GT2871 USERS. SR motor - Page 10 - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

codyace · 07-07-2008, 01:25 PM

Quote:

Originally Posted by idahotuner

^ you made 312 rwhp at .85 bar. i would say that dynojet is reading way high.

On 109 octane he could have had the timing cranked to make the power too...

idahotuner · 07-07-2008, 01:35 PM

AWE... i see. i have my timing set at 15* BTDC ....

cody your dyno charts art showing on any of the forums any more.

mbvigil · 07-07-2008, 01:37 PM

yeah on a zilvia forum dyno it will probably be closer to 250whp

k's_silvia2.0 · 07-07-2008, 01:41 PM

^HAHA Matt!its true though.

mjjstang · 07-07-2008, 02:01 PM

Quote:

Originally Posted by 1cleanS13

After that, I'm done with the engine.

lol

asdfqweert

idahotuner · 07-10-2008, 10:53 AM

getting a dyno done on friday will post results once i get the sheet.

Z33dori · 07-10-2008, 11:09 AM

any one running a set up like this:
GT2871R .64 A/R
272 cams

i'm planning on doing this and i was curios to see how the power band plays out.

s13envy · 07-10-2008, 12:06 PM

i've got some BC 272 cams if you're interested. $200+shipping

((sr)) kelly · 07-10-2008, 12:09 PM

Quote:

Originally Posted by Z33dori

any one running a set up like this:
GT2871R .64 A/R
272 cams

i'm planning on doing this and i was curios to see how the power band plays out.

why 272 with a .64?

usdm180sx · 07-10-2008, 12:10 PM

Quote:

Originally Posted by Z33dori

any one running a set up like this:
GT2871R .64 A/R
272 cams

i'm planning on doing this and i was curios to see how the power band plays out.

.64 is for mid range. 272's are for top end. 264's are a better match.

((sr)) kelly · 07-10-2008, 12:14 PM

yeh... youd have to be retarded to run 272 on a small turbo like the .64...

Jordn · 07-10-2008, 12:30 PM

Dunno if this'll help anyone or if I'm justing whoring it out but heres my spec and graph from GT2871R .64 on a non VVTi SR20 Redtop. IIRC this was at 1.3 bar [19psi] on a Dyno Dynamics machine [I think these are more conservative than others!] running 97 octane.

The Spec

Engine
Rebuilt SR20DET
Apex-i headgasket
Apex-i mild duration cams [we think, we aren't THAT sure]
Greddy FMIC and Greddy Hardpipe kit
Tomei Power Extreme Tubular Manifold heat-wrapped
ARC Larger Winged and Baffled Sump
Z32 AFM
Apex-i Power FC and commander
Apex-i T28 Inlet Elbow
Apex-i Hard intake pipe
Apex-i Super Suction Intake
Garrett GT2871R Turbo with 0.64 housing built by Turbo Dynamics
Turbo Dynamics Adjustable actuator
Greddy Intake manifold
555cc injectors
Iridium 8 plugs
Stainless turbo elbow
Down pipe
Decat
Kakimoto cat back exhaust

Hope that serves as a decent comparison.

spirit · 07-10-2008, 12:49 PM

So... what should I change? Current mods:

HKS 87mm Sleves
Tomei 87x1.5mm Head Gasket
CP 87mm 9:1 Pistons
Eagle Rods
Brian Cower Valve Springs and Titanium Retainers
Brian Crower CNC Stainless Steel Intake & Exhaust Valves - BC3202 & BC3208 +0.5mm
Greddy Easy Camshaft Set 256/264 10.5 Lift
GT2871RS Turbo
APEXi Super Suction Kit
z32 MAF
XS Power 32x12x3 Front Mount Intercooler
Ebay/CXRacing.com Intercooler Pipe Kit
HKS SSQV Blow Off Valve (Recirculated)
ARP 204-4204 Head Studs
ARP 202-5402 Main Studs
Walbro 255
Nismo Fuel Pressure Regulator
Z32 Fuel Filter
Deatschwerks 650cc Fuel Injectors
APEXi PowerFC L-Detro
APEXi PowerFC Boost Controler Addon
ACT NS1-HDSS Clutch

91 Octane
1.4 bar boost

Z33dori · 07-10-2008, 01:27 PM

Quote:

Originally Posted by ((sr)) kelly

yeh... youd have to be retarded to run 272 on a small turbo like the .64...

i would it be retarded, just curious. i thought of the set b/c i figured:
would maintain a fairly quick spool time, but also allow for very strong top end power.

idk it was just a thought ..seems like it would work.

