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hypergear

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Everything posted by hypergear

  1. hypergear
    It certainly feels like the case, I guess Nissan did put in lots of thinking in their design. Also it leads me to think if the upper blades do any thing if the anti surge slots are set in between. I might just machine them all flat which leaves more induction area. Also I don't remember seeing any anti surge slots in the new machined wheeled turbos that Garrett is bringing out, apparently they don't run the lower blades.
  2. hypergear
    That only acts after the throttle is shut. The surge slots releases surge while accelerating. Ie. exhaust wheel still spins while I’m half throttle, how ever the open on my throttle body does not create enough volume to swallow all that boost. So some bounces back, creating this Tu tu tu sound. I've seen quite few people mentioning that in the force induction section. But how much pressure exist while throttle is fully opened, If so, having the slots would show a increase in response.
  3. hypergear
    Not all true. engine normally surges on low rpms while throttle is half closed. So its really taking out the opposing force out of the comp wheel. The exducer or the bottom blades throws air out so that leaves more access area. Thats all theory, and every one believes in different things. So I'm testing it out.
  4. hypergear
    To profile them we charge $150. Have to modify that housing to suit the BB bearing housing as as its made for a sleeve bearing core. Response its going to be like 20psi @ 4800RPMs mark. If you want there is a small trick that we do to the OP6 .63 housings so they can flow heaps more. I think if I get that done you should be able to pump 330rwkws+ without losing any response. Cost less also.
  5. hypergear
    To get that comp housing with the surge slots to a ATR43G3 assume you have the .60 comp will cost $260. or just $100 to drill the slots if you have the .70 version. Upgrading with ceramic ball bearing cartridge would cost way too much at moment. I’m still exploring the actual benefits of having those ceramic balls and try to get them to work at their peek efficiency. We will be able to build them at an acceptable price with small batches. I will announce the final price after having a mature product.
  6. hypergear
    Its got boost control issues. You won't be able to make more power till you can hold it straight at around 18psi. needs a stronger actuator and hopefully it rules it out. I would go for a 24psi atmospheric pressure rated actuator, whichs should hold 18psi without boost controller. Garrett part: 446131-23
  7. hypergear
    Won't straight fit, But can be profiled to suit your turbine wheel. Its should support 350rwkws on the GT35R but won't be responsive.
  8. hypergear
    Putting it back into the car today. If every thing goes as planed should have it tuned the week after. Also we are in the process of designing a duel ball bearing profile for OP6 high flow. Which has the capacity of 320rwkws with GT3076's response while looks stock standard. I will post photos of it when manufacturing process begins.
  9. hypergear
    With out oil balls would be cooked. I'm hopping to get 300rwkws around 18~20psi, and expecting to see 20psi by 3500RPMs.
  10. hypergear
    Further updates: We've done few modifications to the oil galleries in side the bearing housing hopping for less oil drag on the balls, as well as separate oil feeding setup for the comp side collar. Feels very smooth to spin. Following some advises, I've added anti surge slots onto the comp housing. In theroy it reduces pressure resistance to comp wheel while acts as additional suction ports once boost hit. So the general benefit would be faster response and quicker spool time. Hopefully it works as expected. This time its a ATR43G3 duel ceramic ball bearing unit. I'm hopping for 300rwkws with very fast response.
  11. hypergear
    In Theory it is correct BUT depending on the extend of boost you are trying to hold. Boost dropped caused by lose of turbine pressure. Assume you can holding 20psi with a super strong actuator vs holding same psi with a gate controller the amount of pressure bleed out is identical, means turbine wheel flows the same amount air. Intake / exhaust restrictions can also simulate similar effects. On the same time I must point out this issue you currently have is not turbo related. Your engine pinned badly with 12 degrees + timing regardless the size of turbo installed. I don’t think its right to define your “problem” on the turbine housing while it was also an OP6 Genuine Nissan. Tuners would back timing if cyc temp is high enough to detonate. Also means power lose. Unless that, the heat is not at a level of what you've mentioned. Clearly every one else using the same turbo are making heaps more power with less boost because the average timing run on those was between 15~17 degrees on a safe tune. Btw your turbo was re-sold and installed on GeorgesR34's R34. he will post a dyno reading once tuned.
