GT2871 USERS. SR motor

[GSXRJJordan]

wow codyace... that's an EXCELLENT setup. I agree that response and mid range is what makes these cars fun, and for your setup to hit 400whp is outstanding... and without standalone management! My hat's off to you ~

[codyace]

Originally Posted by JeffMilano

....and without standalone management! My hat's off to you ~

Thanks! I really gotta credit to Clark out at JWT. I'm unsure as to why everyone bashes JWT, because to be quite honest, they make a fine program and fantastic products. Certainly there are a few ponies extra to be had going standalone, but I'm the type of person that (if going standalone) would prefer to tune it myself....and being that I have ZERO knowledge in that area, JWT was the logical answer.

The setup is based (in my mind) in a maximum 'minimilist' setup. I love trying to extra the most out of the smallest setup. Hitting 400 hp would have been simple with a topmount and gt35r, but I'd rather have 400 hp on a quick spooling GT28 based turbo (Not to say a big top mount turbo isn't fun...because they certainly are, just in a very different way)

I've been told that the car should be capable of a low 12 second pass on streets, and mid to low 11's on slicks. To think my setup wasn't even BASED around the dragstrip too

While the dyno shows peak boost to start at 4100, I do achieve full spoool (20psi) at around 3750/3850 on the streets (I actually can make 10 psi around 3100/3200 rpm). I at one debated using a disco potato, but decided that I'd loose a 300 rpm in spool for a much greater top end.

To be quite honest, I would have been completly content with 300/320 whp. I typically drive daily with the EBC off, or at 15 psi...and even then it's plenty of power

[usdm180sx]

Ok thanks Ray. I guess I'm not the only one

[Amelia617]

Ok thanks Ray. I guess I'm not the only one

[CKAMC]

A Few of the AZ guys running 350 to the wheels on 100 oct get high 20's on gas mileage and one with the 86 trim hits 404 to the wheels and doesnt have a whole lot done to it.

Its all about the tune and correct installation of the products. Most of the guys have atleast 5 maps for different levels of boost and octane to help achieve safety/performance/economy in their cars. Who am I talking about? Champa,George,Blair,Justin. Justin has the fullrace silver s13 coupe, you may have seen some pics of him around (IE picture sucks thread)

Honestly responce > power goal... its how you use the power that counts. I aim for 300whp on a GT2535.. now that will be fun

[codyace]

Originally Posted by CKAMC

A Few of the AZ guys running 350 to the wheels on 100 oct get high 20's on gas mileage and one with the 86 trim hits 404 to the wheels and doesnt have a whole lot done to it.

I'll never understand the fascination with high octane fuel. 350 DOES NOT require big fuel.

Originally Posted by CKAMC

Its all about the tune and correct installation of the products. Most of the guys have atleast 5 maps for different levels of boost and octane to help achieve safety/performance/economy in their cars.

Again, why the need for all these maps? Are they running MAP based systems or? I will have 2 maps only for my car. Street, and track...the only difference being the track map will have a Water/Alcohol Injection setup with it. (For safety and durability)

Originally Posted by CKAMC

Honestly responce > power goal... its how you use the power that counts. I aim for 300whp on a GT2535.. now that will be fun

Amen brother. I've been trying to preach that forever, yet no one seems to catch on.

[dorkidori_s13]

Originally Posted by codyace

I'll never understand the fascination with high octane fuel. 350 DOES NOT require big fuel.

350 may not require 100 octane or higher fuel...but for those of us who live in arizona and nevada where it reaches 125+deg in direct sunlight in the summertime...that 100 octane is REAL important in a proper tune out here

every cali tuned car ive seen come to vegas always has either A) cooling issues or B) fuel delivery problems that only occur when they arrive here

i can understand back east where the level of octane at the pump can reach 94...but for us west coast people that live in extreme heat with HORRIBLE ambient air temps outside and lack of oxygen...and we can only get 91 at the pump...100 octane is one major reason our motors dont go explodey when reaching higher HP numbers and using em in the summer

[codyace]