I mean i know .64 a/r w/ 264 is ideal setup, b/c they both incorporate midrange power. but i was looking for a mix and match setup, as stated above.

((sr)) kelly · 07-10-2008, 03:31 PM

Quote:

Originally Posted by Z33dori

i would it be retarded, just curious. i thought of the set b/c i figured:
would maintain a fairly quick spool time, but also allow for very strong top end power.

idk it was just a thought ..seems like it would work.

I mean i know .64 a/r w/ 264 is ideal setup, b/c they both incorporate midrange power. but i was looking for a mix and match setup, as stated above.

the .64 is a mid range turbo... by throwing in the 272 you are moving your powerband out of the ideal power band for the .64

now on the other hand you could prob use thos 272 with the .86 and do just fine.. but im running 264 12.0 lift and it makes power till redline

steve shadows · 07-10-2008, 03:32 PM

Quote:

Originally Posted by Jordn

Dunno if this'll help anyone or if I'm justing whoring it out but heres my spec and graph from GT2871R .64 on a non VVTi SR20 Redtop. IIRC this was at 1.3 bar [19psi] on a Dyno Dynamics machine [I think these are more conservative than others!] running 97 octane.

Hope that serves as a decent comparison.

Very nice - Yeah I use Dyno Dynamics and they are around 12-15% less than dynojets or other dynos like dynapacks.

good number, but the cams maybe a little aggressive looking at when peak torque comes on, nice torque btw! that's a lot on a DD.

((sr)) kelly · 07-10-2008, 03:36 PM

steeeeeve you have a pm..... i just have a quick question

Jordn · 07-10-2008, 04:17 PM

Quote:

Originally Posted by steve shadows

Very nice - Yeah I use Dyno Dynamics and they are around 12-15% less than dynojets or other dynos like dynapacks.

good number, but the cams maybe a little aggressive looking at when peak torque comes on, nice torque btw! that's a lot on a DD.

I'd be interested to hear a bit more about your thoughts on my figures and in particular any info you might guesstimate about my cams as I know very little about them!

steve shadows · 07-10-2008, 04:32 PM

Yeah Greddy are a grounp that I havent personally worked/tuned/used on cams (probably the only one haha)

Looks like a nice good bump in torque. The petrol we have in the states is aweful. So that is probably helping you out.

Check this out

[ame]http://www.youtube.com/watch?v=7i3JX18cGPs[/ame]

Graph is not as smooth but that was at 16 psi with the same fall off.

I am wondering if that fall off in torque is a symptom of the .64 turbine housing and not the cams. Or your cams (as with the car in the video) are just so conservative that it does nothing to extend the torque curve out further allowing for more efficiency and use of the compressor wheel.

I would say throwing in a set of HKS 264 Step 2's and re-tuning wouldnt be a bad way to go, or Tomei 260 cams for an even faster torque peak (better for drifting).

idahotuner · 07-10-2008, 05:46 PM

ok guys i am going to dyno tomorrow.
you guys think the walbro will be fine at 20 psi on my turbo. ? cause it isnt hardwired.
you think 92 octane is fine for 20 psi?should i do the pulls in 3rd or 4th .
4 has the 1:1 ratio but 3rd feel like it pulls harder then 4th

Jordn · 07-10-2008, 05:59 PM

Cheers again Steve, I am starting to get my head round it a bit now. Are you saying my cams come in too soon or too late? They are Apexi from what I was told on the spec sheet by the way, not Greddy. But I can't find much info on Apexi SR cams.

steve shadows · 07-10-2008, 08:28 PM

Yeah I didnt know apexi made sr cams.

