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hypergear

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Everything posted by hypergear

  1. hypergear
    Idential specification. In sleeve bearing.
  2. hypergear
    Chris how about I will machine you a ATR43 .63 Rear housing for half price of retail. Just see the amount of power gain with bigger housings as I don't currently have a Skyline to get those data my self. Also a Stock RB25Neo should've produced around 210rwkws on 14psi but only 175rwkws out of that dyno. So I guess it is possible the dyno did read out low.
  3. hypergear
    I really don't know why it didn't make power on yours. The CHRA that went into it all OP6 housings are idential. Also most of R33 2IU's people's high flow have made around 235rwkws mark. Status Hub dyno reads within 1 KWs to Mainland roller dynos. it can't be 50KWs off unless the dyno you went on actually read low. also Are you using BP or Mobile 98 fuel? Was your rubber intake pipe sucked shut on boost? Or clutch slip? The .63 rear housing that bolton to your stock manifold and dump cost $500 to make. I will need you to send the turbo back for its housing profile.
  4. hypergear
    With .63 will be looking at 20psi at around 4300RPM. But it will be able to flow lot more power. But either way OP6 rear housing is good enough to flow upto 260rwkws with 98 fuel and a decent tune.
  5. hypergear
    Hard to say. So far I've seen 256rwkws with OP6 Rear housing. and 235rwkws with R33's 2IU housing. We also have another way to high flow which can increase about 20HP more but trade away fair bit of response. Also one more thing I would like to address its funny that not all Turbos that came off a R34 had a OP6 rear housing on it, wither its been changed or came out OEM I don't know. You might want to check and make sure there is a OP6 stamp. This is a reading out of a OP6 housinged R34 Any way, we also have .63 Bolton housing available at this stage. If interested to upgrade please let me know.
  6. hypergear
    ATR28G4 and ATR43G3 is the same turbo. Except ATR43's has bolton turbine housings to suit OEM manifold and dump.
  7. hypergear
    To high flow to 260rwkws you will need the OP6 Rear housing or you can use our .63 ATR43's turbine housing. To high flow with your supplied OP6 Rear housing it will cost $880 with oil line or $1230 with ATR43's .63 rear housing including oil line.
  8. hypergear
    To get 270rwkws we can make it close to it with a R34's OP6 rear housing. The cost for doing that is $880 with oil line. Or we can supply a .63 turbine housing using ATR43G2 CHRA with your stock comp housing for $1230 including braided oil feeding line and 14psi actuator. This is also suitable for all the RB20det engines. Also youtube video for the 344rwkws CA18det dyno run today:
  9. hypergear
    This is the first ATR43 G3's tuning result based on a forged CA18det with 270 / 11mm cams (Still hunting for a Cheap R33 testing car.) car made: 299rwkws / 401.3HP Wheels @ 19psi 344rwkws / 461.5HP Wheels @ 25psi Dynoed and tuned on 3rd gear.
  10. hypergear
    sorry that was for one single turbo.
  11. hypergear
    For turbine wheels update We can change that to GT2860 steel wheels with turbine housing re-profile and wastegate porting for $700 per turbo.
  12. hypergear
    ATR43 is now ready. This is a Bolton turbocharger made for Nissan RB2x engines. Rated from 450HP to 600HP.
  13. hypergear
    The ATR43's shaft is liter, It has less fins and bigger gaps between fins. So compare to TR43i it would pickup better response and make more power with better torque. If you compare dynosheets with ATR43G3 and TR43i you probably find some thing looks like this: I also engineered one with sized and weight reduced shaft using shorter bearings for even better response. But its obviously a stronger turbo with bigger shaft and bearings. So till that gets tested out we will stick to this recipe.
  14. hypergear
    That is for sleeve bearing. BB turbos are roughly 10% better in response. They can be fitted with GT3071 or 76 CHRA. will cost roughly $500 additional.
  15. hypergear
    Thats all cool. If I'm bending any rules I will fix it up. From experience BB turbos are more likely to get cooked. Most sleeve bearing turbos receives greater amount of oil flow and this is built built water cooled. So they are pretty fine. The current Ball bearing turbos runs oil feeding pins on the top with 20thou wholes on both side, Not sure why Garrett designed it that way. But in lot of cases they gets filled from dirt in engine oil which allow bearings to cook. Then they becomes very expansive to overhaul. about 80% of Ball bearing overhaul jobs we currently getting has failed in that manner.
