GT2871 USERS. SR motor - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

OBEEWON · 11-10-2006, 10:27 AM

OK. Ive been doing alot of research lately and the results have been dissapointing to me. I have yet to find a dyno sheet of a .86 owner making 400 +whp, but I have seen a few .64 owners making such numbers. I was under the impression that you dont need cams on the .86 to reach 400, and that 460whp was possible. Even more disturbing was the fact that motors using .64 exhaust housings made more power on similar boost than motors on .86 GT2871's.

So, if you have a .86 or .64 A/R GT2871R please post a dyno sheet with mods, or your numbers, espescially for those in the 400whp range. If anyone can make sense of my findings please feel free to explain what you know.

OB

wootwoot · 11-10-2006, 10:51 AM

You need cams to make 400.

IngS14 · 11-10-2006, 11:00 AM

s14 zenki/s13 sr20det (stock internals)/GT2871R turbo/z32 mafs/550cc injectors/adjustable FPR/Fuel Pressure gauge/SAFC/wideband O2 on the dynojet putting down 325rwhp http://www.youtube.com/watch?v=pHllxSOwiXE

OBEEWON · 11-10-2006, 11:22 AM

Is that a .64, and do you have a ROM tune?

KiDyNomiTe · 11-10-2006, 11:42 AM

What boost is that car running?

Nicholas6211 · 05-11-2013, 07:30 PM

What boost is that car running?

AsleepAltima · 05-11-2013, 07:34 PM

Quote:

Originally Posted by Nicholas6211

What boost is that car running?

20-22 pounds. Ran great for a while

jamg · 05-11-2013, 07:41 PM

Quote:

Originally Posted by AsleepAltima

20-22 pounds. Ran great for a while

7k miles aint bad for 20ish pounds.

how much power did you put down?

inopsey · 05-12-2013, 07:02 AM

Quote:

Originally Posted by jamg

7k miles aint bad for 20ish pounds.

how much power did you put down?

7k miles is about 2-3 oil changes or a set of tires. a quality turbo should easily last longer than that.

kensreliableb18b · 11-10-2006, 11:52 AM

friends car: .64ar with 256/256 tomeis, escort manifold, boosted 1.5bar yielded 380whp/360tq. that should give you an idea. play with the cams. how much u wanna boost?

usdm180sx · 11-10-2006, 11:54 AM

I just dyno'd mine. The car was tuned at HKS USA on 91 octane pump gas (since that's what it will be running most of the time) and at 16.9 lbs of boost (1.15 bar). They had to limit it there since the b/c started spiking. Here is the graph:

GT-RS is ismilar to 2871r .64. The motor has the following mods:

• S14 SR20DET
• Apex N1 exhaust
• CP Pistons (86.5mm Bore, 8.5:1 CR)
• Eagle H-Beam Rods
• Apex 1.1mm head gasket
• ARP head studs
• ARP exhaust manifold studs
• Blitz Stainless Steel downpipe
• Blitz SBC iColor Boost Controller (With wideband a/f and water temperature gauge)
• Exedy Hyper Single clutch
• Kazama Stainless Steel 80mm test pipe
• Greddy valve springs
• Greddy rocker arm stoppers
• Greddy intake manifold
• Greddy racing suction metal intake pipe
• Crower titanium valve retainers
• Greddy S14 hotpipe
• Greddy RSPL HG FMIC
• Megan Racing Turbo Extension
• HKS GT-RS turbo
• HKS 256/264 step 1 cams
• HKS stainless exhaust manifold
• HKS FCon VPro
• HKS Universal Power Flow filter
• HKS mechanical boost gauge
• HKS SSQV Blow off valve kit
• SARD adjustable fuel pressure regulator and fitting
• Tomei/NISMO 740cc injectors
• Tomei fuel pump
• Tomei 70mm Throttle Body

These turbos are designed for RESPONSE. Their efficiency levels off at around 19-20lbs. While it is possible to get 400 on these turbos I'd recommend a bigger turbo at lower boost.

SoSideways · 11-10-2006, 11:56 AM

Well he made 275 rwhp at 1 BAR, so probably like 1.4 BAR, or around 20psi?

brainfood · 11-10-2006, 12:11 PM

Friends car with PFC when tuned made 375whp, stock bottom end. some headwork, 264 cams, tubular turbo mani, .86 housing, 15psi. I think it was on 100octane though. But still good power for very low boost.

OBEEWON · 11-10-2006, 12:22 PM

Im I the only one with a .86?

