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hypergear

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  1. hypergear
    93 R33 GTST Rb25det with forged pistons (factory compression) and stock every thing else. 550cc injectors Z32 AFM HyperGear ATR43SS-1PU turbocharger 3inch turbo back exhaust Ebay cooler Nistune chipped ecu Here's update with the SS1 PU prototype. 291rwkws@21psi (run was not complete as cooler pipe slipped) when the cooler is cold and average of 270rwkws@21psi when the cooler is hot, 260rwkws@14psi. Runs were done on 14psi (red) and 24psi (yellow/Blue) high pressure actuators. No boost controller was used on those runs. This turbo was not equipped with a gate controller. 9 sec ramp:
  2. hypergear
    ^^ They are in page 73 cheers
  3. hypergear
    I think Trent got mixed up with the models, I believe he was referring to the G1 or the original SS1PU with small housing. Also you need to refer to the yellow boost line, the red one opened too earliy without boost controller. This one's making 20psi by 3350 which is about the same to the SS1's response on my original read out. Its drives like SS1 that makes more power and torque. This one didn't have wastegate controller in the design, I sort wanted it to bleed down as it loses heat that way.
  4. hypergear
    Different dyno read differently.
  5. hypergear
    Yes that was correct, and it was very quite on the head phone (detonation detector). The engine and turbo were very happy today.
  6. hypergear
    Here's update with the SS1 PU prototype. My car's came with an ebay cooler which was getting cooked on the dyno. It maxed 291rwkws (was not complete as cooler pipe slipped) when the cooler is cold and average of 270rwkws when the cooler is hot. I had 2x actuators today, one is 14psi and the other was high pressure that peaked 25psi. No boost controller was used on those runs. This turbo was not equipped with a gate controller. 9 sec ramp: Its pretty happy on the dyno, made power pretty easily, and very good to drive on road. It makes 220rwkws @ 4000RPMs with the best run and 210rwkws @ 4000 on the average run. Compare to the previous run it have lost 450RPMs making 20psi by 3350RPMs. But picked up lot more mid range and top end, which is pretty worth it. I'm pretty happy with how it overally performed. I will probably going to give it another run with a better cooler.
  7. hypergear
    I can make them that way if any one wants one, but not really interested in building and selling them as a product as the SS-1 has out performed above in pretty much all accounts. Here are some results form the ATR43G1 unit. The peak was 232.9rwkws at 18psi. Turbo makes 20psi by 3000RPM. It has dropped to about 14psi up top, that’s because the comp wheel isn’t big enough to keep up with the flow up. That is the behavior of this turbo. On the road it is super fast and responsive. This turbo is good for some one who's looking for 200~230rwkws running on stock injectors and AFM. This turbo should also be excellent on Rb20dets.
  8. hypergear
    Made a bigger housing for it this weekend. The test car's currently got a G1 on it, need to test that first. will swap it over when I have a chance.
  9. hypergear
    Any one's got a dyno sheet of a evo including torque curve? If there's a turbo that has similar or better downlow torque then a evo then there might be a chance of beating it. Any way, ATR43G1 is in the test car now. Super responsive. Should give it a new name: DDT. Standing for Dose dynamic turbochargers (that came from Trent ). instant boost, makes lots of sucking, splatering and dosing sound, kept the BOV very busy. expecting 230rwkws with stock or better response. will post result soon.
  10. hypergear
    Its actually drawn very accurately measured by dots in percentage of the actual reading from graphs earlier, you can work it backwards to get the actual reading from the dynosheet. This prototype is losing torque for better response and drivability, that still needs more work done at this stage, the final version should handle around 280rwkws mark. SS1 should be good for about 250rwkws comfortably on the R34 with supporting mods.
  11. hypergear
    I've done a Radar graph (or what ever its called) to show the trade offs between power, torque, response and drivability. I believe this is more meaningful. Overlaid results are from: Standard turbo (some parts are estimated ie. Boost VS RPM on 20psi) ATR43G3 None FNT (I had a blocked cat on that run so it’s bit under powered) ATR43SS-1 ATR43SS-1 prototype. ATR43SS-2 Which demonstrates areas had to be sacrificed to gain in other areas. The goal would be minimum sacrifice for maximum gain. We can see some combinations are more extreme in certain areas then others. So depending on the most importance to driver’s preferences. Its also interesting to see the SS-2 is more of a perfectly balanced turbo in every way. Note. Testing platform, Dyno brand, software and ramp speed must be identical or it won't make any sense. Any one knows how to do this in excel?
  12. hypergear
    er.. Actually your run was done on a 12 sec ramp making a fair comparison with that stock turbo's reading on the same ramp timing. Mine is based on 9sec ramp. Compare to my original SS1 reading on the same ramp timing the prototype is about 500RPMs more advanced in response as well as torque，making it more responsive then a factory turbo. Come pass and test drive it when you free, totally unique driving experience. Also it’s interesting that no one have ever ordered an ATR43G1. That is a 2530 equivalent turbo designed to max with stock injectors and AFM. Since its going to take about a week on bits and pieces for the prototype, I'll be building one for my self for a power run, should do 230rwkws with stockish response.
