hypergear
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Everything posted by hypergear
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Nisma youtubed a 9.9sec run in a R33 Chassis, Rb25det 900rwhp (671rwkws) was in their description. There were no additional details for their build.
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The highest out put RB25det motor I've seen is 900HP from Nisma performance center. I'm currently doing 490rwkws I don't think the rest of the hardware can take it any further. A list of your mods would be helpful.
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True, how ever it is still playing the power / response trading game. As the down low area of the power curve is now shifted to mid top. SS2 Alpha is a very responsive turbocharger, if a standard SS2 is used then I won't be expecting 20psi till 4100rpms. Tren't computer is some times unstable as it crashes. It crashed after we printed my last SS2 alpha run and lost the dyno plot, So we can only compare paper back at this stage. High flow R34 turbocharger would bolt in straight. It will still need a tinny bit of a twick on the water lines, but not as much as whats on the SS1PU. -
It had more boost in those areas on today's run.
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Did some evaluation and testing today based on the differences those Tomei 264 / 9mm cams. In which Tomei should have done before considering selling those to the market. The difference is. Well, 3Kws in power and 350RPMS in lag. By saying lag means Laggier with Tomei. The Test turbo was a SS2 Alpha with VNT turbine. My original result was: Same turbo, Tomei 264 / 9 Cams: \ ^^^ Notice the difference in response from stock cams. In conclusion the lose in response is 350rpms, which is greater then the gain using VNT turbine system, resulted in a laggier then usual 386rwkws. and I'm unsure of what those cams are good for, been secretly promoting them to few selected retailers, perhaps tomei haven't figured it out them selves. A T04Z or a School bus turbo perhaps. Those cams will be shortly removed and auctioned off on ebay. I'm rather disappointed.
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Well I can swap you with a current high flowed R33 turbocharger and physically set the wastegate to hold 20psi without any boost drops. If that don't make power you might want to have a look into the supporting mods you've got. Since you are in Brisbane, I recommend going to see DVSJEZ. PM through if interested of doing so.
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We use Hiens dynamic balancing systems. never had issues with any turbochargers that we've balanced. Get the balancing right is only a small section of the map. There is shaft tolerances, clearances, machining tolerances of the housings, bearing housings, bearing housing bore, fluid dynamics in side the bearing housing, wheel materials, wheels sizes, blade profiles, waste gate assembly and more. Now high flowing factory turbocharger to suit a specific engine requires lots of knowledge and experiences working with that engine, to understand how the customized profile behaves in terms of generating power, boost and efficiency range with limitation of stock housings, in which we've spent lot of time on. Having a reliable balancing machine can only result a well balanced shaft assembly. Once all criteria mentioned above meets, you have a good turbocharger. So the best way of making better choices is by comparing results.
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Yes that's what the tuner sent in so I assume all the data are correct. The G2.5 is a bigger turbocharger using a .82 rear housing, by high flowing a .63 OP6 turbined turbocharger I believe it will be straggling to pass 230rwkws on your car. And not sure if this has been posted. It is a standard R33 21U high flow with current profile doing 271rwkws on pump 98 fuel. It does have a set of drop in pon cams.: Note the actuator used is factory.
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Some results sent through DMD tuning this evening: From a high flowed Rb25det Neo turbocharger, supporting mods, pump 98 fuel
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It is hard to determine, just like Garrett results on the dyno page are mixed. This particularly happens to turbos internal gate, factory manifold with simply bolt on setups. Turbo wise they all identical and pre-trailed. Yet results are mixed. Since I have a Skyline my self, I do spend time in finding issues that could cause specific problems, do best to rectify through altering the physical shape and housings of the turbochargers, and keep customers informed. Apart from the car it self and tune, some times the fuel it self also rise concerns. Some one in WA region mentioned a 70kws gain on E85 over pump 98, not only applying to one of ours but also a friends whom's using a 3076, final results between the two are minimum. That power difference in fuel some thing we could never get in Vic. Is it because the E85 fuel is extremely good in their region or is it the pump 98 fuel substandard. Generally, by keep the induction and exhaust free flow as possible, good cooler, good fuel, correct engine timing, and a tuner is knowledgeable. The results usually be parable with controlled.
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If your cooler piping didn't pop then likely your turbocharger has lost its rear wheel.
