GT2871 USERS. SR motor - Page 9 - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

mjjstang · 07-07-2008, 02:01 PM

Quote:

Originally Posted by 1cleanS13

After that, I'm done with the engine.

lol

asdfqweert

SoguRacing · 05-15-2008, 01:01 AM

I'd personally like to see hight torque numbers on mine. your guy was conservative but how conservative is the question.

rotation3x · 05-15-2008, 08:23 AM

Has anyone had a turbo that constantly gained boost?

On the dyno at 1/4 throttle boost showed 3-4 psi until 3800-4k rpm then it spiked to 18-19 and climbing. It did the same thing with the wastegate flapper held open.

I don't know much about tuning but the tuner said with the flap held open it should not make any boost or much at all.

I drove the car before the tune and it held 14 psi on my brand new stri gauge. I told the tuner that and he said my timing was 25 deg off and that was all it would make. I would think with timing that far off the car would hardly run at all.

My turbo was bought brand new from precision.

rotation3x · 05-20-2008, 05:59 PM

Is any one running a stock manifold not extruded swained anything just stock.

xxchurroxx · 05-20-2008, 06:07 PM

Quote:

Originally Posted by rotation3x

Is any one running a stock manifold not extruded swained anything just stock.

yeah. i'm running both stock intake AND exh mani

Quote:

Originally Posted by xxchurroxx

377 HP and 320 ft/lbs of torque at 18 psi

s14 SR
V-mounted IC/rad w/ dual FAL fans
larger s13 throttle body
stock intake and exhaust manifolds
stock bottom end w/ no head work done
GT2871r .64
BC 264 in/exh cams
BC spring and titanium retainers
z32 maf
Apex'i PFC L-Jetro
exedy stage 2
fidanza flywheel
Deatschwerks 600c injectors
CS flat DP/elbow
Apex GT Spec with JDM 3" gutted cat

FYI, exedy Stage 2 clutches slip @ 320 ft-lbs of torque...hence the flatter torque curve.

INeedNewTires · 05-20-2008, 08:13 PM

Quote:

Originally Posted by xxchurroxx

yeah. i'm running both stock intake AND exh mani

i second that.... but plan to do the extrude and swain sometime soon. Also think i may change to E85 setup and get a complete re-tune.... Should make a bit more power and cheaper at the pump....

rotation3x · 05-20-2008, 08:32 PM

yeah I pulled my turbo and manifold off. I noticed where the manifold goes to the engine it was black for about a 2 inches then changed to brown and where the turbo bolts to the manifold it was also brown.

Is there any reason for that?

1cleanS13 · 05-20-2008, 08:37 PM

Is it true that dynapacks read about 10% lower than dynojets? I saw a few comparison vids online showing back to back runs on the same car and conditions and the dynapack consistently read 8-10% lower every time no matter what car.

I was kinda wondering why my numbers seemed a little low at 1 bar making only 315whp and 289wtq....

Also, is the general rule of thumb that 1 psi = roughly 20whp? If so, at 18psi I should be around 370 which is what I expected but my tuner would only do a "conservative" tune on 91 octane pump gas. I thought the gt2871r .64 was most efficient between 18-21psi....

OBEEWON · 05-20-2008, 08:44 PM

More like 10whp per psi.

So at 21 you would be sitting pretty at about 400 in theory.

1cleanS13 · 05-20-2008, 09:19 PM

Quote:

Originally Posted by OBEEWON

More like 10whp per psi.

So at 21 you would be sitting pretty at about 400 in theory.

Cool, thanks for the info. Do most people run race gas or pump on 18-21psi? Most people do not state that in their posts when I am looking at all these dyno #s. I am in Arizona and it gets to 110 degrees here in the summer and all we have is 91 octane readily available so I dunno if it is that smart to run that high psi anyways in my conditions?

codyace · 05-21-2008, 12:02 AM

Quote:

Originally Posted by xxchurroxx

yeah. i'm running both stock intake AND exh mani

Nice numbers mang. Nice to see another smart 240 owner not wasting time with the tubular stuff

Your car would be an EXCELLENT candidate to see the differences in gain/loss with a Greddy Plenum.