  16. hypergear
    The final decision on RRP is $1250 per unit. Response depends on the HP Profile. Bigger = more power, more torque, more lag.
  17. hypergear
    To high flow GTR turbo using GT2860RS BB CHRA is $1350 each. And we can supply the Garrett unit brand new for $1400 so might not really be worth doing. To high flow with Sleeve bearing CHRA in identical spec is $800 each turbo.
  18. hypergear
    Sleeve bearing turbo require greater amount of oil flow. The bearings needs oil pressure to float. BB does not. BB turbos has roughly 10% better in response. Sleeve bearing turbos are cheaper to build and service. ATR43Gx are made to be interchangeable with Garrett GT3071, GT3076, and GT3582 GT CHRAs. So really comes down on the consumer's budget.
  19. hypergear
    The stock oil feeding line has a oil restriction valve. It is not suitable for sleeve bearing CHRAs. Also Garrett GT CHRAs runs off a different thread.
  20. hypergear
    Below is the commercial version of ATR43. This is now available. The turbo comes in 4x different profiles: ATR43G1: 450HP in . 58 / .63 rear ATR43G2: 480HP in . 58 / .63 rear ATR43G3: 520HP in .63 Rear ATR43G4: 600HP in .84 rear It is designed to bolton to your stock manifold, dump, water, and oil drain. Braided oil feeding line is required and priced at $80 with turbo. All turbos can be built with a Garrett GT Ball bearing CHRA depends on consumer's budget. To fit them to factory intake and intercooler pipes you will also need 2x silicon pipes one in 90 degrees 2inch and the other in 3inch straight. ATR43's .58 and .63 Turbine housing is interchangeable with All ATR28Gx High flows that we've sold. Will gain instant power increasement specially to the ATR28G2 based R32 / R33 xIU high flows, Should have No issues archive upto 270rwkws with supporting moods.
  21. hypergear
    It is strongly recommended that you do keep a BOV. stock or aftermarket. The Surge pressure that comes back when throttle is shut can do lot of damages to the turbo.
  22. hypergear
    That is the CHRA that we normally use for GTR turbocharger high flowing. We will need your factory housings to carry it out. Or we can supply you 2x complete Garrett turbos. I will PM you a quote tomorrow.
  23. hypergear
    For GTRs we can only high flow your stock turbos. They will be in GT2860RS CHRA in Ball bearing or Idential ATR28G1 CHRA in sleeve bearing. High flowed turbos are good for around 550HP as a twin. ATR28G1 Comp wheel and GTR factory Comp wheel CHRA and reprofiled Housings Assembled turbo:
  24. hypergear
    We can build a ATR43 in .63 rear internal gate with 52T 76mm Comp which is good for up to 280rwkws with excellent street response. This turbo will bolt on to all your stock every thing except you need 90 degrees rubber pipe for stock cooler piping and a 3inch straight rubber pipe to connect stock intake pipe, Metal intake pipe is highly recommended.
  25. hypergear
    Most of High flowed turbos are running off a ATR28G2 CHRA. Their Wheels sizes are smaller compare to the xTR43x series to suit stock comp and turbine housings. So it is very important to have a charging system that is balanced, oversized compressors cause surge and rise manifold pressure which force shift the shaft towards the compressor. At a point when over comes the engine oil pressure it will force the thrust collar to eat into the thrust bearing which will develop a shaft play over time. 20 thou and above will cause wheels to hit its housing and turbo fail. With the xTR43x models they are not limited to the size of factory turbo housings. So we engineer the CHRA to a specific HP rating with matching wheels then choice the right size housings that suits different application. Now the ATR43 has been engineered, They are a bolton turbo to suit RB2x manifold, lines, and dump. If you are chasing for high powers they are better recommendations then the stock high flow turbos and cost $500 more ATR43 comes in 3x different profiles which is rated at 450HP, 480HP, and 500HP.
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