Usually my experience is HKS or Tomei for engine internals and Apexi for Head Gasket or EMS.

Haltech is best EMS/Dollar imo though.

umsports · 07-10-2008, 08:33 PM

Quote:

Originally Posted by idahotuner

ok guys i am going to dyno tomorrow.
you guys think the walbro will be fine at 20 psi on my turbo. ? cause it isnt hardwired.
you think 92 octane is fine for 20 psi?should i do the pulls in 3rd or 4th .
4 has the 1:1 ratio but 3rd feel like it pulls harder then 4th

You need to do it in 4th because of the 1:1 ratio.

idahotuner · 07-11-2008, 12:01 AM

thanks man. that is what i will do.

idahotuner · 07-12-2008, 06:17 PM

well i made 416 hp at 20psi with it spiking to 24 psi the last few hundred rpms. but the thiing i thought was crazy was making 328 hp running off the waste gate. but i think my tun is more for higher end because at every different dyno run. my hp was 70 more then tq. so at 416 my tq was 350. and at 328 my tq was 250

idahotuner · 07-12-2008, 11:11 PM

here is the chart

Oneoverwrx · 07-13-2008, 02:54 PM

Can anyone tell me what is the fastest stock block 240? e.t? trap? ect.

s13envy · 07-13-2008, 08:06 PM

Quote:

Originally Posted by Oneoverwrx

Can anyone tell me what is the fastest stock block 240? e.t? trap? ect.

as far as i know, that would be hybridynamics car. i believe they ran a [email protected]+

fromxtor · 07-22-2008, 12:23 PM

Ok so I call up Garrett to find out more about the GT28 and I guess there are two trims, one rated at 400hp and the other 475hp(48/52trim)which should I go for?

Went to their sire and there are 5 71R listed(48/52/56 trim).

DrifterProdigy85 · 07-22-2008, 07:58 PM

I like the 56 trim. You will make more power with it.

07-07-2008, 01:37 PM	#273
mbvigil Zilvia Member Join Date: Feb 2006 Location: outside Age: 39 Posts: 164 Trader Rating: (2) Feedback Score: 2 reviews	yeah on a zilvia forum dyno it will probably be closer to 250whp __________________ i can drift better online

07-07-2008, 01:41 PM	#274
k's_silvia2.0 Post Whore! Join Date: Mar 2007 Location: 909/951 Age: 35 Posts: 5,111 Trader Rating: (17) Feedback Score: 17 reviews	^HAHA Matt!its true though. __________________

07-10-2008, 10:53 AM	#276
idahotuner Zilvia FREAK! Join Date: Jan 2008 Location: St. Maries, Idaho Age: 32 Posts: 1,276 Trader Rating: (17) Rides Gallery: idahotuner Feedback Score: 17 reviews	getting a dyno done on friday will post results once i get the sheet. __________________ My Twin Scroll Gt30r Sr22det Build

07-10-2008, 11:09 AM	#277
Z33dori Post Whore! Join Date: Dec 2006 Location: Riverview, FL Age: 32 Posts: 5,557 Trader Rating: (12) Feedback Score: 12 reviews	any one running a set up like this: GT2871R .64 A/R 272 cams i'm planning on doing this and i was curios to see how the power band plays out. __________________

07-10-2008, 12:49 PM	#283
spirit Zilvia Member Join Date: Dec 2005 Location: california Posts: 272 Trader Rating: (3) Feedback Score: 3 reviews	So... what should I change? Current mods: HKS 87mm Sleves Tomei 87x1.5mm Head Gasket CP 87mm 9:1 Pistons Eagle Rods Brian Cower Valve Springs and Titanium Retainers Brian Crower CNC Stainless Steel Intake & Exhaust Valves - BC3202 & BC3208 +0.5mm Greddy Easy Camshaft Set 256/264 10.5 Lift GT2871RS Turbo APEXi Super Suction Kit z32 MAF XS Power 32x12x3 Front Mount Intercooler Ebay/CXRacing.com Intercooler Pipe Kit HKS SSQV Blow Off Valve (Recirculated) ARP 204-4204 Head Studs ARP 202-5402 Main Studs Walbro 255 Nismo Fuel Pressure Regulator Z32 Fuel Filter Deatschwerks 650cc Fuel Injectors APEXi PowerFC L-Detro APEXi PowerFC Boost Controler Addon ACT NS1-HDSS Clutch 91 Octane 1.4 bar boost __________________