Quote:

Originally Posted by 1cleanS13

Cool, thanks for the info. Do most people run race gas or pump on 18-21psi? Most people do not state that in their posts when I am looking at all these dyno #s. I am in Arizona and it gets to 110 degrees here in the summer and all we have is 91 octane readily available so I dunno if it is that smart to run that high psi anyways in my conditions?

I run pump 93 octane @ 20 psi (tuned for 91 tho)

1cleanS13 · 06-08-2008, 12:13 AM

Ended up finding out my timing was too advanced which is why the first tuner couldn't do as much with my car. Got my timing sorted out and had another guy that is more familar with SR's re-tune mine and I was able to up the boost to 18psi which is what I wanted originally. We just did a street tune with his wideband and laptop hooked up to my PFC. Now I just have to get to a dyno and do a couple pulls to see my new #s. Hoping for at least 350whp this time at 18psi on pump gas and if possible, I'd like to do a race gas pull with around 20psi.

s13envy · 05-21-2008, 07:05 AM

i was told by enthalpy that i could run 19psi on pump gas safely. anything over would require higher octane fuel.

OBEEWON · 05-21-2008, 07:45 AM

Thats cuz enthalpy sucks beezos. There are 10 and 11 sec Evo's on 93 pump.

As far as you guys in extreme heat I would take precaution. I dont know if you guys can get 94 over there in AZ, its dwindling even on the East. But if I was in the desert I would be doing Meth or water injection. But to be honest SR's run pretty cool, its just oiling that needs to be monitored.

KasperSlide · 05-21-2008, 08:30 AM

any one run a hks 256 step 1's. i know its a vary mild cam but i have them and will be installing them in my SR soon with a built head. hoping for 325-350whp @18psi. what do yall think

gt2871/RS type
hks waste gate
550 inj
z32maf
greddy int mani
megan ex mani
FMIC
full turbo back exhaust
elc fans
apexi PFC
apexi PFC boost control
custom intake

SoguRacing · 05-21-2008, 02:14 PM

Quote:

Originally Posted by KasperSlide

any one run a hks 256 step 1's. i know its a vary mild cam but i have them and will be installing them in my SR soon with a built head. hoping for 325-350whp @18psi. what do yall think

gt2871/RS type
hks waste gate
550 inj
z32maf
greddy int mani
megan ex mani
FMIC
full turbo back exhaust
elc fans
apexi PFC
apexi PFC boost control
custom intake

i have a similar setup and will be getting my car tuned soon. i have the hks step 1 256 with 10.5mm lift

1cleanS13 · 05-21-2008, 08:42 PM

Quote:

Originally Posted by OBEEWON

There are 10 and 11 sec Evo's on 93 pump.

As far as you guys in extreme heat I would take precaution. I dont know if you guys can get 94 over there in AZ, its dwindling even on the East. But if I was in the desert I would be doing Meth or water injection. But to be honest SR's run pretty cool, its just oiling that needs to be monitored.

There is one or 2 places that offer 100 octane at the pump for around $6 a gallon but its kinda way out of my way to get it on a consistent basis. Maybe it would be worth it to do maybe a half tank of 100 and 91 or something like that.

My SR never gets above 190 even in 110 degree heat with my ac on. Even sitting in traffic for 30 mins it won't go above 190 which is awesome.

I still want to get mine re-tuned for 18-20psi. All my tuner said before was my car was being "picky" with the timing, I am not sure what he meant but he wouldn't go above 1 bar with my car to play it safe. I just felt that was a little odd when I see people running 18-20psi all day long on the same pump gas with similar set ups.

surge s14 · 05-21-2008, 02:10 PM

^^enthalpy sucks? why is that i always hear there alright...
i was planing on sending out my ecu to them to get work done. then buy a wideban to monitor the system.

i dont want to do the whole standalone cuz i know know where to start or anyone who can tune it other then trailor the whole car 9 hours.

what about JWT?

dont flame me plz i juat want to get my faqs right

KasperSlide · 05-21-2008, 08:02 PM

sogu- def PM me when you get those numbers

slider2828 · 05-21-2008, 08:44 PM

I use HKS 256 Step 1 only on the exhaust side... I kept the stock exh mani and the stock intake cam for low end since I run a lot of autox.... Spools up quick 3500 on 2nd gear gives me about 16 psi....