Originally Posted by dorkidori_s13

350 may not require 100 octane or higher fuel...but for those of us who live in arizona and nevada where it reaches 125+deg in direct sunlight in the summertime...that 100 octane is REAL important in a proper tune out here

every cali tuned car ive seen come to vegas always has either A) cooling issues or B) fuel delivery problems that only occur when they arrive here

i can understand back east where the level of octane at the pump can reach 94...but for us west coast people that live in extreme heat with HORRIBLE ambient air temps outside and lack of oxygen...and we can only get 91 at the pump...100 octane is one major reason our motors dont go explodey when reaching higher HP numbers and using em in the summer

Good point! I certainly never considered this at all.

I'm certainly not comparing the east coast to your area (I've been in the dead of Summer in Death Valley, White Sands/Bliss, Hood, and Iraq, so I've got a good idea of dry heat), but you're also looking at an area where I live that does see mid to high 90s/100 in the summer, but also at obnoxious humidity levels. However, even with us having 93 (94 is getting harder and harder to find), the majority of us with decent power either:
-Don't boost around during the heat of day, and wait till night
or
-Have water injection.

As much as I hate to say it, I don't understand why more and more people don't have water injection...SOOOO much cheaper than race gas...

[Jbma327]

Originally Posted by CKAMC

Honestly responce > power goal... its how you use the power that counts. I aim for 300whp on a GT2535.. now that will be fun

I agree. Power was great and response was awesome!

I had Gt2535 turbo set up on my redtop s13 and made 287whp & 283 torque; pretty much maxed out the turbo at 1.2-1.3 bars

-550cc injector
-hks 256 cams
-n62
-sard fpr
-skyline fuel pump
-greddy ras
-stock bottom end & head gasket
-tune with a apexi neo at Smoothlinez (9828 Alpaca st., South El Monte, Ca)

[CKAMC]

codyace : for 350 they run it just because they have it avaliable... the maps are set on some of them for 91 and those have dyno-ed at 350 but when they feel like it they run 100 for fun or at events that they will run harder and usually during the summer as well with the heat out here.

the two cars that do run more than two maps do it so they have one for 91 with low boost, 91 with high boost, 100 with low boost, 100 with high boost. one guy (george) is known as the guy with the holly sr because never has it ran like crap or blown... it runs like a champ at all times lol lucky fuck.

[R3cK]

got some runs on our european board, got the sheets uploaded there, too.
if i should translate something,or want to see the dynopic, just ask.

"S14a GT2871R AR64 +264 - 412 PS 540NMS14a SR20DET - dyno 1,2 bar

Mehr Ladedruck war nicht moglich da die Kupllung uber 550NM nicht mehr mitspielen wolte

Motor Geschmiedet
JE KOlben + Eagle
Cosworth 1,5mm Zylinderkopfdichtung
ACL Race Pleuen
ARP Schrauben Kopf + Welle
264 Brian Crower Nocken
Rocker Arm Stopper - Tomei
Garrett GT2871R AR64 - XS Power Manifold
Greddy style LLK
3 Zoll Auspuffanlage
90 mm Infinity Q45 throtle body
Ansaugbrucke Greddy
nistune
"

"S14A mit GT2871R .86AR @ 1,2bar [390PS/526NM]Chassis: S14A

Motor: SR20DET
Modifikationen:

- Motor komplett original!
- Garrett GT2871R 0.86AR @ 1,2bar
- JECS 750cc
- Walbro
- Greddy Ladeluftkühler
- XS-Power Krümmer
- 3 Zoll ab Turbo
- Z32 LMM
- leichte Schwungmasse
- ACT heavy duty Kupplung
- K&N Luftfilter
- Nistune abgestimmt von Jonne ( www.sky-engineering.com )

Abgestimmt auf 1,4bar (im Sommer) - war aber nicht möglich, da es bei den Temperaturen zu Zündaussetzern kam. Neue Zündspulen sind geordert.