07-07-2008, 01:35 PM	#272
idahotuner Zilvia FREAK! Join Date: Jan 2008 Location: St. Maries, Idaho Age: 32 Posts: 1,276 Trader Rating: (17) Rides Gallery: idahotuner Feedback Score: 17 reviews	AWE... i see. i have my timing set at 15* BTDC .... cody your dyno charts art showing on any of the forums any more.

07-10-2008, 12:06 PM	#278
s13envy Zilvia Junkie Join Date: May 2004 Location: Shelbyville, IN Age: 37 Posts: 407 Trader Rating: (3) Feedback Score: 3 reviews	i've got some BC 272 cams if you're interested. $200+shipping

07-10-2008, 12:14 PM	#281
((sr)) kelly BANNED Join Date: Jun 2007 Location: Zebulon... NC Posts: 1,035 Trader Rating: (6) Feedback Score: 6 reviews	yeh... youd have to be retarded to run 272 on a small turbo like the .64...

07-10-2008, 12:30 PM	#282
Jordn Zilvia Junkie Join Date: Jun 2008 Location: Peterborough, England, UK, Across the pond. Age: 39 Posts: 304 Trader Rating: (1) Feedback Score: 1 reviews	Dunno if this'll help anyone or if I'm justing whoring it out but heres my spec and graph from GT2871R .64 on a non VVTi SR20 Redtop. IIRC this was at 1.3 bar [19psi] on a Dyno Dynamics machine [I think these are more conservative than others!] running 97 octane. The Spec Engine Rebuilt SR20DET Apex-i headgasket Apex-i mild duration cams [we think, we aren't THAT sure] Greddy FMIC and Greddy Hardpipe kit Tomei Power Extreme Tubular Manifold heat-wrapped ARC Larger Winged and Baffled Sump Z32 AFM Apex-i Power FC and commander Apex-i T28 Inlet Elbow Apex-i Hard intake pipe Apex-i Super Suction Intake Garrett GT2871R Turbo with 0.64 housing built by Turbo Dynamics Turbo Dynamics Adjustable actuator Greddy Intake manifold 555cc injectors Iridium 8 plugs Stainless turbo elbow Down pipe Decat Kakimoto cat back exhaust Hope that serves as a decent comparison.

07-10-2008, 03:36 PM	#287
((sr)) kelly BANNED Join Date: Jun 2007 Location: Zebulon... NC Posts: 1,035 Trader Rating: (6) Feedback Score: 6 reviews	steeeeeve you have a pm..... i just have a quick question

07-10-2008, 04:32 PM	#289
steve shadows Post Whore! Join Date: Aug 2003 Location: LA and OC Posts: 8,202 Trader Rating: (5) Feedback Score: 5 reviews	Yeah Greddy are a grounp that I havent personally worked/tuned/used on cams (probably the only one haha) Looks like a nice good bump in torque. The petrol we have in the states is aweful. So that is probably helping you out. Check this out [ame]http://www.youtube.com/watch?v=7i3JX18cGPs[/ame] Graph is not as smooth but that was at 16 psi with the same fall off. I am wondering if that fall off in torque is a symptom of the .64 turbine housing and not the cams. Or your cams (as with the car in the video) are just so conservative that it does nothing to extend the torque curve out further allowing for more efficiency and use of the compressor wheel. I would say throwing in a set of HKS 264 Step 2's and re-tuning wouldnt be a bad way to go, or Tomei 260 cams for an even faster torque peak (better for drifting). __________________ Like Me on FaceBook !