But it depends on built... I have a fully built engine as well... I think 256's are great cams depend on hat track you run.... I hav T2 style none RS...

I heard enthalpy is good too

edit... I get VP Racing 93.5 and 100 on the pump near my house hahaha... I would never run above 16 on 91 pump gas... California 91 is COMPLETELY JUNK.... I run 18 and 20 on overboost no problems, but wouldn't run 20 psi all day though.... don't do much on my setup unless for passing on the straight or something....

Breing "picky" on timing means how much advance you run on the motor. Meaing how close to TDC you wanna run... I run about 5-6 degrees closer to TDC at redline... Closer you run at TDC near the top, the hotter the engine burns as well, but more power as well

OBEEWON · 05-23-2008, 04:22 AM

I ran two Enthalpy tunes on my car. First one was sub par. I got a reflash for my new set up and spent $1200 in trouble shooting only to find out he sent me one blank chip and another one with the info on the wrong side.
The customer service wasn't great but they did work with me. Every company has it's hickups, but my expirience was enough for me not to go back.

JWT is respectable but its best if you can get a tune for YOUR car. If you cant find someone who burns tunes, it would be worth it to buy the software for your laptop and the burner. It's not that hard to learn.

s13envy · 05-25-2008, 11:16 AM

i've had problems with the tunes i have gotten from enthalpy. I contacted him, told him my symptoms, he gave me a list of things to check instead of trying to tune around the problem. Checked those, which is not a bad idea to do anyway. After I checked everything I talked to him about it and he reflashed some chips for free. With one of his tunes, i was able to pull an 11.59 @ 114 on a FP Big28 turbo. I think he does pretty awesome work quite honestly.

codyace · 05-26-2008, 10:10 PM

Quote:

Originally Posted by s13envy

i've had problems with the tunes i have gotten from enthalpy. I contacted him, told him my symptoms, he gave me a list of things to check instead of trying to tune around the problem. Checked those, which is not a bad idea to do anyway. After I checked everything I talked to him about it and he reflashed some chips for free. With one of his tunes, i was able to pull an 11.59 @ 114 on a FP Big28 turbo. I think he does pretty awesome work quite honestly.

Scott is a standup guy, and would not give and advice or say anything that he doesn't truely mean. If he's burning the same tune (or similar) for multiple cars, there is no reason it shouldn't work in them, this side of somethin wacky.

JWT is the same way. I love my JWT stuff. Plug it in, turn the car on, doing burnouts down the street. Dead nice, right out of the box.

IN the grand scheme, JWT or Enthalpy offer awesome products that work great in the end. Both will take datalogs and tweak tunes for specific cars as well...can't get much better than that!

((sr)) kelly · 05-25-2008, 11:23 AM

114 is a lower speed at 11.5, what was your 60 foot? must have been amazing

s13envy · 05-26-2008, 11:08 PM

Quote:

Originally Posted by ((sr)) kelly

114 is a lower speed at 11.5, what was your 60 foot? must have been amazing

1.5 60ft time

i agree its a low trap for that ET, but I guess unlike most people i put my power to the ground. instead of having all this power and just spinning down the track, I'd rather have more traction than power

codyace · 05-27-2008, 03:28 PM

Quote:

Originally Posted by s13envy

1.5 60ft time

i agree its a low trap for that ET, but I guess unlike most people i put my power to the ground. instead of having all this power and just spinning down the track, I'd rather have more traction than power

Care to share your grip secrets lol?

s13envy · 06-07-2008, 11:41 PM

Quote:

Originally Posted by codyace

Care to share your grip secrets lol?

no secrets. i did those 60' times on 235/60/15 MT Street radial with some old Tein HR coilovers in the back. Just rode the clutch out from about 7000 rpms