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Got some feedbacks from the ATR43SS4 built as a Ford XR6 BA internally gated bolton turbocharger. Its doing 408rwkws on 18psi P98. I think the turbine end is maxing out, it really needs a large external gate for more power.
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Vsr balancing is important and we do it to every single turbocharger that we service.
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The harmonics on the CHRA assembly of a turbocharger would be only out balanced at certain shaft speed and then balances it self out in neutral, just like as if your front wheel is out of balance and that vibration goes away before and after certain speed. So regardless of whom ever has what ever balancing equipment, as long as its accurate you can only balance it to a certain point. That does not determine who's high flow job performs better, last longer or provides the best $=HP value. Any way. Some information for the OP to compare with. Our high flow out of 21U R33 turbocharger makes 320rwkws on E85 internally gated on a bolton setup with 22psi reached by 3500RPMs. and been in 5th in World Time Attack Sprint class 2013. This service is for $850 including braided oil line.
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Depending on whats struggling. At that boost level it could be the compressor or the turbine, I think its more of the compressor end. I've pmed you with some recommendations if you would like to trail them out. I'll be happy modifying them free to reach your performance target.
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This is a new turbine side design for a Rb25det it is different to whats in the standard high flows, I really want it to make more power with better response as if possible. hy_rpm: I did make a 11 blade 60mm compressor wheel for the SR20det motors as well as a 64mm and a 68mm wheel. I believe the maximum that a SS1PU turbine can perform on a SR20det would be towards 250rwkws with cams on pump 98, so those are really targeting at the responsive end. ZRBE: As for the RB20det my recommendation would be the 64mm billet SS1 turbocharger. it has similar response to a 2530 with abit more power.
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Yea true. Some updates on the new SS1PU turbocharger prototype that is due for trailing very soon. So basically I still want the current SS1PU's response but with a lot more power. Well here it is:
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Check out the latest results from our current 21U std R33 high flowed turbocharger on the last few pages. They are capable of doing factory alike response of 260rwkws+ on P98 and have done 320rwkws with E85. Cost only $850 now with oil line, and that has been welly track proven. http://www.skylinesaustralia.com/forums/topic/261613-hypergear-hiflow-service-continued/
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Well, most of Skyline turbos that came in has no exhaust wheels. The way of how stock turbine shafts are made is by attaching a small section of the ceramic exhaust wheel into a steel shaft. Both elements has different expansion and retraction rates, and its always the section of attachment which breaks off at the ceramic end. The age and history of them probably don't help either, I won't be wasting money and time trailing 2nd hand turbos if its my car.
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If the vacuum hose goes straight to actuator assuming the actuator is working then it shouldn't be boosting more then what it should. Its a simple analog pressure valve. Those turbos re almost 20 years old with unknown conditions, not much of a point of buying them 2nd hand. Since you went through few its probably worth high flowing one of your dead turbos, you can then run what ever boost your engine and mods are happy with, for much better performance.
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Hi every one I'm back to business. The Kia project in China is completed but disappointed in the way of how it has been organized, some of you might already seen my update on Facebook. Updating with some video footages from xxxRicho's R33 running the latest R33 turbo high flow with 294rwkws (E85) at Motul ADVAN World Time Attack 2013 Club Sprint ending in 5th
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Rb25 Turbo Upgrade, All Dyno Results
hypergear replied to Nacho Vidal's topic in Engines & Forced Induction
1996 R33 skyline S2 stock engine, factory manifold internally gated on E85 FMIC 650cc injectors PFC HyperGear ATR43SS2 internal gate Rb25det bolton version Peek power of 293rwkws @ 17.5psi Pump 100 Fuel. Similar setup with a R33 21U high flowed turbocharger: 258.6rwkws @ 16psi. Pump 98 fuel 21U Standard high flow profile. Supporting mods and Tomei Pon cams. 271rwkws on 18psi, stock actuator, pump 98 fuel. -
Pretty interested to see where the SS2/3 alpha turbos stands. You can get data from our site: They are on stock cams. http://www.hypergearturbos.com/atr43alpha.html
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That was a while ago, before I started turbos. They were reasonable quality bikes. I don't remember selling any for $160 brand new. I've seen this before. You might want to check with whom ever assembled it. thread on the peddles are inversed, If its cross threaded and fell off then its been screwed into the wrong side. I got some free spare parts collecting dust if you want to fix it.
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Using R34 OP6 rear housing for high flowing can probably archeive towards 280rwkws . How ever not sure what the lag would be like.