Datum: 19.12.2011
Temperatur in °: 9°

Max. Leistung am Motor in PS bei Drehzahl: 390PS bei 5698 U/min
Max. Drehmoment am Motor in Nm bei Drehzahl: 526 Nm bei 4676 U/min
Effektive Leistung an der Hinterachse in PS: 358 PS"

"PS13 SR20 gt2871 .86 @1.2bar 399,2psMotor is Stock
Hks264 nocken
Rocker Arm stopper
Z32 lmm
Hks krümmer
3zoll aga ab Turbo
555cc injectors.
Llk
Nistune mapped by jonne
450nm 399,2ps
337ps am Rad"

porn aka EFR:

"S14a EFR 6258 @1,4Bar 443,5PS 556,5NmStatistische Angaben:

Chassis: S14a
Motor: SR20
Modifikationen:

serien kopf,
serien nocken,
serien block, mit anderen Pleueln

BorgWarner EFR 6258
Amuse LLK
TiAL 60mm BOV
Fächerkrümmer

das wars

dyno 1,4Bar
street 1,6Bar

Datum:12-04-2011
Temperatur in ° 21

Max. Leistung am Motor in PS bei Drehzahl: 446,5 @ 5769rpm
Max. Drehmoment am Motor in Nm bei Drehzahl: 556,5Nm @ 5467rpm
Effektive Leistung an der Hinterachse in PS: 39,5PS Verlustleistung"

[Freddy]

Originally Posted by R3cK

got some runs on our european board, got the sheets uploaded there, too.
if i should translate something,or want to see the dynopic, just ask.
porn aka EFR:

"S14a EFR 6258 @1,4Bar 443,5PS 556,5NmStatistische Angaben:

Chassis: S14a
Motor: SR20
Modifikationen:

serien kopf,
serien nocken,
serien block, mit anderen Pleueln

BorgWarner EFR 6258
Amuse LLK
TiAL 60mm BOV
Fächerkrümmer

das wars

dyno 1,4Bar
street 1,6Bar

Datum:12-04-2011
Temperatur in ° 21

Max. Leistung am Motor in PS bei Drehzahl: 446,5 @ 5769rpm
Max. Drehmoment am Motor in Nm bei Drehzahl: 556,5Nm @ 5467rpm
Effektive Leistung an der Hinterachse in PS: 39,5PS Verlustleistung"

Can you translate, get the dyno sheet and picture of setup for this one please?

[gotta240]

Alright, looking at some used 2871r turbos.

Looking at this one but supposedly it only has the .50 intake. Also, whats up with that rectangular block that protrudes from the intake turbine housing? I've never seen a 2871r look like that. Even did a google picture search.

Also, another turbo I'm looking at has the vin plate etched in by hand. Most ive seen have the little serial plate stamped, but this looks like it was written by hand. Anyone seen that before?

[TFD]

@Freddy:

got some runs on our european board, got the sheets uploaded there, too.
if i should translate something,or want to see the dynopic, just ask.
porn aka EFR:

"S14a EFR 6258 @1,4Bar 443,5PS 556,5NmStatistische Angaben:

Chassis: S14a
Motor: SR20
Modifikationen:

serien kopf,
serien nocken,
serien block, mit anderen Pleueln

BorgWarner EFR 6258
Amuse LLK
TiAL 60mm BOV
Fächerkrümmer

das wars

dyno 1,4Bar
street 1,6Bar

Datum:12-04-2011
Temperatur in ° 21

Max. Leistung am Motor in PS bei Drehzahl: 446,5 @ 5769rpm
Max. Drehmoment am Motor in Nm bei Drehzahl: 556,5Nm @ 5467rpm
Effektive Leistung an der Hinterachse in PS: 39,5PS Verlustleistung"

Basicly a stock S14 SR20DET engine with a BorgWarner EFR 6258 turbo @ 1.4 bar (21 psi) and got 395 whp @ 5769 rpm. Torque is not accurate but around 340 wTq.

[gotta240]

Alright guys, going to check this turbo out in person tomorrow. Said to have about 2 thousand miles on it. Its supposed to be the .64 version. Can you guys give me any pointers of what to look for/avoid? How much in/out and up/down shaft play is "OK"? Thanks for your time as always

[/QUOTE]

[usdm180sx]

Yeah the VPro has like 4 maps so in the future I'll do another dyno tune for race gas.