Here is a link to a vid of me running my 11.0 with a 1.51 60' ft time. That GSX didn't want any

http://videos.streetfire.net/video/C...ile_149731.htm

GabeS14 · 06-08-2008, 11:58 PM

Quote:

Originally Posted by s13envy

no secrets. i did those 60' times on 235/60/15 MT Street radial with some old Tein HR coilovers in the back. Just rode the clutch out from about 7000 rpms

Here is a link to a vid of me running my 11.0 with a 1.51 60' ft time. That GSX didn't want any

http://videos.streetfire.net/video/C...ile_149731.htm

wow, i am impressed your car just goes, no spinning no lag, just takes off..thats sweet!
Mine spins a lot if i have the rpms up past 4k when taking off..and if i start under that i start fucking slow!!!
dammit..
I have 10.5" rims in rear, running 255's
should i go wider for beter take off?
I just send
CodyAce and S13Envy pm's...

idahotuner · 06-05-2008, 01:05 PM

drove my car today for the first time. the turbo was running off the waste gate cause i havent set up my AVC-r yet.
the spool was noticeably longer then the t25
but for running only 10psi once it hit full boost it just pulled and pulled
hit full boost around 4000 rpms + or -
the avc-r should inprove the spool up also get rid of the spikes i had occure. where the boost would jump up to 14psi.

as far as set up. that concerend with the turbo.
i have
gt2871.64 turbo
greddy intercooler
greddy intakmanifold
megan racing manifold
megan racing O2 housing
740cc injectors
BC264 cams
BC springs
apexi head gasket
ARP head studs
Z32 MAF
Piping pro intake
enthalpy tune ECU

droptoprx-7 · 06-08-2008, 02:28 PM

so is the gt2871r .64 too big for around 300hp. I was thinking of getting a bbt28 until someone i kno was trying to sell a .64 for a good price. i dont really want to start messing with the cams and what not if i dont have to. thanks

my setup would be something like
740cc
safc 2
z32 maf
koyo radiator
greddy intercooler
high flow manifold
full exaust
greddy r.a.s.
255 fuel pump
bb t28 or gt2871r .64 trim?

05-20-2008, 08:44 PM	#9
OBEEWON Post Whore! Join Date: Feb 2006 Location: Hightened State of Emergency Posts: 6,053 Trader Rating: (9) Feedback Score: 9 reviews	More like 10whp per psi. So at 21 you would be sitting pretty at about 400 in theory. __________________

05-21-2008, 07:45 AM	#14
OBEEWON Post Whore! Join Date: Feb 2006 Location: Hightened State of Emergency Posts: 6,053 Trader Rating: (9) Feedback Score: 9 reviews	Thats cuz enthalpy sucks beezos. There are 10 and 11 sec Evo's on 93 pump. As far as you guys in extreme heat I would take precaution. I dont know if you guys can get 94 over there in AZ, its dwindling even on the East. But if I was in the desert I would be doing Meth or water injection. But to be honest SR's run pretty cool, its just oiling that needs to be monitored. __________________

05-21-2008, 02:10 PM	#18
surge s14 Zilvia FREAK! Join Date: Dec 2005 Location: Laredo Texas Posts: 1,125 Trader Rating: (12) Feedback Score: 12 reviews	^^enthalpy sucks? why is that i always hear there alright... i was planing on sending out my ecu to them to get work done. then buy a wideban to monitor the system. i dont want to do the whole standalone cuz i know know where to start or anyone who can tune it other then trailor the whole car 9 hours. what about JWT? dont flame me plz i juat want to get my faqs right __________________

