GT2871 USERS. SR motor - Page 83 - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Conrad 2NR · 04-03-2012, 12:39 PM

...or a VVL head with the cams locked into the high lobe position.

EsChassisLove · 04-03-2012, 01:21 PM

I did. An entire Tomei kit of solid lifters is half the price of oem. But the JWT s3 cams are designed to work best with an oem head.

Black240Ct · 04-03-2012, 07:16 PM

with a s14 sr, greddy easy cams, 2871r on a haltech I made 330 at 16 psi.

going to be retuning with colder plugs and a larger gap on LS coils,

any input on this?

di-devol · 04-03-2012, 07:47 PM

^What dyno? I think that seems a tad low for 16psi

Def · 04-03-2012, 07:55 PM

Quote:

Originally Posted by Conrad 2NR

...or a VVL head with the cams locked into the high lobe position.

Why would you do that? The best part of VVL is getting some low and midrange back while still having a cam profile that rips above 8k RPM.

Def · 04-03-2012, 07:56 PM

Quote:

Originally Posted by Black240Ct

with a s14 sr, greddy easy cams, 2871r on a haltech I made 330 at 16 psi.

going to be retuning with colder plugs and a larger gap on LS coils,

any input on this?

You on a .64 or .86? Seems a bit low. I tuned a car on a fairly conservative tune at 13.5-14 psi, .64 2871R, HKS Step 1 264's. It made a little over 325 rwhp.

Were you getting ignition break up? I'd recommend iridium plugs - copper plugs are the hot setup of like 15 years ago.

Black240Ct · 04-03-2012, 08:14 PM

on a .64, did a conservative AFR and ignition maps.

Black240Ct · 04-03-2012, 08:22 PM

Quote:

Originally Posted by Def

Were you getting ignition break up? I'd recommend iridium plugs - copper plugs are the hot setup of like 15 years ago.

the 330 tune was on 7 heat range gapped to like .23

ill be running a 8 range with larger gap this time with the coils.

i wasnt getting any ignition break up i just had the chance to change coil set up and figure id try it out

codyace · 04-03-2012, 08:32 PM

Quote:

Originally Posted by Def

You on a .64 or .86? Seems a bit low. I tuned a car on a fairly conservative tune at 13.5-14 psi, .64 2871R, HKS Step 1 264's. It made a little over 325 rwhp.

Were you getting ignition break up? I'd recommend iridium plugs - copper plugs are the hot setup of like 15 years ago.

Sure iridium is nice, but Copper are cheap insurance in the respect that you can erradicate one of them and potentially save a piston (for the stock bottom end crew). Call is a funny 'failsafe' but they do work.

Quote:

Originally Posted by Black240Ct

the 330 tune was on 7 heat range gapped to like .23

ill be running a 8 range with larger gap this time with the coils.

i wasnt getting any ignition break up i just had the chance to change coil set up and figure id try it out

No reason for 8 range plugs, 7 range is plenty. What sort of timing are you running? Seems like more of a soft tune than anything.

Luvs2slide · 04-04-2012, 07:26 AM

How conservative are we talkin?

tabasco122 · 04-04-2012, 08:04 AM

Quote:

Originally Posted by tabasco122

Now i have to figure out what my issue is. Car runs fine on stock injectors, stock maf, stock ECU. when i drop in the DW 810's, enthalpy ECU, and z32 maf, i get issues. Wideband shows full lean at idle, car idles rough, etc. I was too chickenshit to take it for a drive with the idle like that. Adjusting fuel pressure does nothing, ecu seems to compensate for it. Sent my whole ECU to enthalpy, Martin put it in one of his workers' car with an almost identical setup, and it worked fine. Im thinking it has to be a closed loop issue because when i unplug the maf, AFR drops to 9:1. Tried 2 mafs, one known working, same results. Also tried adjusting the fuel pressure, etc. TPS and timing are set correctly. Injectors are brand new from DW, have the flow sheet and all.

anyone have any suggestions on what i can try here?

di-devol · 04-04-2012, 08:23 AM

Mine is doing the same thing, but with a JWT ecu. Full lean at idle, but fine driving. Go for a drive.

tabasco122 · 04-04-2012, 09:21 AM

its scary though! ill see when i get my ECU in.