  13. hypergear
    Both SS2 and G3 are tested on the same platform and the SS2 performed better and it is truly more responsive to drive on road. The original design goal is some thing has excellent driving ability while still have the max power out put as the G3. It’s also the fist turbo with FNT integration. That worked really well. Apart from focusing on its response and peak power, notice its torque, of how its wide and spread, that is the most important factor in creating excellent driving ability. It did cost more that is due to 4 extra machine hours. I believe The ATR43SS-2 is the ultimate choice for responsive 400rwhp with the best driving ability. On the other hand Alfa versions took over a year and thousands of dollars to get all facts right, It is a mascot of advanced engineering. How ever I never indented to sale it. Reason been is it failed to prove much differences in response to traditional bush bearing. The opposing energy slowing down shaft speed is surge pressure. Effect from rolling object is minimum. Plus the cost and time involved making it for us is impossible to market. I believe the rear housing is too small or the comp wheel is too big, its showing its too hot. How ever the response and how it takes off is amazing, I would like to keep the current turbine setup and trim down the comp wheel size to make it work. I'm also in the process of building a slightly larger turbine housing to suit its current CHRA. That should work out pretty well too.
  14. hypergear
    yes they starts with .84 rear. Also I'm really happy with the how the current prototype behaved down low, I will draw a small comp wheel profile to be cut suiting that turbine setup, which should still get me the same sort of response and down low torque with more mid range for 250rwkws.
  15. hypergear
    Thats in page 57. That was with a .63 OP6 rear. Its going to be super laggy with .82 rear, and its about the limit for that comp wheel too. Might want to try those billet wheels I've made for the G3 Alfa version which made 335rwkws on 21psi, which I don't think stock manifold can flow much more either.
  16. hypergear
    Yea. That was a special high flow that we've did to test out the max amount that I can flow out of a .63 rear housing and it made 345rwkws on 28psi still claming, it didn't get hot or any thing. We ended up with 321rwkws out of that on 20psi. That custom high flow is a bigger turbo then the SS-2.
  17. hypergear
    93 R33 GTST Rb25det with forged pistons (factory compression) and stock every thing else. 550cc injectors Z32 AFM HyperGear ATR43SSxx Work in progress Prototype turbocharger 3inch turbo back exhaust Ebay cooler Nistune chipped ecu 264.2rwkws at 22psi. Full boost by 2900rpms. Super responsive. Below is based on 9 second dyno ramp.
  18. hypergear
    Every single standard high flowed units has a G2 CHRA in it. Every one whom tuned it have managed to make powere even using 21U turbine housing stock injectors and AFM. There are more then enough results from various tuners and cars from various states to prove they've made "at least 200rwkws". Just because he's the only person whom can't tune the power out of it, does not mean every one whom owns this turbo and made the power is BS. But having said that thats assume every thing on your car is 100% normal. I still got that 345rwkws high flowed turbo sitting on the shelf if you want to swap and give it a shot, I'm just going to have a laugh if he still can't make any thing above 200rwkws with that.
  19. hypergear
    Yes Got some interesting result today. It archeived some of the design goals but all of them. It did make 20psi by 2900RPMs and maxing out 264rwkws on a 9 sec Ramp which is super responsive. (Note: Thats not a high comp engine running cam gears.) The torque also came in very early and held ok through out the rev rang, which made the car felt very and good at taking off. So I'm still 16KWs short from my goal of 280rwkws and its lost some mid range from 4000 to 5000RPMs compare to the SS-1 which is likely from heat. I think the rear housing is abit small for the new CHRA, I will be up sizing the turbine housing hopping to gain some more mid and top range. So more evaluation and testing to come. Dyno run is based on 9 Sec ramp
  20. hypergear
    I've made 267rwkws out of that turbo pulled it out, mailed it to you then that guy's struggling to make any thing over 200rwkws, and he turned skeptical about the turbo, and any one else whom made more using the same turbo. lol
  21. hypergear
    Adam the dynosheet from your car is based on a high comp + cam gear, it still produced better response to any one else whom used it when my old (retaired) TR43 was on it. So I believe by using the ATR43G3 from my dynorun on your high comp setup will result same or better. How ever no one with a standard RB25det using factory cam gear internally gated can archive it. If I can get the prototype making 280rwkws while boosting 24psi by 3300rpms on a det then that turbo will be making 24psi on at 2800rpms or earlier on a NA + cam gears. So why don’t we all "upgrade" to NA+T motors. The down side is high comp engines pins with equivalent timing and boost to turbo engines. Likely result variances in top end power, torque, consistency as well as reliability. There will always be gains from areas that other one loses.
  22. hypergear
    Its a good result , high comp engine with adjustable cam gears would make a turbo spool earlier. Plus different dynos with different sittings would read differently. Compare to one of my earlier runs using the same dyno: RB25DE high comp, adj cam gear, 3076 .63 ext gate, with a bleed valve Standard RB25DET motor, stock head, ATR43G3 int gate, with Bleed valve. My run ended early due to misfire while still making 294rwkws. They looks similar in terms of Power VS Response VS KM/H. But I know the SS-1 PU is more responsive.
  23. hypergear
    See turbochargers engineered in this project are solely for RB25det engines, Garrett would make a turbo to suit a variety of engines. There are room for improvement when designs becomes specialized. At moment it feels like some where around the 280rwkws mark with very steady torque. Its drives very differently to any other turbos I've engineered or experienced so far. I'm expecting an out standing result.
  24. hypergear
    Tried that， Doesn't work . the lower elbow towards the turbo side would suck shut.
  25. hypergear
    I'm not sure what the dyno says yet. Feels like a 3540 comes in full boost at 3000rpms. Its got a crazy pull when you give to it. Compare to SS1 it feels like it has pickedup heaps more torque through out rev range with similar sort of response. But once again the tune in it now is for a much larger turbo so not sure what it feels like once its fully tuned. Will post up results. Add: Went for a 50kms drive, and its got even more responsive (probably got all the thick stabilizing oil washed away). Heaps of torque and zappy response. The best way describing it taking off would be: like a billet leaving the gun barrel. The car just launches, there is not a bit of flat spot down low or any where in the rev range. As turbo builder I'm very happy with the way how it delivered power and torque. The drivability and performance worth every hour spent designing and making it.
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