Blackkers Posted July 7, 2015 Share Posted July 7, 2015 (edited) And by the way, I've made some custom exhaust wheels that is for the GTR OEM high flows. They are engineered to support 300 ~ 350awkws region on pump fuel and response will have similar to stock twins. My car's waiting for bits and pieces, so if any one is interested to evaluate please let me know, I will put a special offer for $1200 on both turbochargers. -9 alternative at half the price of Garrett items Edited July 7, 2015 by Blackkers Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/550/#findComment-7564105 Share on other sites More sharing options...
Anfanee Posted July 8, 2015 Share Posted July 8, 2015 And by the way, I've made some custom exhaust wheels that is for the GTR OEM high flows. They are engineered to support 300 ~ 350awkws region on pump fuel and response will have similar to stock twins. My car's waiting for bits and pieces, so if any one is interested to evaluate please let me know, I will put a special offer for $1200 on both turbochargers. fk me i wish i didnt have brand new -7's... Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/550/#findComment-7564506 Share on other sites More sharing options...
Piggaz Posted July 8, 2015 Share Posted July 8, 2015 Sell, buy these and use profit elsewhere? Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/550/#findComment-7564562 Share on other sites More sharing options...
jet_r31 Posted July 8, 2015 Share Posted July 8, 2015 Hows the R34 development hack going Stao?, You havn't dynoed a SS based version of the ATR 45 SAT on a rb25 for that yet have you, only the normal ATR45 SAT version? cheers darren Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/550/#findComment-7564683 Share on other sites More sharing options...
Cowboy1600 Posted July 8, 2015 Share Posted July 8, 2015 Hows the R34 development hack going Stao?, You havn't dynoed a SS based version of the ATR 45 SAT on a rb25 for that yet have you, only the normal ATR45 SAT version? cheers darren Stao, which version did I end up with? The SS based or normal ATR45 SAT? Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/550/#findComment-7564714 Share on other sites More sharing options...
hypergear Posted July 8, 2015 Author Share Posted July 8, 2015 The SS based SAT made too much torque which my current clutch couldn't hold it. But let me know if you wish to try, expecting to see around 450rwkws mark. 1 Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/550/#findComment-7564739 Share on other sites More sharing options...
hypergear Posted July 9, 2015 Author Share Posted July 9, 2015 took about two weeks to get my order of a PWR intercooler delivered. It came with a pretty good looking box (they asked $11 additional for that box), polished tanks and pretty neat welding: Compare to the Takashi, end tanks looks quite similar, except PWR is hand welded and Takashi is one piece die-cast. However the core interior is quite different. The PWR's cooling fins are neatly 45 degrees angled and dead straight, while the Takashi is all over the places: So hope to see a difference on the dyno on Monday, and will update results when ready. 1 Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/550/#findComment-7565475 Share on other sites More sharing options...
Badgaz Posted July 9, 2015 Share Posted July 9, 2015 This looks like the difference and similar test i did between a genuine blitz return flow and a Chinese copy. Made 7kw difference on mine Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/550/#findComment-7565537 Share on other sites More sharing options...
Super Drager Posted July 10, 2015 Share Posted July 10, 2015 Nice video footage. This is a set of rather unusual high flow jobs. Pair of high flowed 2860-5s into ATR28SS15. Its going to a Rb30det engine with Rb26 head. Hopefully they will solve the back pressure issues currently experiencing with GTRS turbine wheel. One more thing that I'm alittle concern is the back pressure in the exhaust system as the ATR28SS15 is ideally made to run on a single 3 inches turbo back system, that GTR is pretty good of having 4 inches turbo back exhaust, still have to be shared with two turbo how ever. I've made some oversized thrust collars for that purpose, hopefully be seeing close to 500rwkws with those once fully running. Can't wait to see results of this, a guy over on AUS300ZX made 492rwkw on his GT2860-5's so i want to see how much your version can make. Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/550/#findComment-7566061 Share on other sites More sharing options...
hypergear Posted July 13, 2015 Author Share Posted July 13, 2015 This is the lastest results for our evaluations on intercoolers using 173,000KM fully standard Rb25det Neo motor and our ATR43SS2 Rb bolton turbocharger. The result is intriguing, and I have personally never ever thought it would turnout this way. The test car (r34GTT) has:1000cc Bosch injectorsWalbro 470L/H Fuel pumpHypergear ATR43SS-2 internally gated bolton turbochargerAdaptronic Plugin ECUJust Jap's Front mount cooler piping kitJust Jap's Turbo back 3 inches exhaust100 cell cat (don't know the brand)Tuned by Chequered TuningPump 98 fuel Pressure monitored from both inlet and outlet of the intercooler Nothing has been changed on the car apart from the intercooler it self. The result indicates the effects of cooler change, this may or may not apply to other cars apart from mine, it obviously does not mean you should be spending more money on your cars, I'm not promoting or in favor of any manufactures. Result are based on very similar boost levels: Takashi 600x300x68mm cooler: 267rwkws @ 19psi after cooler or 23psi before cooler Takashi 600x300x100mm cooler:278rwkws @ 20psi after cooler or 24psi before cooler PWR 600x300x81mm cooler:303rwkws @ 20psi aftercooler or 22.4psi before cooler295rwkws @ 19psi aftercooler (blue is from Takashi 600x300x100mm cooler) 4 Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/550/#findComment-7567167 Share on other sites More sharing options...