[s13envy]

I'm using the .86 but unfortunately haven't had it to the dyno just yet. Although with my previous setup I was able to do a 11.59 @ 114 in the 1/4. That was with an FP Big28. My new best with the current setup is 11.011@125 (actually lifted due to misfiring). Previous dyno on the FP turbo showed 339hp & 361 torque. If I had to guess I would say I'm over 400hp and 400trq. But thats just a guess.

Modifications:

S13 redtop SR
GT2871R
AEM Tru-Boost gauge/controller
Megan Racing Turbo Manifold
Z32 MAF
Nismo 555cc Injectors
Enthalpy Tuned ECU
HKS 264 Step 2 cams
Comp Cam Springs
Cometic Headgasket
ARP headstuds
Greddy Rocker Arm Stoppers
HKS intake
Hybridynamics intake pipe

[OBEEWON]

Anyone have any updates on this? Specifically with the .86? I should be on the dyno within the next month or so and Im looking to see which cam is best suited for this turbine.

[Paul2x]

What about compairing the 2871r .64 to the 2871GT-RS style.....any power difference?

I know the GTRS style is a direct bolt on but will the 2871r (non-gtrs style) make more hp?

[Paul2x]

Originally Posted by Paul2x

What about compairing the 2871r .64 to the 2871GT-RS style.....any power difference?

I know the GTRS style is a direct bolt on but will the 2871r (non-gtrs style) make more hp?

CAn someone give some info on this please?

Is their any power difference?

[red s14]

Originally Posted by Paul2x

CAn someone give some info on this please?

Is their any power difference?

yea i would like to know about this also. and s13envy and i have a very close setup. i have,

red top bored to 86.5 with weisco piston. 8.5/1
cometic 1.2 metal hg
hks s2 264in/272ex cams
greddy intake
2871r .86 old style internal gated
enthalpy tune
nismo 740cc inj.
nismo fpr
z32 MAF
mr mani.
greddy o2 pipe
mr dp
mr mid pipe
apexi gt spec ex.

now i've talked to s13envy b4 but mine just doesn't seem like it runs that good. i can only about 3 cars on my friends stock sr with me running 22psi. it run's real rich but i've turned the fpr down. it should be at 36 psi. like steve shadows said my w/g jumps so much. i was going to sell the turbo and get the new gt-rs 2871r with the .64 and p/fc and go to the excel shop in columbus,oh. although i have yet to dyno it so maybe some small adjustments would help. there's no boost leaks, everything is button'd up i just don't know. any idea's on the new setup with the .64 and p/fc? don't go with? go with. codyace your setup is what i'm looking for although i don't need 400 whp. s13envy your setup as well like we've
talk about b4.

[steve shadows]

Originally Posted by Paul2x

CAn someone give some info on this please?

Is their any power difference?

they are both t28 housings and both gt turbine wheels of the same spec. iirc

If what you guys are saying is true about the housing just being internally gated and the compressor housing size and design.

The other difference is the compressor housing side. One beng to4b (not bolt on version) and one being a t25 style with triangle outlet flange.

HP diff? Turbine housing size and AR and will make the biggest difference overall, if they are both the same I cant seeing the volume or displacement of the compressor housing making a huge difference in numbers with the same compressor wheel, but i suppose lag might be slightly slighly reduced by the smaller t25 style bolt up design.

The to4b compressor housing could (theoretically) allow more shoulder room to the large crammed compressor wheel in overall output. It's a great question to ask someone who works for garrett or whos sharper with fluid dynamics.

plus Paul what are you doing! go get a 3071R maybe even twin scroll haha

[Paul2x]

car sould be running by tomrrow w/ the new set-up so, we'll see how she does.

hit the dyno , then u and luke better watch out.. LOL , j/k

[red s14]

[quote=steve shadows;1408014]they are both t28 housings and both gt turbine wheels of the same spec. iirc

If what you guys are saying is true about the housing just being internally gated and the compressor housing size and design.