05-21-2008, 08:44 PM	#20
slider2828 Post Whore! Join Date: Oct 2004 Location: San Francisco, CA Posts: 6,040 Trader Rating: (13) Feedback Score: 13 reviews	I use HKS 256 Step 1 only on the exhaust side... I kept the stock exh mani and the stock intake cam for low end since I run a lot of autox.... Spools up quick 3500 on 2nd gear gives me about 16 psi.... But it depends on built... I have a fully built engine as well... I think 256's are great cams depend on hat track you run.... I hav T2 style none RS... I heard enthalpy is good too edit... I get VP Racing 93.5 and 100 on the pump near my house hahaha... I would never run above 16 on 91 pump gas... California 91 is COMPLETELY JUNK.... I run 18 and 20 on overboost no problems, but wouldn't run 20 psi all day though.... don't do much on my setup unless for passing on the straight or something.... Breing "picky" on timing means how much advance you run on the motor. Meaing how close to TDC you wanna run... I run about 5-6 degrees closer to TDC at redline... Closer you run at TDC near the top, the hotter the engine burns as well, but more power as well __________________ Turn and Burn!

05-23-2008, 04:22 AM	#21
OBEEWON Post Whore! Join Date: Feb 2006 Location: Hightened State of Emergency Posts: 6,053 Trader Rating: (9) Feedback Score: 9 reviews	I ran two Enthalpy tunes on my car. First one was sub par. I got a reflash for my new set up and spent $1200 in trouble shooting only to find out he sent me one blank chip and another one with the info on the wrong side. The customer service wasn't great but they did work with me. Every company has it's hickups, but my expirience was enough for me not to go back. JWT is respectable but its best if you can get a tune for YOUR car. If you cant find someone who burns tunes, it would be worth it to buy the software for your laptop and the burner. It's not that hard to learn. __________________

05-15-2008, 01:01 AM	#2
SoguRacing Post Whore! Join Date: Nov 2007 Location: (714) Age: 39 Posts: 2,967 Trader Rating: (23) Rides Gallery: SoguRacing Feedback Score: 23 reviews	I'd personally like to see hight torque numbers on mine. your guy was conservative but how conservative is the question.

05-15-2008, 08:23 AM	#3
rotation3x Zilvia Member Join Date: Jun 2005 Location: virginia Age: 39 Posts: 272 Trader Rating: (2) Feedback Score: 2 reviews	Has anyone had a turbo that constantly gained boost? On the dyno at 1/4 throttle boost showed 3-4 psi until 3800-4k rpm then it spiked to 18-19 and climbing. It did the same thing with the wastegate flapper held open. I don't know much about tuning but the tuner said with the flap held open it should not make any boost or much at all. I drove the car before the tune and it held 14 psi on my brand new stri gauge. I told the tuner that and he said my timing was 25 deg off and that was all it would make. I would think with timing that far off the car would hardly run at all. My turbo was bought brand new from precision.

05-20-2008, 05:59 PM	#4
rotation3x Zilvia Member Join Date: Jun 2005 Location: virginia Age: 39 Posts: 272 Trader Rating: (2) Feedback Score: 2 reviews	Is any one running a stock manifold not extruded swained anything just stock.

05-20-2008, 08:32 PM	#7
rotation3x Zilvia Member Join Date: Jun 2005 Location: virginia Age: 39 Posts: 272 Trader Rating: (2) Feedback Score: 2 reviews	yeah I pulled my turbo and manifold off. I noticed where the manifold goes to the engine it was black for about a 2 inches then changed to brown and where the turbo bolts to the manifold it was also brown. Is there any reason for that?

05-20-2008, 08:37 PM	#8
1cleanS13 Leaky Injector Join Date: Jun 2006 Location: Phoenix, Az Age: 46 Posts: 133 Trader Rating: (0) Feedback Score: 0 reviews	Is it true that dynapacks read about 10% lower than dynojets? I saw a few comparison vids online showing back to back runs on the same car and conditions and the dynapack consistently read 8-10% lower every time no matter what car. I was kinda wondering why my numbers seemed a little low at 1 bar making only 315whp and 289wtq.... Also, is the general rule of thumb that 1 psi = roughly 20whp? If so, at 18psi I should be around 370 which is what I expected but my tuner would only do a "conservative" tune on 91 octane pump gas. I thought the gt2871r .64 was most efficient between 18-21psi....

