Upgrading to a gt2871r-15 turbo on the wifeys s13 redtop. Parts list look ok?

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SuicidnS13
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Joined: Sun Feb 10, 2008 5:13 am
Car: SC300 2jz, 93 Vert (RB), AcuraTL

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Ok so currrently we have the following items to upgrade her car. She will be running it at low low boost for a while. Please let me know if I am missing anything needed to install this as we cant have this car down for long and want to make sure I have everything for the upgrade to beable to bolt on and drive.

So far we have-gt2871r-15((.64)) (bolt on sr20det upgrade)CS bottom mount linesEnjuku Racing Fitting and Flange kit for Gt series turbosAP Racing boss LAP flange adaptor to use s13 intercooler hot pipe

Waiting to go on after rom-tuning-740cc DW injectorsz32 maf

Anything else needed. What about the inlet pipe? Do I need to modify anything for it to work? Or will it just bolt up to the new turbo.


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Neil
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The S15 style 2871's compressor inlet flange isn't clocked the same as on a T-25. If you band-saw your inlet pipe off at the flange, you can mark up where it will fit and have a shop tig it back together. GReddy sells an intake kit specifically for this turbo but it's $300+ and also includes a new cast outlet pipe which would be used instead of the APRacing flange adapter. I personally made my own custom intake setup with a 3" universal adapter from ATP and a couple old donor intake pipes and a couple new couplers. this also gave me the opportunity to recirculate my BOV, which you should do if you are running pull-through MAF. for the hot side, i used the original outlet, cut the last 90° bend out of my hotpipe, and ordered a 45° coupler with the appropriate in/out diameters to join them.

Get new nissan exhaust manifold, T2 flange, and T28 turbine exhaust flange gaskets. Get the S15 oil drain tube.

It's much easier to remove and reinstall the manifold/turbo as an assembly, rather than trying to swap the turbo in the engine bay. Also the exhaust flange is slightly different than the T25, so a stock iron T25 dump pipe won't bolt up without enlarging one of the holes. Also, you'll need the S15 oil drain tube because the t25 one doesn't point towards the block. you can bend the piss out it but you will probably will warp the flange and leak oil.

Before my injectors and e-manage, I was running the stock ECU and 2871 with no boost controller (10psi) and the car made 250hp to the wheels. Reinstalling my electronic boost controller has helped spool up and makes the car feel a lot less sluggish well before 10psi. and turned up to 14psi, well.. it hauls.

but since nobody wants to tune my e-manage, I'm considering putting back in my 370's and stock MAF because it was quick enough and my current tune makes the car run like crap.

..edit I went to enjukuracing and saw the fitting/flange kit.. if you get the cheaper S15 oil drain tube, you won't need anything in that kit except for maybe a new gasket which you can easily make on your own. The S15 style 2871 already has a restrictor incorporated into the CHRA housing, so that fitting is redundant. My turbo came with adjustable wastegate actuator linkage, too.
Modified by Neil at 6:52 PM 3/8/2008

SuicidnS13
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Joined: Sun Feb 10, 2008 5:13 am
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Awesome work man. Do you have any pics of the hotpipe. I want to see exactly where you cut it. We are currently running the ER s13 hotpipes with HKS SSQV 2's on them with no problems running open atmosphere. The greddys how ever had to be recirculated due to being a different design.

But if you have any pics of the work you did please post em up or email them to me at [email protected]

Also where can I get the s15 oil drain tube?

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Neil
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phase2motortrend sells the oil pipe..

as for the hotpipe i cant take a picture at the moment, my s13 is in my parents' garage. There's no exact way to do it... I cut off the bend and then more little by little, just to make sure i didn't cut off too much the first time.

if i go to my rents house i'll take a couple pictures and post them.

p.s., i hate my greddy rs. does the hks suffer from valve float at all? my rs whistles ALL THE TIME but if i make it any "tighter" the valve doesn't open enough to prevent compressor surge.
Modified by Neil at 7:24 PM 3/8/2008

SuicidnS13
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Joined: Sun Feb 10, 2008 5:13 am
Car: SC300 2jz, 93 Vert (RB), AcuraTL

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Will this item solve my piping issues?

http://phase2motorsports.store....html

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Neil
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Yes indeed.

SuicidnS13
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Joined: Sun Feb 10, 2008 5:13 am
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thanks and to answer your question with the HKS it doesnt get any valve float or surge at all. Its not even adjustable. Simple and does the job. I guy on FA did an awesome write up on why it works on our cars as an open Atmospheric BOV.

bruinbear714
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T28 turbo install kit. Everything you need in one package to install the 2871

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Neil
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It's funny that $200 gets you a kit that comes with hardware you can do without, and then any of the things you may actually need to make it work are listed as 'options'

but maybe i'm biased.. I enjoy light custom work, it makes the project feel more "mine" and I'm also not paying the premium for 'one stop kits to prevent running around and wasting time'.. but to be fair time does seem to be OP's concern.


Modified by Neil at 6:38 AM 3/15/2008


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