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Tech Talk Technical Discussion About The Nissan 240SX and Nissan Z Cars |
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#3811 | |
Zilvia Addict
![]() Join Date: Jan 2005
Location: Fullerton, CA
Age: 37
Posts: 658
Trader Rating: (13)
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GT2871r .86 1000cc ID S3 cam BC springs forged internal 8.5:1 compression stock exh manifold with internal gate freddy manifold aeromotive 340 pump 350hp dynapack (unmodified dynapack) 330hp with hood closed w/heatsoak tuned on CA 91 oct by Koji @ Autotalent |
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#3813 |
Zilvia Junkie
![]() Join Date: Oct 2013
Location: Savannah
Age: 34
Posts: 450
Trader Rating: (4)
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So the consensus for a solid reliable det head setup seems to be.
B15 Roller Rocker Lifters dual rocker arm guide conversion jwt cams and springs Correct? Will this setup allow you to spin to 9k rpm safely? Anything else we should add or modify while in there? |
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#3814 |
Premium Member
![]() Join Date: Oct 2004
Location: San Francisco, CA
Posts: 5,675
Trader Rating: (13)
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You can get any where... ATP Turbo, FRSport, Enjuku.. just remember its the smaller diameter restrictor, not the big one you have....
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#3817 |
Zilvia Junkie
![]() Join Date: Apr 2011
Location: Near Pittsburgh, PA
Posts: 582
Trader Rating: (1)
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Not an SR, but curious what some of your guys' input would be...
KA24DE-T, 360-375hp (preferably whp) with the supporting mods. Note on cams --> Only will play around with mixing / matching stock cams. GT2871R/GTX2867R? Or GTX2871R? Or GTX2971R (84 trim) due to being 2.4L? If GT2871 or GTX2867 I'd have to run boost ~21.5+. If GTXxx71R I'd only have to run boost ~18psi. |
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#3818 |
Zilvia Member
![]() Join Date: Aug 2007
Location: recliner of rage
Posts: 226
Trader Rating: (0)
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GT2871R .64 AR
S14 SR Pro EFI 48 Stock head Stock block Stock exhaust manifold Sard 550cc Injectors Sard Fuel Pressure Regulator Nissan OEM N15 Pulsar 70mm throttle body Tomei throttle body adaptor Stock intake manifold - port matched to 70mm throttle body FMIC 3" exhaust from turbo back 91 octane pump gas 17.8 psi boost 318.81 whp / 281.17 ft/tq Tuned by Justin @ Black Market Racing, Phoenix Arizona |
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#3819 |
I bought an SR20DET motor for my son to build for Christmas. He currently has a 1991 180SX which has a stock SR20DET redtop in it which will be replaced with this "built" spare. We are reviewing turbo upgrades to go along with his build and happened upon this thread. So far, we've had the block pressure checked, bored (86.5mm) and decked 10 thousandths. I already purchased BC 264 cams, BC springs, titanium retainers, SuperTech inconel oversized valves with all new guides and seals, BC forged rods with JE forged pistons, King bearings and a new HKS tubular exhaust manifold. Right now we are going to use the stock intake manifold with a Radium fuel rail, 750cc DeatschWerks injectors and an Aeromotive FPR. The head is going in to get cleaned up and a port/polish/valve job will be accomplished. He's looking for 350-400whp to be used for some road course racing @ VIR. He's been eyeing the GTX 2867 Gen2 series. With the current parts list he has, would the 2871R be a better choice for his desired output?
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#3820 | |
Zilvia Junkie
![]() Join Date: Oct 2013
Location: Savannah
Age: 34
Posts: 450
Trader Rating: (4)
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#3821 |
Thanks for that info....I'll check it out. I didn't realize people are not fond of the BC cams.
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#3823 |
Leaky Injector
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https://c1.staticflickr.com/5/4847/3...78bc57_o_d.png
Dyno tuned 2 days ago 391hp 436tq. Stock bottom end Sr20det black top, gt2871r .86, hks bottom mount mani, nismo740 inj, Jim wold s4 cams, and water meth kit These torque #s don’t seam right to me wouldnt mind someone’s opinion on why the two # is so high |
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#3825 | |
Zilvia FREAK!
![]() Join Date: Nov 2010
Location: arizona
Age: 32
Posts: 1,515
Trader Rating: (1)
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All that should be more than enough to support your power goals and then some. The 2871r is tried and true for this power range, but is at about its limit.
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Sr20det - z33 trans-e85 Desert Street Scene || Dssevents.com |
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#3826 | |
Zilvia FREAK!
![]() Join Date: Jun 2010
Location: Toronto, ON
Age: 31
Posts: 1,182
Trader Rating: (0)
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#3828 |
Used a 2871 with Jun 256/10,5 cams on an otherwise stock motor, very impressive in a 800kg car.
No Dyno graphs but made 215kw atw at 15psi, messed around with higher boost & e85 with some good results but this is a daily driver & needed to have it super reliable. I craved a little more power but wanted to stay at 15psi max so I opted for a GTX2976r, as I had no interest in going high on the boost, I ordered it with a 0.63 housing & T04B comp housing, capped it off with a SS bottom mount equil length manifold. The results were more than exceptable 15psi by 4100rpm, 243kw @ 7100rpm. I am thinking of maybe doing a cam change to the s4 perhaps or Tomei Pro 260/12 Hyd. |
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