07-10-2008, 05:46 PM	#290
idahotuner Zilvia FREAK! Join Date: Jan 2008 Location: St. Maries, Idaho Age: 32 Posts: 1,276 Trader Rating: (17) Rides Gallery: idahotuner Feedback Score: 17 reviews	ok guys i am going to dyno tomorrow. you guys think the walbro will be fine at 20 psi on my turbo. ? cause it isnt hardwired. you think 92 octane is fine for 20 psi?should i do the pulls in 3rd or 4th . 4 has the 1:1 ratio but 3rd feel like it pulls harder then 4th __________________ My Twin Scroll Gt30r Sr22det Build

07-10-2008, 05:59 PM	#291
Jordn Zilvia Junkie Join Date: Jun 2008 Location: Peterborough, England, UK, Across the pond. Age: 39 Posts: 304 Trader Rating: (1) Feedback Score: 1 reviews	Cheers again Steve, I am starting to get my head round it a bit now. Are you saying my cams come in too soon or too late? They are Apexi from what I was told on the spec sheet by the way, not Greddy. But I can't find much info on Apexi SR cams.

07-10-2008, 08:28 PM	#292
steve shadows Post Whore! Join Date: Aug 2003 Location: LA and OC Posts: 8,202 Trader Rating: (5) Feedback Score: 5 reviews	Yeah I didnt know apexi made sr cams. Usually my experience is HKS or Tomei for engine internals and Apexi for Head Gasket or EMS. Haltech is best EMS/Dollar imo though. __________________ Like Me on FaceBook !

07-11-2008, 12:01 AM	#294
idahotuner Zilvia FREAK! Join Date: Jan 2008 Location: St. Maries, Idaho Age: 32 Posts: 1,276 Trader Rating: (17) Rides Gallery: idahotuner Feedback Score: 17 reviews	thanks man. that is what i will do. __________________ My Twin Scroll Gt30r Sr22det Build

07-12-2008, 06:17 PM	#295
idahotuner Zilvia FREAK! Join Date: Jan 2008 Location: St. Maries, Idaho Age: 32 Posts: 1,276 Trader Rating: (17) Rides Gallery: idahotuner Feedback Score: 17 reviews	well i made 416 hp at 20psi with it spiking to 24 psi the last few hundred rpms. but the thiing i thought was crazy was making 328 hp running off the waste gate. but i think my tun is more for higher end because at every different dyno run. my hp was 70 more then tq. so at 416 my tq was 350. and at 328 my tq was 250 __________________ My Twin Scroll Gt30r Sr22det Build

07-12-2008, 11:11 PM	#296
idahotuner Zilvia FREAK! Join Date: Jan 2008 Location: St. Maries, Idaho Age: 32 Posts: 1,276 Trader Rating: (17) Rides Gallery: idahotuner Feedback Score: 17 reviews	here is the chart __________________ My Twin Scroll Gt30r Sr22det Build

07-13-2008, 02:54 PM	#297
Oneoverwrx Leaky Injector Join Date: Aug 2007 Location: Kentucky Age: 34 Posts: 72 Trader Rating: (0) Feedback Score: 0 reviews	Can anyone tell me what is the fastest stock block 240? e.t? trap? ect.

07-22-2008, 12:23 PM	#299
fromxtor Post Whore! Join Date: Aug 2005 Location: NC Age: 40 Posts: 3,012 Trader Rating: (23) Feedback Score: 23 reviews	Ok so I call up Garrett to find out more about the GT28 and I guess there are two trims, one rated at 400hp and the other 475hp(48/52trim)which should I go for? Went to their sire and there are 5 71R listed(48/52/56 trim). __________________ Seller feedback>>http://www.zilvia.net/f/showthread.p...light=fromxtor

07-22-2008, 07:58 PM	#300
DrifterProdigy85 Leaky Injector Join Date: Aug 2004 Location: Glen Rock, PA Age: 35 Posts: 100 Trader Rating: (0) Feedback Score: 0 reviews	I like the 56 trim. You will make more power with it. __________________ 1995 Nissan 240sx RB25DET

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