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Tech Talk Technical Discussion About The Nissan 240SX and Nissan Z Cars |
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#841 | |
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#842 |
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No, iirc your exhaust turbine wheel is smaller than gt28's. the smaller wheel isn't efficient enough to run the larger compressor wheel. something like that...
http://zilvia.net/f/showthread.php?t...ght=pure+turbo |
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#843 |
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Well, I'm hoping to get some dyno time scheduled in the next few weeks.
Current setup: Stock internal red top with new OEM gasket and ARP head studs Cody Ace turbo manifold ceramic coated with tial mv-s GTX2867R of course PBM HMIC Synchronic DV recirc'd Base street tuning yesterday at just under 23psi I still need to dial in the gain and set gain on the Profec 2, but it looked to be hitting 23psi right at 4000rpms. Judging by when the waste gate started to vent, I'm thinking I can reduce that by 200-300 rpms. Once I know this set up is solid I will swap in the S3's. Car doesn't feel all that fast until you watch the speedo move. The transition to boost feels similar to rolling into the power in my old G8 GT, but much harder. Very smooth power band. |
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#844 | |
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#846 |
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My turbo arrived on monday from PureTurbo. Billet wheel and machining looks great. PT compressor wheel measures same ex/in as Garrett GTX67. happy w/ my purchase so far....hope it doesn't explode!
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#849 | |
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Interested to see how this fits up...please post installation pics! Is that the T25 "plus" T31 housing? |
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#853 |
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Alright, so I've finally got my car driving and running again...still having some weird issues, see here for details (http://zilvia.net/f/showthread.php?t=568844)
But Im on S3 cams, JWT tune, and GTX2867R with .64 AR. It seems like I am not getting to 20psi until like 4300RPM or after...does that make sense? That seems more laggy than I was expecting. And its very peaky feeling, like no power at all until it snaps up to full boost...feels like a 2 stroke... Any ideas?
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#854 | |
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The next contestant to prove the ability of the gtx2867r is? Sent from my Highly Tune Galaxy S3.4!!!
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#856 |
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If undesirable results are proof, then yes! But we're looking for that underdog that doesn't have to run 25-30psi to break 400whp😀
Sent from my Highly Tune Galaxy S3.4!!!
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#857 |
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#858 |
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Yeah I remember that post and graph, that's is one of the better looking ones too!
Did you ever run that 1.9bar boost? Ever ask yourself, why so much boost? just curious...
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#859 |
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Hey guys! Just looking for opinions here if my results seem right to you guys.
Specs; GTX2867R 3" Intake, Z32 MAF Stock Mani w/ EWG 38mm, Cobb tuning IWG delete 740cc Inj. Tomei Poncams 256/256 OEM Re-Ringed Piston Rings, Honed properly, clearances good (Piston to wall, piston ring gap, etc) RS Enthalpy dyno tuned by Martin RS Enthalpy Z32 Coilpacks, and modified ignitor/er Apexi 1 piece 3" Exhaust Cosworth HG, ARP Studs Stock Intake Manifold 3" Intake piping, 2.75" Hotpipe 92 Octane Results; 362whp/358 ft. lbs tq @ 20PSI AFR 11.5-11.7 Dyno Sheet; ![]() Dyno Video; Tried removing exhaust to see if restriction was there, but same results, same goes with removing the suction filter. Wanting to break 400whp, think 264/264 BC Cams & Ti Springs (of course), + Freddy Intake Mani will get me there? |
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#861 | |
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If you do turn the boost up you can hit 400hp but that will be at the end of the power band and the torque would have probably dropped off significantly. Most gtx2867r users don't mind that. Because they make a butt load of torque before 5krpm ![]() Sent from my Highly Tune Galaxy S3.4!!!
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#862 | |
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98 240sx w/ S15 SR20DET, T2 20g, 11.22 @ 124.98 |
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#864 | |
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But you lose low end. |
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#865 |
New Garrett GTX2867r
Are you running the t28rs style compressor housing or are you running the stock t28 style compressor housing? I'd say the intake is holding you back... How thick is your head gasket ever know what your compression is?
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#866 | |
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.64 A/R P# 430609-0230* Cosworth 1.1mm thick, 87mm dia. Head Gasket. 150-155 all four cylinders. Yeah I think I'll gain a little more by putting a freddy Intake mani on there. Still waiting for isis to release their new designed Intake mani for SR though. Sent from my SAMSUNG-SM-G900A using Tapatalk |
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#867 | ||
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This is the average! Quote:
Your hot pipe looks like its 3inches, that's the only odd thing i really see. maybe it's coated/wrapped or something. The intake manifold will help some probably after 6500rpm, but you need tuning to extract more power at the same boost level. #Don't be to disappointed.
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#868 | |
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The boost has since been altered to be a more stable 1,5-1,6 bar across the whole line. on the dyno we had a 0,8 bar WG spring. this has now been changed to 1,4 bar spring. The cold pipe is a custom 3 inch. Hot side from turbo is; 2" 90 degree from turbo, going in to ann 2,5" pipe going to IC. Hot side from IC to IM is 3" all the way. Every thing is painted black to keep ann OEM look. Intercooler is just some cheap E-bay stuff with some minor modifications. |
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#869 | |
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I did ask you, "galant_x" if you ever turned the boost up though? #860. thanks for replying. Sent from my Highly Tuned Galaxy S3.4!!!
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#870 |
ImageUploadedByTapatalk1404611521.984792.jpgImageUploadedByTapatalk1404611532.732942.jpgImageUploadedByTapatalk1404611540.582868.jpgImageUploadedByTapatalk1404611559.516205.jpg
Alright motor is finally in the car my 3in elbow needed some beating to clear the trans still haven't got it in perfect yet but shouldn't be a problem.... Sent from my iPhone using Tapatalk |
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gt2871, gtx, gtx2867r |
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