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hypergear

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Everything posted by hypergear

  1. hypergear
    Manifold studs are M10, and from memory the end that goes into the manifold is M12x1.5 and the end that connects to the turbocharger is M12x1.25. With the dump pipe studs, if using a ATR43xx bolton turbocharger, the one above the internal gate flapper has to bekept short. or it might be fouling against the gate. Preferably just a 20mm bolt
  2. hypergear
    By looking at the curve its not making much power for the setup or been responsive in todays standard. Housings are tinny for this engine is, which makes compressor flow strongly relaying on the external gate. That would be making the turbine side red hot, probably starts to pin after a couple of dyno runs and it had to be pulled off the dyno. It needs a much larger housings with more civilized wheel combinations.
  3. hypergear
    Want to swap your car with mine? Drive off with 490rwkws not cent needs to be send on. Few years a ago I remembered a customer had similar issue and it turned out to be two teeth out on the cam belt. I've also seen some interesting and strange results with those cheap NZ manifolds. It might be some thing to look at by trailing using factory exhaust manifold.
  4. hypergear
    Well. There has been many G3 and SS series been built through the year, the spec of the turbocharger varies, the internal gate assembly is matched to suit the application its designed for. Which not necessarily made for 14psi that can be rised using a EBC to reach 24psi. Relating to the latest incident, it turned out the dump pipe bolts used are too long that fouled against the internal wastegate flapper. So its no longer spiking at uncontrollable boost level. Regardless, if a turbocharger is made for a internally gated 280~300rwkws application then it is obvious that it will be running in between 18~20psi of boost. If this turbocharger comes with a 20psi assembly then lowering boost level by change in actuator will not result in significant differences in the minimum boost level archived. I can not use a 14psi internal gate assembly to hold 20psi nor using a 20psi internal gate assembly to run 14psi. In which the assembly it self has been setup for this purpose. To clear the intention of purpose I do ask a lot of questions before proceeding in building any turbochargers. Below is a demonstration of two different internal wastegate assemblies: Purple is made for 14psi, made to run 20psi. Blue is made for 20psi, did every thing possible to run at minimum boost level. Orange is made for 20psi, run at 20psi.
  5. hypergear
    No panel filter + Bunch of 1.5 inches holes on the Air box lid.
  6. hypergear
    Its been sent out few days ago. should be with you very shortly if not yet arrived.
  7. hypergear
    hahahahaha. No man. KIA's taking 15 degrees happily. Well RB25det pistons are lower in compression to Neo pistons any way. Should have helped in knocking prevention. hopefully the engine is all good.
  8. hypergear
    ok. hope every thing gets sorted shortly.
  9. hypergear
    Did that actually make 400rwkws on stock manifold?
  10. hypergear
    Guided at 4000 / 4500 / 5000RPMs. Per description on the boost curve sheet: 19psi @ 4079RPMs, 25psi @ 4218. There was a split silicon hose that was unnoticed, affecting boost response. This turbocharger is going back to dyno again in two weeks time using my modified stock exhaust manifold expecting to hit full boost by 4000RPMs. It drives reasonably well on road, has a 3582's top end without the lag.
  11. hypergear
    I can upgrade it to the current SS2 for $250 if you prefer, and ask M35scotty to do the external gated rear housing mod. How ever I have picked up a lot more power from externally gating through factory exhaust manifold, it is preferred if you can do the same. See if Scotty can do that for you.
  12. hypergear
    ATR43SS4CBB Alpha turbocharger 93 model R33 GTST Forgied CP pistons, valve springs Stock Cams 1200cc injectors 600x300x75mm Front mounted cool Brae high mount exhaust manifold HPVA 50mm external gate plumbed back. Xforce 3inch Cat back exhaust 100 Cell Cat Profect B electric boost controller 4inch intake pipe Adaptronic Plugin Power 435rwkws @ 25psi , E85 Fuel
  13. hypergear
    Yes, we did get the Adaptronic tuned running. The internally gated VNT turbocharger didn't work according to plan, but I did get plenty of data for further research work. Regardless, VNT internally gated system is proven working, and have made a difference in turbocharger's response: If I have time finishing off the newer prototype, it will be trailed again on the 29th.
  14. hypergear
    Well any thing bigger will need to work with a even larger compressor wheel which will be looking at the SS3 and SS4 series in .82 rear. How ever those wheels are too large for the factory compressor housing so as far as high flow concern the 376rwkws E85 result is about the limit for now. And here is a quick peak of a brand new ATR28SS1.5 Alpha prototype, which took me a weeks of spare time to complete. Note this is the internally gated version. It is currently a bolton turbocharger for SR20det motors. After a little bit of driving around it is definitely more responsive then the SS1, even the CHRA configuration is larger. There are alot of reasons on paper that it will not work properly, and I will end up with very little power plus either a massive boost creep or a massive boost tapper. And also many reasons it should work as pressure drop by any exist will result a pressure drop off all exist. This is like the argument that we've had earlier with few members on where the external gate should be fit thread, of pressure V flow. If it does work then by using this method we should be able to knock some lag out of GTR motors that runs on large twins. Dyno tune tomorrow morning. Hopefully the working theory proves its ground.
  15. hypergear
    I will need the factory actautor, which I can set it up in a way to hold 20psi. But if you don't have one then we can supply an high pressure actuator for $100 additional with fitting bracket.
  16. hypergear
    All the hoses from My self are restrictor free they are good to use.