Conrad 2NR · 04-04-2012, 12:35 PM

Quote:

Originally Posted by Def

Why would you do that? The best part of VVL is getting some low and midrange back while still having a cam profile that rips above 8k RPM.

Head flows much better.
No rocker arms coming out of place.
Easier to tune.
Less conversion costs albeit not that much more considering the entire conversion.
Not everyone is concerned about the first 4500 rpm band considering that you'd have another 4500 to play with if you like...not really ideal for a small turbo like the GT2871 I'd imagine though.

di-devol · 04-05-2012, 08:38 AM

Quote:

Originally Posted by tabasco122

its scary though! ill see when i get my ECU in.

Hey, I fixed my lean idle issue. Maf was too close to the turbo. Runs so much better, light throttle and tip-in is really nice now.

tabasco122 · 04-05-2012, 10:44 AM

Hmmm. Mine is pretty far, but I have a lot of bends and couplings. I just got in a 3" - 2.5 coupling do I'll see if that works with my Isis intake pipe.

di-devol · 04-05-2012, 11:14 AM

I have 3" from filter to turbo, I only moved it about 6" maybe.

tabasco122 · 04-05-2012, 01:20 PM

damn, i just realized, i doubt thats it because the sr maf is using the same piping when i swap to z32. probably not my issue, unless the z32 maf is more sensitive to placement.

di-devol · 04-05-2012, 01:38 PM

Hmm, I thought it fine where I had it too. I hit the dyno on Tueday.

tabasco122 · 04-05-2012, 01:42 PM

better dyno for real this time :-)

InsTanCeZ · 04-05-2012, 02:42 PM

What are your guys' thoughts on the Tomei Poncams on the S14 SR with the GT2871R .64 a/r? Are they any good? Also, this may be a n00b question, but what is the point of rocker arm stoppers? Are they really necessary? Oh, and with a mild setup like this is it better to run Z32 maf or Apexi D-Jetro for possible future upgrades?

di-devol · 04-05-2012, 02:48 PM

I'm running the Poncams on the s13 sr right now, feels good, don't know the power yet.

tabasco122 · 04-05-2012, 03:07 PM

according to codyace (i would consider him the expert on setups with this turbo) the best cams are the jwt s3's. easiest tuning solution is z32 maf with enthalpy or jwt tune.

Rocker arm stoppers - SR20 Forum

this is a decent thread on rocker arm stoppers, they are cheap insurance to prevent the rocker arms from coming off the HLA's and breaking.

usdm180sx · 04-05-2012, 06:17 PM

I just ordered some Tomei Procams 260 deg 12mm lift lash type. $325 out the door. I was gonna move on some HKS 264 step 2 cams but they go for $522 plus tax.

Heads up, if you DO want HKS cams Thmotorsports is the ONLY shop who has them in stock right now ready to ship. Ask for Jonathan ext 107

HIGHFIVEBETA · 04-06-2012, 10:27 AM

That's a GOOD deal. Can't say i got mine for that good of a price.

2stepGoesPowPow · 04-10-2012, 09:01 PM

so my setup is in, 2871r, tomei expreme manifold & turbo elbow, 740ccs & nistune. stock internals. I'm running 9lbs on my greddy profec b spec 2. i love the response compared to my old t25 and the turbo sounds muchhhhhh more serious spooling lol. i guess ill dyno my car soon and increase boost till I'm at like 320. safe for stock internals..rite? also I'm probably going to swap my profec b for a hallman manuel boost controller.

Black240Ct · 04-11-2012, 10:15 AM

graph on a dyno jet.

we did a few quick pulls to verify AFR while we adjusted Dwell time on the LS coils.

the dyno program wasnt reading RPM properly so i couldnt a shot of that graph.
not too sure how accurate these numbers are but the butt dyno feels nice

s14 sr, 2871 .64, greddy cams, 810cc, haltech

di-devol · 04-11-2012, 10:18 AM

What PSI was that at?

huffandpuff00 · 04-11-2012, 11:16 AM

^how did your visit to PSI go? graph?

di-devol · 04-11-2012, 11:37 AM

Flywheel came loose, just got it back together ahah. I rescheduled for Friday at 4:30.

I have the best luck ever.