The other difference is the compressor housing side. One beng to4b (not bolt on version) and one being a t25 style with triangle outlet flange.

HP diff? Turbine housing size and AR and will make the biggest difference overall, if they are both the same I cant seeing the volume or displacement of the compressor housing making a huge difference in numbers with the same compressor wheel, but i suppose lag might be slightly slighly reduced by the smaller t25 style bolt up design.

The to4b compressor housing could (theoretically) allow more shoulder room to the large crammed compressor wheel in overall output. It's a great question to ask someone who works for garrett or whos sharper with fluid dynamics.

reds14-i firured it was the same maybe spool time was diff. thats about it.

update guys! got rid of my old setup....going with sc61, 38mm wastegate, 810cc inj, ect!

The 2871R was an awesome turbo for me, but for some reason I decided I want more power lol..Its a sickness06-08-2007 02:42 AM

reds14-damn man is your turbo the gt-rs style or old style. your should bad ass like its not already. good luck.

[codyace]

Originally Posted by OBEEWON

Anyone have any updates on this? Specifically with the .86? I should be on the dyno within the next month or so and Im looking to see which cam is best suited for this turbine.

JWT S4 cams.

[OBEEWON]

Hey Cody, Havnt seen you on either forums for a while. I was really looking into the S4 cams, or the BC 264 intake/ 272 exhaust cams. You are running S4 cams correct? Can you give me any feedback on thier specs and performance. For instance how is drivability, idle, etc?

[codyace]

Originally Posted by OBEEWON

Hey Cody, Havnt seen you on either forums for a while. I was really looking into the S4 cams, or the BC 264 intake/ 272 exhaust cams. You are running S4 cams correct? Can you give me any feedback on thier specs and performance. For instance how is drivability, idle, etc?

I'm actually using JWT s3 cams, as I have a slightly smaller turbo, and was looking for the best mid range cam I could find for my HPDE driving. Idle is fine at stock 850, but for the most part it's suggested that you bump the idle up via IACV to about 925-950. When you order JWT ECU's, and you have their cams, you can actually ask for their S3 / S4 / S5 idle program to compensate.

The S4 cams however are better suited to your larger, .86 housing turbo, as it's more of a upper mid end to top end camshaft. Would S3's work? Yes, and well, but S4's IMO are better suited for the 2871r .86 and larger turbos, with the S3's being better for the 2871r .64, 28rs, and smaller series turbos (but they too work ok with larger ones.)

It's a trade off, but not in a bad way Either way you go will be good, but I tend to think S4's are just better per that application.

[OBEEWON]

That makes sense. What do you think about the Crower cams. The price is great and I was thinking of going 272 exhaust and 264 intake. The s4 cams are comparable to 264's right? or is it 272's?

Hey we missed you at the 240 meet. We are havning another one in May, maybe this time it wont rain. It would be nice to see your car in person.

[Wahl 136]

Originally Posted by OBEEWON

I was thinking of going 272 exhaust and 264 intake.

I have HKS Step 2 272 EX 264 IN cams, with a 2871 .86. I'm waiting on my head work and block to get back from the machine shop so I haven't tuned or dynoed yet. I know I've read in prior posts that this combination will have a smoother power band with torque that levels off at a highier RPM.

[codyace]

Originally Posted by OBEEWON

That makes sense. What do you think about the Crower cams. The price is great and I was thinking of going 272 exhaust and 264 intake. The s4 cams are comparable to 264's right? or is it 272's?

I don't have any input on BC cams, nor do I know enough results from the forum to give you an opinion them.

With that said however, I will say that JWT puts THE MOST time, effort, and research into Cam design and testing, and offers a product that is superior to all. The downfall of them is their cost, but it's a cost that's well worth it. I hope to someday be able to step up to a C series cam

Originally Posted by OBEEWON

Hey we missed you at the 240 meet. We are havning another one in May, maybe this time it wont rain. It would be nice to see your car in person.

Certainly! keep my informed!