GSXRJJordan · 11-10-2006, 12:55 PM

cFinch used a .86 GT2871 on his 400whp Sr20 I think, try and dig up that thread. Everyone I know that has hit the 400 number has been using the .86 turbo, because the .64 levels off as you get close to redline. To add to that, every SINGLE person I know that has hit 400whp with a 2871 ends up getting a bigger turbo, like the GT3071 or T3/T4. It just doesnt pay off to run those types of boost numbers with that small a turbo.

Like USDM silvia said with the GT-RS (which is almost identical to the 2871 .64 BTW), those turbos are about hitting 350whp or so safely and with great response ~ if you want great response and 400whp, build the bottom end and put a lil n20 on it

nonissan · 11-10-2006, 01:25 PM

there's a thread on FA right now where 3 people came forward with 400ish whp on .64's. cams, obviously. stock exhaust mani on at least one.

not sure about the .86. i haven't paid much attention to that turbo because it is too much for what i want = 375ish.

i think matt vass was going either .86 or 3071, can't remember.

*fliprayzin240sx* · 11-10-2006, 01:40 PM

Most people opted for the smaller trim. I made 310whp @1.2 bar on 91 octane with a boost leak in my coupling that i didnt find till a week later. From my impression, it all depends on the tuning setup too. Ive seen people make 400 running power fcs. Check out Scott Avoys *enthalpy* and i know he got dyno sheets posted up in there that can give you ideas. Its possible to hit 400whp with it but not a whole lot can. If you want to make more power than that, id suggest going top mount and going T3 flanged turbo.

CarloSR · 11-10-2006, 02:00 PM

http://forums2.freshalloy.com/showthread.php?t=158176

hybrid_eg · 11-10-2006, 02:04 PM

with a .64, cams, injectors, enthalapy ECU, greddy intake man.. stock bottom.. although i had a big headgasket.. compression probably dropped to 8.1 i made 350whp at 19psi.. response on the car was great.. kicks in at very low RPM and felt great! excellent in my opinion for a daily driver..

brainfood · 11-10-2006, 02:47 PM

Quote:

Originally Posted by hybrid_eg

with a .64, cams, injectors, enthalapy ECU, greddy intake man.. stock bottom.. although i had a big headgasket.. compression probably dropped to 8.1 i made 350whp at 19psi.. response on the car was great.. kicks in at very low RPM and felt great! excellent in my opinion for a daily driver..

I would have to agree. If you are going for 350-400whp run the .64 even if you dont quite hit your hp goal the response more than makes up for it. Responsive turbo cars are 1000times more fun to drive than laggy ones. If you are looking for over 400whp go with a top mount t3 flanged turbo or a gt30+

OBEEWON · 11-10-2006, 02:55 PM

Quote:

Originally Posted by brainfood

I would have to agree. If you are going for 350-400whp run the .64 even if you dont quite hit your hp goal the response more than makes up for it. Responsive turbo cars are 1000times more fun to drive than laggy ones. If you are looking for over 400whp go with a top mount t3 flanged turbo or a gt30+

True, but where does that leave the .86 2871?

Anyone want a free turbo? LOL

91tofordee · 03-13-2009, 08:22 AM

Quote:

Originally Posted by OBEEWON

True, but where does that leave the .86 2871?

Anyone want a free turbo? LOL

yes i will take it off your hands

OBEEWON · 11-10-2006, 02:26 PM

Most of the dyno sheets Ive been reading are from Enthalpy. Torque seems to be kinda low on both .86 or .64. I remember reading that 460hp was possible, but Iver never seen any such numbers. The closest Ive seen was 427hp on a S14 for sale here. He didnt list if he had cams or not. Just said Z32 MAF, JWT ECU, 740's.

SoSideways · 11-10-2006, 02:47 PM

Looks like the S3 cams work really well with the .64 A/R version of the GT2871R.

codyace · 11-23-2006, 02:31 PM

Quote:

Originally Posted by nonissan

stock exhaust mani on at least one.

That would be me. Just simply extrude honed, and swain coated. IMO the cost of what I did will put you slight above a cheap crack-a-fold, but at about half the cost of a really nice bottom mount tubular setup. Major advantage of mine: It works, it fits, and it will never crack.

Quote:

Originally Posted by CarloSR

http://forums2.freshalloy.com/showthread.php?t=158176

Thats me again

Quote:

Originally Posted by SoSideways

Looks like the S3 cams work really well with the .64 A/R version of the GT2871R.

They work well with any response oriented engine. They are the most popular and powerful for a reason

Anywho, as some have said, it is achievable to reach 400 whp (and more) with a 2871r .64. I've got a stock bottom end redtop, running an 2871r .64 (extrude honed turbine side) and a stock (extruded and swaind) turbo manifold.

