GT2871 USERS. SR motor

[battery1882]

Originally Posted by slider2828

No that hole is way too big.... It should be closer to a pin hole size unless you have a fitting on the block that restricts oil.

Agreed, make sure the bottom male end (mounted to turbo) has pin sized hole.

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

[Driftaholic84]

The block end, has the oem banjo fitting on it.
Where do I get said restrictor?

[e30gangsta]

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?

[slider2828]

Originally Posted by Driftaholic84

The block end, has the oem banjo fitting on it.
Where do I get said restrictor?

You can get any where... ATP Turbo, FRSport, Enjuku.. just remember its the smaller diameter restrictor, not the big one you have....

[derass]

Originally Posted by slider2828

just remember its the smaller diameter restrictor, not the big one you have....

~0.030" for ball bearing turbos

[Driftaholic84]

Ordered one from enjuku today for like $14.. thanks everyone.

[Bleakley]

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.

[JacksonBrown]

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

[DoingOK]

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?

[e30gangsta]

Originally Posted by DoingOK

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?

If you have the money to spend on a gtx2867 gen 2, might as well buy their new g550. The 2871r is old tech. The new one has insane amounts of response and great power. Also ditch those bc 264's and run some jwts4hl's.

[DoingOK]

Originally Posted by e30gangsta

If you have the money to spend on a gtx2867 gen 2, might as well buy their new g550. The 2871r is old tech. The new one has insane amounts of response and great power. Also ditch those bc 264's and run some jwts4hl's.

Thanks for that info....I'll check it out. I didn't realize people are not fond of the BC cams.

[e30gangsta]

Originally Posted by DoingOK

Thanks for that info....I'll check it out. I didn't realize people are not fond of the BC cams.

Ehhh they're not horrible. But jwt s3, s4, or s4hl is the much better choice.

[JL240]

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

[fatduece]

Lol you got those feel good numbers bruh!

[ultimateirving]

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.

Originally Posted by DoingOK

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?

[derass]

Originally Posted by JL240

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

That thing is spooling nicely. I assume that's around 20 psi. So full boost at 4300 RPM is really good, especially since it's a 0.86.

[JL240]

Yes you are correct great combo .86 with the s4

[SidewaySSS]

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.