CEF33Y Posted July 13, 2015 Share Posted July 13, 2015 Wow. Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/550/#findComment-7567348 Share on other sites More sharing options...
Dose Pipe Sutututu Posted July 14, 2015 Share Posted July 14, 2015 what Intake Air Temps are you registering? I wonder if it's more so the intake temp that's promoting more power rather than flow, etc. 2 Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/550/#findComment-7567560 Share on other sites More sharing options...
Badgaz Posted July 14, 2015 Share Posted July 14, 2015 (edited) what Intake Air Temps are you registering? I wonder if it's more so the intake temp that's promoting more power rather than flow, etc. That's what it was thinking and asked on fb about temp changes pwr cold to touch. Edited July 14, 2015 by Badgaz Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/550/#findComment-7567613 Share on other sites More sharing options...
hypergear Posted July 14, 2015 Author Share Posted July 14, 2015 Other thing it might be worth mentioning is the PWR's core has no inner fins. They are just straight triangular tubes. Which naturally less resistance. That shown up on the power and torque curve after 5000RPM, engine is definitely getting more air there. Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/550/#findComment-7567733 Share on other sites More sharing options...
Kinks Posted July 15, 2015 Share Posted July 15, 2015 Fascinating stuff, Stao. Love the detail you're going to, it is a puzzle. Would be nice to see intake temps logged as well, although the PWR straight fins / less resistance if anything I would expect to see higher intake temps. Possibly on the NEO, flow matters more than temp. Maybe this is to do with the camshaft and how efficiently the cylinders fill/scavenge. The Neo certainly seems like it loves to breathe, I noticed a "seat of the pants" improvement even from having a straight through muffler but I couldn't tolerate the noise so had a triflow put in.. but I'm guessing the JJR exhaust is some straight-through canon type thing (ugh). Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/550/#findComment-7567899 Share on other sites More sharing options...
BoostdR Posted July 15, 2015 Share Posted July 15, 2015 (edited) PWR uses a design borrowed from the VR4 and EVO's over a decade ago. The little nodules on the inside of the core actually create a larger surface area over traditional intercoolers which cools better whilst increasing flow capacity. The Delta fin(Apexi Style) of the Takashi reduces flow over a comparable 68mm core which also lets it down. Best cooler to date I have tested is the ARC R Twin entry, flared bell mouth style inlets, flow through knife edged tubes(outside air for radiator). If only you could use the EVO/PWR style core with the ARC core (inlet air) bell mouths you would have it all so to speak. Pity they are almost impossible to find these days. Matt Edited July 15, 2015 by BoostdR Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/550/#findComment-7568049 Share on other sites More sharing options...
muzziak Posted July 15, 2015 Share Posted July 15, 2015 PWR uses a design borrowed from the VR4 and EVO's over a decade ago. The little nodules on the inside of the core actually create a larger surface area over traditional intercoolers which cools better whilst increasing flow capacity. The Delta fin(Apexi Style) of the Takashi reduces flow over a comparable 68mm core which also lets it down. Best cooler to date I have tested is the ARC R Twin entry, flared bell mouth style inlets, flow through knife edged tubes(outside air for radiator). If only you could use the EVO/PWR style core with the ARC core (inlet air) bell mouths you would have it all so to speak. Pity they are almost impossible to find these days. Matt Do you reckon replacing a Takashi 68mm core with like a JustJap 78mm will cause any differences and be worth it ? Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/550/#findComment-7568106 Share on other sites More sharing options...
hypergear Posted July 15, 2015 Author Share Posted July 15, 2015 Here are data from few weeks back. Takashi 600x300x100mm / 600x300x68 cooler vs JJR 600x300x76mm cooler. Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/550/#findComment-7568160 Share on other sites More sharing options...
BoostdR Posted July 15, 2015 Share Posted July 15, 2015 Tao's testing points to yes a JJR cooler is better but a 100mm Takashi would be better still. Matt Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/550/#findComment-7568165 Share on other sites More sharing options...
hypergear Posted July 15, 2015 Author Share Posted July 15, 2015 Laggier tho Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/550/#findComment-7568177 Share on other sites More sharing options...
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