Simple parts that work with each other will always produce great results. All to often on these forums do we see mismatched cars that don't make the power they should (top end cams with small turbos, $1000 manifolds with $200 turbos etc etc)

My setup is pretty simple, and everything on the setup is designed to work in a way that creates maximum response and ultimate midrange torque. I take part in/compete in HPDE events, so I wasn't looking for some big power monster, as they are slow on the track, and not fun on the street. (Whats the point in roll racing from 60-120??) I'm a fan of being quick and having an all around animal of a car.

Mods:
Jim Wolf Technologies ECU
Cobra MAF
Mototron 60lbs Injectors
2871r .64 (extruded)
OEM turbo manifold (Extruded and swained)
Jim Wolf S3 Cams
Greddy o2 outlet
3" Downpipe
3" ExMag exhaust
Greddy Intake manifold.
Greddy FMIC setup.

Now this setup 'hopefully' will be making more power in the spring. I'm going to datalog my car, to send back out to JWT for a reflash and to have my water injection map tuned (for track days).

Here's the car:

Here's the Dyno Video (the speedo shot was done at 12 psi creeping to full....I will make another video of a speedo shot at a full 20 psi):

Youtube: http://www.youtube.com/watch?v=MDbB0b3xhHs
Download it here: http://govanman.com/ACEatthedyno.wmv

Here's the dyno:
@20 psi

kove · 11-22-2006, 11:22 PM

ill buy your .86 if you change your mind

usdm180sx · 11-23-2006, 02:50 PM

Just wondering, how's your mileage? Did it decrease?

*fliprayzin240sx* · 11-23-2006, 04:15 PM

Quote:

Originally Posted by usdmsilvia

Just wondering, how's your mileage? Did it decrease?

With my 740cc injectors...i was getting 16-18mpg. More power = more gas suckage!!! Also depends on how boost happy you are. There were times i barely broke 200 miles to a tank.

codyace · 11-23-2006, 05:05 PM

Quote:

Originally Posted by fliprayzin240sx

With my 740cc injectors...i was getting 16-18mpg. More power = more gas suckage!!! Also depends on how boost happy you are. There were times i barely broke 200 miles to a tank.

I get 29-31 on the highway cruising.

Now, if I decided that I'm gonna raise hell, lets just it's comparable to a v8 hehe

nismorb14 · 02-13-2011, 03:52 PM

hey man u have compressor adapters for a/c installs?ll i am interested whats the price shipped to tyler, tx.... 75701

11-10-2006, 10:27 AM	#1
OBEEWON Post Whore! Join Date: Feb 2006 Location: Hightened State of Emergency Posts: 6,053 Trader Rating: (9) Feedback Score: 9 reviews	GT2871 USERS. SR motor OK. Ive been doing alot of research lately and the results have been dissapointing to me. I have yet to find a dyno sheet of a .86 owner making 400 +whp, but I have seen a few .64 owners making such numbers. I was under the impression that you dont need cams on the .86 to reach 400, and that 460whp was possible. Even more disturbing was the fact that motors using .64 exhaust housings made more power on similar boost than motors on .86 GT2871's. So, if you have a .86 or .64 A/R GT2871R please post a dyno sheet with mods, or your numbers, espescially for those in the 400whp range. If anyone can make sense of my findings please feel free to explain what you know. OB __________________

11-10-2006, 10:51 AM	#2
wootwoot Post Whore! Join Date: Jan 2004 Location: sarasota florida biatch Age: 38 Posts: 3,850 Trader Rating: (0) Feedback Score: 0 reviews	You need cams to make 400. __________________ I'm from Florida so I'm probably a bit more strange than you

11-10-2006, 11:00 AM	#3
IngS14 Zilvia Addict Join Date: Jul 2004 Location: DriftHeaven,CA Age: 44 Posts: 647 Trader Rating: (7) Feedback Score: 7 reviews	s14 on the dyno and spec s14 zenki/s13 sr20det (stock internals)/GT2871R turbo/z32 mafs/550cc injectors/adjustable FPR/Fuel Pressure gauge/SAFC/wideband O2 on the dynojet putting down 325rwhp http://www.youtube.com/watch?v=pHllxSOwiXE __________________

11-10-2006, 11:22 AM	#4
OBEEWON Post Whore! Join Date: Feb 2006 Location: Hightened State of Emergency Posts: 6,053 Trader Rating: (9) Feedback Score: 9 reviews	Is that a .64, and do you have a ROM tune? __________________ Last edited by OBEEWON; 11-10-2006 at 11:49 AM..