  17. hypergear
    Mine is for sale, R33 GTST, and it has made a useless 490rwkws (wheel spin in every gear with 275 Micky Thompson ETs), not sure if that is "big powered" enough If you've already got R34 then get: ID 1000 injectors Adaptronic ecu Stock manifold with external gate mod or Brae High mount with external gate. Our high flowed factory turbocharger E85 That should reach towards 350rwkws.
  18. hypergear
    This is Important: I've just had a customer brought a set of Kando's oil feeding line kit in dummying up with his newly high flowed R33 turbocharger. I've noticed the benjo bolt supplied with the oil feeding line has a 1mm oil restrictor in it. That must be drilled out to at least 3mms. I definitely recommending of buying our own oil feeding line to work with our turbochargers. How ever if you've got the Kando / Ebay oil line kit, Please make sure all fittings and the hose has a inner diameter of at least 3mms before using them on any of our journal bearing turbochargers.
  19. hypergear
    Not really. quite opposite actually. They start with one turbocharger and the other turbocharger weaks up later. I want mine to start up as a twin with only the smaller turbocharger generates boost, when the larger turbocharger in pre-spool (or lag) state. Probably an ATR43SS1 with a ATR43SS5. So in this setup once certain boost level reaches, take 20psi for instance, which on paper appears to be @ 2800RPMs for the SS1, It will carry the engine out to 4500RPMs in which the larger turbocharger also makes 20psi. At that point the smaller turbocharger goes to sleep. and the bigger turbocharger carries on. There will be a couple of switches involved, how ever If every thing works out right, I shouldn't have any dips in power curve and it will behave like a tinny turbocharger makes 490rwkws.
  20. hypergear
    Yes it does. Stock manifold has better down low response and torque using the same turbocharger. Reference: http://www.skylinesaustralia.com/forums/topic/261613-hypergear-hiflow-service-continued/page-298
  21. hypergear
    I don't see shifting shaft speed or what ever happens between the two turbos would be a problem. The only reason I would considering compound system is gain response while make heaps of power which means reaching the maximum flow capacity of turbo B. By enlarging turbine end of turbo A so to suit turbo B's flow I will lose response. I'm not going to argue the effects of compound system on Petrol engines to a dead end as I've not trailed it my self, but point out areas that could be considered problematic. On the same manner, the sequential twins are much more manageable, and theory in practice suits petrol engines better. Which It will be the last project to be trailed on my Skyline.
  22. hypergear
    Just my opinion that Compound didn't work on paper. Mainly because of the exhaust side as small turbo's rear need to satisfy the flow of larger turbo's compressor. I can think A way for this to work, that is making the smaller turbo's rear to have identical flow as the big turbocharger. For example if the larger turbo is a 3582 then the smaller turbo has to be a 3571 sort of thing. But if we use above method to cool down the exhaust end, then the compressor end will have issues as the smaller 71mm compressor wheel can not flow as much as the 82mm compressor feeds, its probably going to cause Turbo B to surge. For 3082's power and stock turbo's response, A sequential system will do. So before 14psi engine pumps gas into a small 2860 lets say, and after 14psi, the 2860 goes to sleep and 3582 wakes up. The 3582 during the time before 14psi needs to be always in a "half sleep" state or its going to create a dip in power curve if its coming from stand still. Just needs to put abit of smart thinking into manifold, dump and discharge pipe. I think this will work in a much better manner.
  23. hypergear
    I looked at compound system few years ago. The original compound Diesel system for a truck which is by turbocharging a smaller turbo with a large turbo, Not sure if it would work on a high performance petrol system. There are two things doesn't look right for petrol. 1. Exhaust side Exhaust manifold mounts to the exhaust housing of the smaller turbocharger. The outlet of the smaller turbocharger's turbine housing goes to the inlet of the large turbocharger. 2. Induction side Outlet of the large turbocharger force feed smaller turbocharger's inlet, out let of the smaller turbocharger goes to the intercooler. Put them together we have: Big compressor of turbocharger two, with small turbine end of turbocharger one. Unless there is a way which turbocharger one can increase its flow capacity to suit turbocharger two's compressor when needed. I think its going to make the engine pin. Also if photo above is based on a RB25det using a Compound turbo system, then I think the SS2 Alpha have made better power band. Other alternative for huge power with stock response is by using a welly tuned sequential twin system. I do have drawings to make that work and is probably the next thing on the trail list. Its going to get very expansive how ever, and I'm not sure how things might be fitted under the bonnet.
  24. hypergear
    Looking back to my result, actually this external gate setup managed to match my Brae high mount manifold's result in exception of slightly lower in upper range torque. G3's result which share the same compressor as the OP6 high flow. http://www.skylinesaustralia.com/forums/topic/261613-hypergear-hiflow-service-continued/page-355 So this setup is enough to max out your 2535's compressor flow. Scotty is coming over this weekend and we will be looking to get all the plumbings properly made and jigged, before offered as a cheap and effective service.
  25. hypergear
    Stock induction pipe will suck shut. You can make a hard induction pipe out of couple of silicon joiners like: http://www.skylinesaustralia.com/forums/topic/261613-hypergear-hiflow-service-continued/page-89 or you can pm M35scotty for his induction pipe which allow factory bov and breather plumbings. http://www.skylinesaustralia.com/forums/topic/261613-hypergear-hiflow-service-continued/page-288
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