04-03-2012, 12:39 PM	#2461
Conrad 2NR Zilvia Member Join Date: Mar 2011 Location: Trinidad & Tobago Posts: 179 Trader Rating: (0) Feedback Score: 0 reviews	...or a VVL head with the cams locked into the high lobe position. __________________ www.motoredge.wordpress.com

04-03-2012, 01:21 PM	#2462
EsChassisLove Nissanaholic! Join Date: Jan 2011 Location: San Diego Age: 32 Posts: 2,090 Trader Rating: (26) Feedback Score: 26 reviews	I did. An entire Tomei kit of solid lifters is half the price of oem. But the JWT s3 cams are designed to work best with an oem head. __________________ IG/TikTok-ThatS14_Z06guy

04-04-2012, 07:26 AM	#2470
Luvs2slide Zilvia FREAK! Join Date: Oct 2006 Location: NW Florida Age: 39 Posts: 1,490 Trader Rating: (81) Feedback Score: 81 reviews	How conservative are we talkin? __________________

04-05-2012, 06:17 PM	#2484
usdm180sx Post Whore! Join Date: Dec 2005 Location: 562 Posts: 4,807 Trader Rating: (5) Rides Gallery: usdm180sx Feedback Score: 5 reviews	I just ordered some Tomei Procams 260 deg 12mm lift lash type. $325 out the door. I was gonna move on some HKS 264 step 2 cams but they go for $522 plus tax. Heads up, if you DO want HKS cams Thmotorsports is the ONLY shop who has them in stock right now ready to ship. Ask for Jonathan ext 107 __________________ -Norm!

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04-03-2012, 07:16 PM	#2463
Black240Ct Zilvia Junkie Join Date: Sep 2003 Location: CT Age: 35 Posts: 563 Trader Rating: (6) Feedback Score: 6 reviews	with a s14 sr, greddy easy cams, 2871r on a haltech I made 330 at 16 psi. going to be retuning with colder plugs and a larger gap on LS coils, any input on this?

04-03-2012, 07:47 PM	#2464
di-devol Zilvia FREAK! Join Date: Jun 2010 Location: Woodinville Age: 39 Posts: 1,412 Trader Rating: (5) Feedback Score: 5 reviews	^What dyno? I think that seems a tad low for 16psi

04-03-2012, 08:14 PM	#2467
Black240Ct Zilvia Junkie Join Date: Sep 2003 Location: CT Age: 35 Posts: 563 Trader Rating: (6) Feedback Score: 6 reviews	on a .64, did a conservative AFR and ignition maps.

04-04-2012, 08:23 AM	#2472
di-devol Zilvia FREAK! Join Date: Jun 2010 Location: Woodinville Age: 39 Posts: 1,412 Trader Rating: (5) Feedback Score: 5 reviews	Mine is doing the same thing, but with a JWT ecu. Full lean at idle, but fine driving. Go for a drive.

04-04-2012, 09:21 AM	#2473
tabasco122 Zilvia Junkie Join Date: Feb 2011 Location: Houma, LA Age: 32 Posts: 321 Trader Rating: (5) Feedback Score: 5 reviews	its scary though! ill see when i get my ECU in.

04-05-2012, 10:44 AM	#2476
tabasco122 Zilvia Junkie Join Date: Feb 2011 Location: Houma, LA Age: 32 Posts: 321 Trader Rating: (5) Feedback Score: 5 reviews	Hmmm. Mine is pretty far, but I have a lot of bends and couplings. I just got in a 3" - 2.5 coupling do I'll see if that works with my Isis intake pipe.

04-05-2012, 11:14 AM	#2477
di-devol Zilvia FREAK! Join Date: Jun 2010 Location: Woodinville Age: 39 Posts: 1,412 Trader Rating: (5) Feedback Score: 5 reviews	I have 3" from filter to turbo, I only moved it about 6" maybe.

04-05-2012, 01:20 PM	#2478
tabasco122 Zilvia Junkie Join Date: Feb 2011 Location: Houma, LA Age: 32 Posts: 321 Trader Rating: (5) Feedback Score: 5 reviews	damn, i just realized, i doubt thats it because the sr maf is using the same piping when i swap to z32. probably not my issue, unless the z32 maf is more sensitive to placement.

04-05-2012, 01:38 PM	#2479
di-devol Zilvia FREAK! Join Date: Jun 2010 Location: Woodinville Age: 39 Posts: 1,412 Trader Rating: (5) Feedback Score: 5 reviews	Hmm, I thought it fine where I had it too. I hit the dyno on Tueday.

04-05-2012, 01:42 PM	#2480
tabasco122 Zilvia Junkie Join Date: Feb 2011 Location: Houma, LA Age: 32 Posts: 321 Trader Rating: (5) Feedback Score: 5 reviews	better dyno for real this time :-)

04-05-2012, 02:42 PM	#2481
InsTanCeZ Zilvia Addict Join Date: Feb 2012 Location: Queen City Age: 28 Posts: 722 Trader Rating: (0) Feedback Score: 0 reviews	What are your guys' thoughts on the Tomei Poncams on the S14 SR with the GT2871R .64 a/r? Are they any good? Also, this may be a n00b question, but what is the point of rocker arm stoppers? Are they really necessary? Oh, and with a mild setup like this is it better to run Z32 maf or Apexi D-Jetro for possible future upgrades?

04-05-2012, 02:48 PM	#2482
di-devol Zilvia FREAK! Join Date: Jun 2010 Location: Woodinville Age: 39 Posts: 1,412 Trader Rating: (5) Feedback Score: 5 reviews	I'm running the Poncams on the s13 sr right now, feels good, don't know the power yet.

04-05-2012, 03:07 PM	#2483
tabasco122 Zilvia Junkie Join Date: Feb 2011 Location: Houma, LA Age: 32 Posts: 321 Trader Rating: (5) Feedback Score: 5 reviews	according to codyace (i would consider him the expert on setups with this turbo) the best cams are the jwt s3's. easiest tuning solution is z32 maf with enthalpy or jwt tune. Rocker arm stoppers - SR20 Forum this is a decent thread on rocker arm stoppers, they are cheap insurance to prevent the rocker arms from coming off the HLA's and breaking.

04-06-2012, 10:27 AM	#2485
HIGHFIVEBETA Zilvia Junkie Join Date: Jun 2011 Location: Where the wild things are, FL Posts: 327 Trader Rating: (4) Feedback Score: 4 reviews	That's a GOOD deal. Can't say i got mine for that good of a price.

04-10-2012, 09:01 PM	#2486
2stepGoesPowPow Zilvia Addict Join Date: Sep 2011 Location: New York Age: 28 Posts: 946 Trader Rating: (10) Feedback Score: 10 reviews	so my setup is in, 2871r, tomei expreme manifold & turbo elbow, 740ccs & nistune. stock internals. I'm running 9lbs on my greddy profec b spec 2. i love the response compared to my old t25 and the turbo sounds muchhhhhh more serious spooling lol. i guess ill dyno my car soon and increase boost till I'm at like 320. safe for stock internals..rite? also I'm probably going to swap my profec b for a hallman manuel boost controller.

04-11-2012, 10:15 AM	#2487
Black240Ct Zilvia Junkie Join Date: Sep 2003 Location: CT Age: 35 Posts: 563 Trader Rating: (6) Feedback Score: 6 reviews	graph on a dyno jet. we did a few quick pulls to verify AFR while we adjusted Dwell time on the LS coils. the dyno program wasnt reading RPM properly so i couldnt a shot of that graph. not too sure how accurate these numbers are but the butt dyno feels nice s14 sr, 2871 .64, greddy cams, 810cc, haltech

04-11-2012, 10:18 AM	#2488
di-devol Zilvia FREAK! Join Date: Jun 2010 Location: Woodinville Age: 39 Posts: 1,412 Trader Rating: (5) Feedback Score: 5 reviews	What PSI was that at?

04-11-2012, 11:16 AM	#2489
huffandpuff00 Zilvia Addict Join Date: Jul 2006 Location: oregon Age: 35 Posts: 835 Trader Rating: (9) Feedback Score: 9 reviews	^how did your visit to PSI go? graph?

04-11-2012, 11:37 AM	#2490
di-devol Zilvia FREAK! Join Date: Jun 2010 Location: Woodinville Age: 39 Posts: 1,412 Trader Rating: (5) Feedback Score: 5 reviews	Flywheel came loose, just got it back together ahah. I rescheduled for Friday at 4:30. I have the best luck ever.