11-10-2006, 11:42 AM	#5
KiDyNomiTe Post Whore! Join Date: Mar 2002 Location: Chicago Age: 37 Posts: 6,296 Trader Rating: (0) Rides Gallery: KiDyNomiTe Feedback Score: 0 reviews	What boost is that car running? __________________ PROCEED Grip Gambler

05-11-2013, 07:30 PM	#6
Nicholas6211 Join Date: May 2013 Location: usa Age: 34 Posts: 7 Trader Rating: (0) Feedback Score: 0 reviews	What boost is that car running?

11-10-2006, 11:52 AM	#10
kensreliableb18b Zilvia Addict Join Date: Jun 2004 Location: so cal - 626, 909, 562 and 949. 818 if i feel like running away Posts: 945 Trader Rating: (1) Feedback Score: 1 reviews	friends car: .64ar with 256/256 tomeis, escort manifold, boosted 1.5bar yielded 380whp/360tq. that should give you an idea. play with the cams. how much u wanna boost?

11-10-2006, 11:54 AM	#11
usdm180sx Post Whore! Join Date: Dec 2005 Location: 562 Posts: 4,807 Trader Rating: (5) Rides Gallery: usdm180sx Feedback Score: 5 reviews	I just dyno'd mine. The car was tuned at HKS USA on 91 octane pump gas (since that's what it will be running most of the time) and at 16.9 lbs of boost (1.15 bar). They had to limit it there since the b/c started spiking. Here is the graph: GT-RS is ismilar to 2871r .64. The motor has the following mods: • S14 SR20DET • Apex N1 exhaust • CP Pistons (86.5mm Bore, 8.5:1 CR) • Eagle H-Beam Rods • Apex 1.1mm head gasket • ARP head studs • ARP exhaust manifold studs • Blitz Stainless Steel downpipe • Blitz SBC iColor Boost Controller (With wideband a/f and water temperature gauge) • Exedy Hyper Single clutch • Kazama Stainless Steel 80mm test pipe • Greddy valve springs • Greddy rocker arm stoppers • Greddy intake manifold • Greddy racing suction metal intake pipe • Crower titanium valve retainers • Greddy S14 hotpipe • Greddy RSPL HG FMIC • Megan Racing Turbo Extension • HKS GT-RS turbo • HKS 256/264 step 1 cams • HKS stainless exhaust manifold • HKS FCon VPro • HKS Universal Power Flow filter • HKS mechanical boost gauge • HKS SSQV Blow off valve kit • SARD adjustable fuel pressure regulator and fitting • Tomei/NISMO 740cc injectors • Tomei fuel pump • Tomei 70mm Throttle Body These turbos are designed for RESPONSE. Their efficiency levels off at around 19-20lbs. While it is possible to get 400 on these turbos I'd recommend a bigger turbo at lower boost. __________________ -Norm!

11-10-2006, 11:56 AM	#12
SoSideways Post Whore! Join Date: Apr 2003 Location: 你老母 Posts: 4,371 Trader Rating: (4) Feedback Score: 4 reviews	Well he made 275 rwhp at 1 BAR, so probably like 1.4 BAR, or around 20psi? __________________ SoSideway's iTrader Rating!! *SoSideways' Review Thread!!* http://sosideways.wordpress.com/

11-10-2006, 12:11 PM	#13
brainfood Post Whore! Join Date: Jun 2004 Location: Eagle Rock, CA Age: 41 Posts: 2,957 Trader Rating: (18) Feedback Score: 18 reviews	Friends car with PFC when tuned made 375whp, stock bottom end. some headwork, 264 cams, tubular turbo mani, .86 housing, 15psi. I think it was on 100octane though. But still good power for very low boost. __________________ Bryan Rogers http://www.seriousbadass.com

11-10-2006, 12:22 PM	#14
OBEEWON Post Whore! Join Date: Feb 2006 Location: Hightened State of Emergency Posts: 6,053 Trader Rating: (9) Feedback Score: 9 reviews	Im I the only one with a .86? __________________