06-08-2008, 12:13 AM	#12
1cleanS13 Leaky Injector Join Date: Jun 2006 Location: Phoenix, Az Age: 46 Posts: 133 Trader Rating: (0) Feedback Score: 0 reviews	Ended up finding out my timing was too advanced which is why the first tuner couldn't do as much with my car. Got my timing sorted out and had another guy that is more familar with SR's re-tune mine and I was able to up the boost to 18psi which is what I wanted originally. We just did a street tune with his wideband and laptop hooked up to my PFC. Now I just have to get to a dyno and do a couple pulls to see my new #s. Hoping for at least 350whp this time at 18psi on pump gas and if possible, I'd like to do a race gas pull with around 20psi.

05-21-2008, 07:05 AM	#13
s13envy Zilvia Junkie Join Date: May 2004 Location: Shelbyville, IN Age: 41 Posts: 407 Trader Rating: (3) Feedback Score: 3 reviews	i was told by enthalpy that i could run 19psi on pump gas safely. anything over would require higher octane fuel.

05-21-2008, 08:30 AM	#15
KasperSlide Zilvia Member Join Date: Feb 2004 Location: North carolina Posts: 165 Trader Rating: (0) Feedback Score: 0 reviews	any one run a hks 256 step 1's. i know its a vary mild cam but i have them and will be installing them in my SR soon with a built head. hoping for 325-350whp @18psi. what do yall think gt2871/RS type hks waste gate 550 inj z32maf greddy int mani megan ex mani FMIC full turbo back exhaust elc fans apexi PFC apexi PFC boost control custom intake

05-21-2008, 08:02 PM	#19
KasperSlide Zilvia Member Join Date: Feb 2004 Location: North carolina Posts: 165 Trader Rating: (0) Feedback Score: 0 reviews	sogu- def PM me when you get those numbers

05-25-2008, 11:16 AM	#22
s13envy Zilvia Junkie Join Date: May 2004 Location: Shelbyville, IN Age: 41 Posts: 407 Trader Rating: (3) Feedback Score: 3 reviews	i've had problems with the tunes i have gotten from enthalpy. I contacted him, told him my symptoms, he gave me a list of things to check instead of trying to tune around the problem. Checked those, which is not a bad idea to do anyway. After I checked everything I talked to him about it and he reflashed some chips for free. With one of his tunes, i was able to pull an 11.59 @ 114 on a FP Big28 turbo. I think he does pretty awesome work quite honestly.

05-25-2008, 11:23 AM	#24
((sr)) kelly BANNED Join Date: Jun 2007 Location: Zebulon... NC Posts: 1,035 Trader Rating: (6) Feedback Score: 6 reviews	114 is a lower speed at 11.5, what was your 60 foot? must have been amazing

06-05-2008, 01:05 PM	#29
idahotuner Zilvia FREAK! Join Date: Jan 2008 Location: St. Maries, Idaho Age: 36 Posts: 1,276 Trader Rating: (17) Rides Gallery: idahotuner Feedback Score: 17 reviews	drove my car today for the first time. the turbo was running off the waste gate cause i havent set up my AVC-r yet. the spool was noticeably longer then the t25 but for running only 10psi once it hit full boost it just pulled and pulled hit full boost around 4000 rpms + or - the avc-r should inprove the spool up also get rid of the spikes i had occure. where the boost would jump up to 14psi. as far as set up. that concerend with the turbo. i have gt2871.64 turbo greddy intercooler greddy intakmanifold megan racing manifold megan racing O2 housing 740cc injectors BC264 cams BC springs apexi head gasket ARP head studs Z32 MAF Piping pro intake enthalpy tune ECU

06-08-2008, 02:28 PM	#30
droptoprx-7 Leaky Injector Join Date: Feb 2008 Location: sc Posts: 124 Trader Rating: (2) Feedback Score: 2 reviews	so is the gt2871r .64 too big for around 300hp. I was thinking of getting a bbt28 until someone i kno was trying to sell a .64 for a good price. i dont really want to start messing with the cams and what not if i dont have to. thanks my setup would be something like 740cc safc 2 z32 maf koyo radiator greddy intercooler high flow manifold full exaust greddy r.a.s. 255 fuel pump bb t28 or gt2871r .64 trim?