremely hot in upper rev range, wither 330rwkws on pump fuel is archiveble or not is questionable. I have so far never seen 330rwkws on a GT3076 on pump 98 running stock exhaust manifold and internal gate. Which I'm pretty sure they will be pushing to sell an externally gated high mount setup in very near future.
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