  12. hypergear
    But on the same time you are running a EBC which will rule out all the little up and downs in the curve. All those boost curves you saw out of my sheets are not using boost controllers. Straight Vacuum into actuator and thats it. Like you just can't stop baitting other people, while some one made it work is trying to advise you. The point of showing you a small 21U .58 can hold boost on a 2.5L is in the same principle as you are trying to hold boost with a .82 3L engine. On the same time the .58 would be cooping lot more back pressure and heat. If I can't get a .82 rear to hold on a 3L there is absolutely no way I can do it on a .58 with 2.5L. Even you've got a GT3076 in .58 21U turbine I can still make it hold 22psi with your 3L engine.
  13. hypergear
    lol well, then carry on and find your own solution. As I've already found mine. Holding 20psi with a stock R33 21U turbine housing: http://www.digi-hardware.com/images/dynosh...rwkwhfboost.jpg
  14. hypergear
    Seriously I can really make that work and hold it at what ever "high" settings you want it to set it. even at 24psi as long as the turbo it self can take it (assume engine's won't have issues).
  15. hypergear
    I give you some advise either way. I've managed to hold 22psi on a RB30det VL, of a customer's car. Needs custom made twin spring actuator with gate controller. If you really want to stick with Garrett Actuators try: 446131-23 . If that doesn't work, send in your turbine housing for modifications. Which I will charge you a million dollars .
  16. hypergear
    To trim or back cut wheels. yes we can do that. you need to give me the specs thou. or a set of 2835 housings.
  17. hypergear
    I can modify yours down to G1 or a SS if you want. doesn't cost much either. How responsive do you perfer? Some thing like a 2530 sort of thing?
  18. hypergear
    Its a sleeve bearing ATR43G3 in .70 comp and .82 turbine. I'll be testing the ceramic ball bearing version of that later in the week.
  19. hypergear
    I was fined for a high mount turbo setup, POD, and BOV, I had internal gate. $760 fine for the EPA. Thats the worst fin I've ever cooped. I was pulled numerous many times since. How ever the internally gated turbo with stock manifold wasn't some thing on the defect list. The current fine for ext gate or de-cat is $4600. You can pass it onto the person who've done it for you if its not your self. I had a customer cooped that, dragged it on and ended up with $5200 fine. He had to strip and sell his joy to pay it off. The EPA in Vic is BS. They need to re-think they fine structure based on people's income.
  20. hypergear
    Its pretty obvious high flowing with factory housings would have many restrains, which we don't have to worry about those in a fresh build. So far we've been building and testing better alternatives for 500HP applications. I'm not really interested but will be doing few tests based on 450~470 HP profiles.
  21. hypergear
    Run a $50 adjustable ebay exhaust cam gear. That will help with response. I'm producing a small batch of 5 Ceramic ball bearing ATR43G3s in .70 and .82 turbine for trail at the same price as our regular ATR43G3s. In case they fail, you will be replaced with a standard sleeve bearing ATR43G3. This will be the Duel ceramic ball bearing version of below: http://www.digi-hardware.com/images/dynosh...g3p2290rwkw.jpg Warranty period is for 12 month. Let me know if any one are interested to trail.
  22. hypergear
    I thought he said 450-500bhp. Is that b standing for back wheels? plus "Even more if possible"
  23. hypergear
    If your goal is around 350~400rwkws you can run a GT3582 in .82 rear with a 60mm external gate. Use E85 as fuel and run a set of adjustable cam gears that should be able to get you the power without too much lag. Plus you need a set of valve springs. Lash setup on the R33 suck, they valve bounce uptop with high boost.
  24. hypergear
    The whole point of doing power upgrade is for the "power". Generally any thing that can boost 20psi around 4000RPMs is pretty drivable for the road. So a turbo that can produce the max amount of power within that response range is most acceptable. On the same time you can get some cam gears or cams to advance response for better driving ability.
  25. hypergear
    Duel ceramic Ball bearing OP6 R34 Neo turbo high flow R33 RB25det fully stock head and forged bottom. 800cc injectors Nistune ECU Z32 AFM 600x300x75mm FMIC 3inch turbo back exhaust 3inch intake pipe with pod. 98 Fuel. Video footage
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