11-10-2006, 12:55 PM	#15
GSXRJJordan Post Whore! Join Date: May 2006 Location: San Diego, CA Posts: 9,135 Trader Rating: (19) Rides Gallery: GSXRJJordan Feedback Score: 19 reviews	cFinch used a .86 GT2871 on his 400whp Sr20 I think, try and dig up that thread. Everyone I know that has hit the 400 number has been using the .86 turbo, because the .64 levels off as you get close to redline. To add to that, every SINGLE person I know that has hit 400whp with a 2871 ends up getting a bigger turbo, like the GT3071 or T3/T4. It just doesnt pay off to run those types of boost numbers with that small a turbo. Like USDM silvia said with the GT-RS (which is almost identical to the 2871 .64 BTW), those turbos are about hitting 350whp or so safely and with great response ~ if you want great response and 400whp, build the bottom end and put a lil n20 on it __________________ Jordan Innovations has a new web site! www.JordanInnovations.com -- All your favorite FD Pro Drifters love it, trust me -- www.JordanInnovations.com

11-10-2006, 01:25 PM	#16
nonissan Leaky Injector Join Date: Jun 2002 Posts: 126 Trader Rating: (0) Feedback Score: 0 reviews	there's a thread on FA right now where 3 people came forward with 400ish whp on .64's. cams, obviously. stock exhaust mani on at least one. not sure about the .86. i haven't paid much attention to that turbo because it is too much for what i want = 375ish. i think matt vass was going either .86 or 3071, can't remember.

11-10-2006, 01:40 PM	#17
fliprayzin240sx Man w/ CTSV & a Car Seat Join Date: Aug 2002 Location: Tampa Posts: 17,998 Trader Rating: (19) Rides Gallery: fliprayzin240sx Feedback Score: 19 reviews	Most people opted for the smaller trim. I made 310whp @1.2 bar on 91 octane with a boost leak in my coupling that i didnt find till a week later. From my impression, it all depends on the tuning setup too. Ive seen people make 400 running power fcs. Check out Scott Avoys enthalpy and i know he got dyno sheets posted up in there that can give you ideas. Its possible to hit 400whp with it but not a whole lot can. If you want to make more power than that, id suggest going top mount and going T3 flanged turbo. __________________ If you think Zilvia has too many assholes... CLICK HERE!!!

11-10-2006, 02:00 PM	#18
CarloSR Leaky Injector Join Date: Jul 2005 Location: Dominican Republic Posts: 84 Trader Rating: (0) Feedback Score: 0 reviews	http://forums2.freshalloy.com/showthread.php?t=158176

11-10-2006, 02:04 PM	#19
hybrid_eg Zilvia Addict Join Date: Aug 2003 Location: SoCal Posts: 801 Trader Rating: (19) Feedback Score: 19 reviews	with a .64, cams, injectors, enthalapy ECU, greddy intake man.. stock bottom.. although i had a big headgasket.. compression probably dropped to 8.1 i made 350whp at 19psi.. response on the car was great.. kicks in at very low RPM and felt great! excellent in my opinion for a daily driver..

11-10-2006, 02:26 PM	#23
OBEEWON Post Whore! Join Date: Feb 2006 Location: Hightened State of Emergency Posts: 6,053 Trader Rating: (9) Feedback Score: 9 reviews	Most of the dyno sheets Ive been reading are from Enthalpy. Torque seems to be kinda low on both .86 or .64. I remember reading that 460hp was possible, but Iver never seen any such numbers. The closest Ive seen was 427hp on a S14 for sale here. He didnt list if he had cams or not. Just said Z32 MAF, JWT ECU, 740's. __________________

11-10-2006, 02:47 PM	#24
SoSideways Post Whore! Join Date: Apr 2003 Location: 你老母 Posts: 4,371 Trader Rating: (4) Feedback Score: 4 reviews	Looks like the S3 cams work really well with the .64 A/R version of the GT2871R. __________________ SoSideway's iTrader Rating!! *SoSideways' Review Thread!!* http://sosideways.wordpress.com/

11-22-2006, 11:22 PM	#26
kove Leaky Injector Join Date: Sep 2006 Location: Santa Fe NM Age: 44 Posts: 57 Trader Rating: (0) Feedback Score: 0 reviews	ill buy your .86 if you change your mind

11-23-2006, 02:50 PM	#27
usdm180sx Post Whore! Join Date: Dec 2005 Location: 562 Posts: 4,807 Trader Rating: (5) Rides Gallery: usdm180sx Feedback Score: 5 reviews	Just wondering, how's your mileage? Did it decrease? __________________ -Norm!

02-13-2011, 03:52 PM	#30
nismorb14 Join Date: Jan 2011 Location: Tyler, TX Age: 36 Posts: 2 Trader Rating: (0) Feedback Score: 0 reviews	hey man u have compressor adapters for a/c installs?ll i am interested whats the price shipped to tyler, tx.... 75701

Thread Tools
Show Printable Version Email this Page
Display Modes
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode