hypergear
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Everything posted by hypergear
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Get a 600x300x100mm front mount first, send us the turbo for another high flow if its not making enough power.
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This will be the final update on the M35 Stagea OEM turbocharger high flows. The Ball bearing RV5 have made a peek of 291awkws @ 22psi on E85 fuel, that is also happy to hold 21psi as minimum base pressure. For any more power that is boost controllable this car needs a much larger exhaust housing or external gate. Dyno shown 27psi mid range and 22psi of where peek power is made. The mid range boost was pumped using an EBC, to increase mid range torque. Blue line is with converter unlocked and red is with convert locked. Far as drive ability concern, it has excellent throttle response working with OEM auto in D model, and pulls hard in WTO. Car has: Emanage Ultimate ECU HyperGear Turbochargers M35RV5 High flowed BB turbocharger 18psi actuator assembly Front mount cooler kit 1000cc injectors 470L/H Walbro pump Shift kit Greedy EBC 3 inches turbo back exhaust 3 inches induction pipe with AFM and Pod filter. Tuned at ETUNER Engine Management Solutions All Mechanical work done by Kaze Motor Service KM/H Scaled Run: RPM Scaled Run:
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Yes it is. But we don't BB 21U high flows. They are already so responsive to a point any better will cause the turbo to surge. -
ATR43's BB cartridges has been out for a while now. Except it didn't make much of a differences working with the older turbine end. Using the new SAT turbine there is a noticeable improvement on drive ability. Turbine side looks like:
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Other thing worth mentioning is the Ball bearing cartridges works extremely well with the new SAT turbine including the current ATR45SAT, G3, SS2 and OP6 high flows. That have made a very noticeable difference to throttle response making the car feels much "lighter" on and off throttle. Highly recommended for street driving machines.
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Needs to be 100 cell 5 inches cat, no cat with exhaust Tee will give you the best result.
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the SS3 is made for external gating. for internally gated and 300rwkws+ bolton, The atr45SAT is a better turbo. Alternatively for 260~300rwkws region, you can use our ATR43SS2 for better response.
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SS2 is more responsive while both of them makes the same top end. Torque wise should be very similar.
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Yes can be done. I have done a evaluation few years ago, the SL2 turbine wheel is made for external gating. It didn't work as well as the SS2 or the OP6 high flow in terms of boost control and peek power.
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It is best sourcing waste gate pressure after throttle body, that gets rid of the variations of cooler kit.
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Water fitting on the ATR4xx turbochargers are in M18x1.5 same as OEM. To get full power from the ATR45SAT internally gated version. It needs to be either in a 4 inches exhaust or a 3 inches pipe with 2.5 inches tee off factory front pipe. Exhaust on and exhaust dropped makes a noticeable difference in power.
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ATR45SAT comes with braided oil feeding line and uses OEM oil drain. Including the manifold spacer this turbocharger is $1350 inc GST internally gated. The water lines you can use Earles kits for around $130 from Pirtek. Or you can use push on hoses and fittings, which comes to around $40.
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Best work as a twin, can use two ATR43SS2s, similar to Chequrered tuning's 650rwkws setup. If it has to go Single ATR46 is fine working with two 45mm gates.
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That is where owning the right car makes a difference. Understanding the relations of how all parts working together when all components are available. One problem with M35 OEM turbo is the size of turbine housing is small for its engine size, that limits the ability to discharge. Working with an highly efficient compressor wheel, there is no boost control. instead boost is "controlled" through the limitation of exhaust, intake and intercooler. We don't have a big turbine housing to high flow, dropping exhaust gas pressure becomes critical, the scenario of actuator over pre-loading or spring enhanced method doesn't apply, waste gate must be open to full extend at desired boost level.
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I've had three turbo changes up to date. In the particular area of boost control: When there are less back pressure in the turbine housing then there are less force applying to open the gate. The larger "GT35" turbine wheel referred to, have caused a drop in exhaust gas pressure, more inlet manifold pressure is required to force the gate open, there for higher boost level. Difference between a spring hooked actuator and an stiff actuator is, the spring's extension load is not linear, It requires a huge amount of energy to pull 10mms then 3mms. While the load of a stiffer actuator is linear and consistent. Fully opened gate gains more power, OEM internal gate assembly is only made to open a limited swing plus the turbine housing is too small, there for added to boost creep. I hope I have explained why my car run no less then 29.5psi when I've made my purchase. Majority of my customers rate M35 those as family wagons, feed them with P98 fuel. I'm making my high flows happy to run mild boost level and correspond to EBC sittings. Auto software is not tune able at moment. its relays on low RPM boost to gain speed, Ball bearing assembly have mad an massive difference in this scenario. There are four more ball bearing configurations to trail on, I need a dyno that shows boost curve, Chihan will be doing E85 tunes after P98 maps. will enclose final results when ready.
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if you are using JJR's piping kit, their pipe diameter is 2.5 inches, so size of the hole is usually cut in 2.75 inches. The PWR cooler is around $1150, size is in 600x300x81mm, you will need to order that through PWR.
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SS2 RV5 shown on photo above is installed. It amazes me of how much of a difference of ball bearings have made on M35, which I could never notice that much on a RB engine. The actuator works pretty well, will be tuned after the new year to share some results.
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Good day, Yes the new actuator opens the waste gate bunk to 90 degrees. Which is included in the $990 option. You will need E85 to get 310rwkws using a R33 high flow on a R34. I'm usually seeing around 245rwkws with the return flow cooler, on E85 it is expected to reach 270rwkws. To use PWR cooler or some thing in a 100mm front mount, you do need to cut under the battery tray.
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With JJR pipe that touches, easiest way is to zip tie the drain pipe to aside of the bracket.
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Its got plenty of clearance using a OEM dump pipe. Or should JJR be making dump pipes following OEM dump pipe angle? But Having said that not all jjr dump pipes touches either. That Xforce dump in my R33 years back was trouble free, and so is Tomei. I will seek alternatives ways to get the IWG assembly shorter.
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They are just JJR's cooler piping with a PWR cooler. I'm using Stock plenum.
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$130 delivered including the bracket. It have made a noticeable difference on my car on the SS1 high flow that just been removed. I would like to see boosting behavior on the dyno before selling. Videos from BoostedR on SS2 Rv4 shown differences between OEM actautor and Stiff Borgwarner actuator: OEM actuator: Borgwarner actuator:
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Have been through few different high flows including OEM turbo on my M35 guinea pig so far. On problem with the M35 high flows is in the OEM wastegate. It is almost as Nissan engineered it to blow open at very low revs. I have installed a 20psi actuator to it using custom actuator bracket and the difference in response between EBC load is very noticeable. New actuator assembly opens at a almost full 90 degrees, It makes a noticeable peek HP to a partially opened wastegate. Getting better transit response, I will be using ball bearing CHRA units, it does not require much oil to run and more then happy working with OEM oil restrictors: Will update results once fully tuned.
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I don't have the machine to do that. There is a workshop not far away that does ceramic coating, I think they charge around $100 a housing. Another result to post. ATR43SS2 externally gated. This is the older version. Usual 3 inches induction and exhaust, FMIC 600x300x75, 1000cc injectors, high mount, 45mm external gate, PFC E85 fue.
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Rb25 Turbo Upgrade, All Dyno Results
hypergear replied to Nacho Vidal's topic in Engines & Forced Induction
Here are two more ATR43SS2 graph sent in, all E85 fuel, R33 Unopened engines. 3inches intake and exhaust, ECU, generic 600x300x75mm cooler, and E85 fuel, Peek power made at 19psi. This is Traditional ATR43SS2: Twicked version, conservative tune, but notice the difference in upper rev torque:
