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KrazyZenki
07-18-2005, 09:06 PM
I am looking into putting a setup together with goals of 450rwhp. I have researched alot and spent hours reading and searching through this forum. I have found good information but am looking for a little more. If you could please post a brief list of mods with dyno graph of setups that have produced around 450rwhp, I would really appreciate it. SR20s only please!
Thanks alot

BlazedGlory
07-19-2005, 12:41 PM
Yeah I've been researching for the same information. I want a turbo capable of making about 475whp near the top of its range, but I'll probably be running it around 400whp most of the time to be safe. I have a topspeed intake manifold, 700cc injectors, tial 38mm wastegate, nismo fpr, I plan on getting a peakboost turbo manifold. I'm going to get cams, but I'm not sure what kind yet, and I guess the cam choice will determine whether or not I get valvesprings and/or retainers... Not really sure what cams would be beneficial for that kind of power.

Not trying to thread jack, just sharing your goal and the pieces I've picked up so far...

Ovrated
07-19-2005, 12:47 PM
i just dyno'd 400.2 on pump gas with a base tune.

i have a redtop sr

hks 272 cams
AEM EMS
full race manifold
62-1 turbo mani
crower retainers
comp springs
p&p head
cp pistons
eagle rods
greddy intake mani (not installed for the dyno run)
820cc injectors (not installed for dyno.. was on 550's)
3" turbo back exhuast
greddy fmic
koyo rad
tial 38mm gate

a few other things as well... i did the 400WHP pull at 17psi on pump gas...

race gas and 25 psi... with the new intake mani, and injectors, should be well over 500

BlownDET
07-19-2005, 01:06 PM
Talk to Scott AKA Enthalpy, Been there done that!

Nikeboy355
07-19-2005, 02:05 PM
So many people are drag racing or doing freeway runs, huh?

This topic has been discussed too many times and I want to point out that a 500HP SR20 is not exactly "reliable" for every day driving... I think for a daily driver 300-325WHP is perfect...

I had a friend of a friend that had an SR with a T78 and he said that the car was slower than a stock 240 on the street and that he had to get it on the freeway to actually use his power... T78 is a little extreme but in general you can expect a more sluggish spool and then a kick in the ass for about 2500ish RPM...

The key to big power is just:
1. Large turbo... I like Greddy 25G or HKS T04Z but there are way too many turbos to choose from
2. Large injectors... for +400WHP you should be in the 740cc-ish range at stock fuel pressure
3. Serious engine management and some professional tuning... Standalone or the always reliable Enthalpy for a ROM tune...
4. All supporting mods including cams (go with HKS 264 or 272 step 2s), 3" exhaust, FMIC, metal head gasket (Apexi 1.1), etc.

It ALWAYS depends on what your purpose of the car is when figuring out your power... drag, drift, roadcoarse, wangan, etc. all have different power needs and in some cases too much power can ruin the fun and slow your times down...

S14_James
07-19-2005, 04:27 PM
I have a Greddy T67-25G kit on my car.
I'm at 450 whp with 1.5 kg/cm (21psi)
Cams are 264 HKS step 2.
400whp would be more in the 16-17 psi range for that turbo.
-James

killjoy
07-19-2005, 04:54 PM
Whats your spool like James? When are you hitting 20 pounds?

S14_James
07-19-2005, 08:45 PM
About 5000rpms, I'm hitting 21psi.
I'm looking to hit the top of this turbo soon, I'm going to push it out to the top of the MAF and see where the power is.
-James

jickel240
07-20-2005, 08:41 AM
I'm running eagle rods, cp pistons, greddy 1.2mm hg, arp hardware, hks 264 step 1s, Blitz 850cc's, stock fpr(not for long), stock fuel rail, stock intake mani (not for long too), aem ems, and a boostlogic sc61 kit. I hit 476rwhp @ 26 psi on a bigger, laggier sc61. I have the standard t350 turbine wheel'd sc61 now.

kinda off topic, I see S14_James is hitting 21 psi around 5100 rpms...I haven't ran my new sc61 to 20+psi levels yet, but when I run 18psi, I can only hit like .9ish bar at about 5k rpms. Isn't that a little laggy for this turbo?

S14_James
07-20-2005, 10:49 AM
I take it your running MAF-less.
Your tune can effect spool up, I'm also running a huge 94mm exhaust. You've left some power on the table with the stock lift cams though
-James

jickel240
07-20-2005, 01:31 PM
I take it your running MAF-less.
Your tune can effect spool up, I'm also running a huge 94mm exhaust. You've left some power on the table with the stock lift cams though
-James



Yeah, it's running pretty conservative timing wise. I was starting to wonder if it's the AVC-R boost controller I'm using too. I wonder what typical power gains are between stock lift 264s to higher lift 264 deg. cams.

S14_James
07-20-2005, 02:14 PM
Well based on my knowledge of the platform, I'm going to guess at least 20whp-30whp.
You really can't compare the garret turbo to the Greddy/mitsu turbo anyway your first turbo def had a higher potential for power, I feel I'm going to top out the turbo before I max out the MAF.
-James

RyanZ06
07-20-2005, 03:48 PM
Michael - Lets get a group buy on some HKS Step 2 or 3 272's http://forums.freshalloy.com/images/graemlins/cool.gif We can do our valve train together...

Also - you need to just suck it up, you put that big turbo on there, it's going to lag, but once you get all the supporting mods you need (intake mani, valve train, cams, head work) you'll be more than happy with the power im sure http://forums.freshalloy.com/images/graemlins/tongue.gif

S14_James
07-20-2005, 04:09 PM
Where are you reving out to anyways?
I make peak power at 7600rpm with a redline at 8000rpm
Step 3 are pretty heavy, you goto mechanical lifters
-James

RyanZ06
07-20-2005, 04:42 PM
Where are you reving out to anyways?
I make peak power at 7600rpm with a redline at 8000rpm
Step 3 are pretty heavy, you goto mechanical lifters
-James



exactly - HKS lash killer kit.. solid lifter.

killjoy
07-20-2005, 04:52 PM
I've said it once, I'll say it again.

Everybody cares so much and focues all their time on low spool but as soon as they get thrown back with that big "laggy turbo" they smile and forget all about it.

RyanZ06
07-20-2005, 05:11 PM
I've said it once, I'll say it again.

Everybody cares so much and focues all their time on low spool but as soon as they get thrown back with that big "laggy turbo" they smile and forget all about it.



exactly. I miss your car http://forums.freshalloy.com/images/graemlins/frown.gif

steve shadows
07-20-2005, 05:19 PM
So many people are drag racing or doing freeway runs, huh?

This topic has been discussed too many times and I want to point out that a 500HP SR20 is not exactly "reliable" for every day driving... I think for a daily driver 300-325WHP is perfect...

I had a friend of a friend that had an SR with a T78 and he said that the car was slower than a stock 240 on the street and that he had to get it on the freeway to actually use his power... T78 is a little extreme but in general you can expect a more sluggish spool and then a kick in the ass for about 2500ish RPM...

The key to big power is just:
1. Large turbo... I like Greddy 25G or HKS T04Z but there are way too many turbos to choose from
2. Large injectors... for +400WHP you should be in the 740cc-ish range at stock fuel pressure
3. Serious engine management and some professional tuning... Standalone or the always reliable Enthalpy for a ROM tune...
4. All supporting mods including cams (go with HKS 264 or 272 step 2s), 3" exhaust, FMIC, metal head gasket (Apexi 1.1), etc.

It ALWAYS depends on what your purpose of the car is when figuring out your power... drag, drift, roadcoarse, wangan, etc. all have different power needs and in some cases too much power can ruin the fun and slow your times down...



The problem is people do everything like they would a honda or because they are a noobie and sold their all motor civic recently to jump on the band wagon.

They typically do everything backwards or cheap styles.

Big turbo, mis-matched or oversized injectors (many think 555cc can only support 300 whp max cough XS engineering),impropperly designed manifold cough myself haha, wrong wastegate, bov, intercooler, exaust, they make everything jdm first and then forget the f-con can only be tuned by someone who can read japanese.

Its all about timing on the street. timing timing.

I have that problem with the 60trim sometimes. from rolls in 2nd to top of third i only put 2 cars on stock srs with tuned ecus and their boost at a bar.

On the fwy its over.

From a dead stop its typically pretty much rape by 3rd and 4th.

this is all on 91 octane with a mismatched ecu lol.

You have to get the timing, plug gap, manifold design and ignition setup right before you go throwing huge cams on there.

I honestly think cam sprockets on stock cams can be more helpful than anything. then get a standalone or haltech and go to town. I tryed a power fc for a week, amazing.

I have heard good thigs about the AEM unit as well.

I will keep you guys updated as I try to get some more connections with h

jickel240
07-20-2005, 06:45 PM
Michael - Lets get a group buy on some HKS Step 2 or 3 272's http://forums.freshalloy.com/images/graemlins/cool.gif We can do our valve train together...

Also - you need to just suck it up, you put that big turbo on there, it's going to lag, but once you get all the supporting mods you need (intake mani, valve train, cams, head work) you'll be more than happy with the power im sure http://forums.freshalloy.com/images/graemlins/tongue.gif




Yeah, the whole lag thing I'm used to, just when I see that I could be making more boost quicker with the current setup, I ***** http://forums.freshalloy.com/images/graemlins/grin.gif

jickel240
07-20-2005, 06:47 PM
The problem is people do everything like they would a honda or because they are a noobie and sold their all motor civic recently to jump on the band wagon.





I hope this isn't directed towards me, I'm defintely not a bandwagoneer. Check my member # http://forums.freshalloy.com/images/graemlins/wink.gif

S14_James
07-20-2005, 07:27 PM
I think he is just unhappy about the influx of drifting wannabes.
I'm not gonna lie though 5 years ago I was rocking out my first import and it was a turbo B-series. I went with the 240 in 02 because of the RWD. I've always been about the highway, my current setup reflects that.
40-70 punches for everybody!
-James

OHH_
07-20-2005, 08:19 PM
not to thread highjack but anyone have thoughts on a FP big T28, 550 injectors, 300zx maf and safc II (would get enthaply tune when money allows)--I primarily auto-x and the occasional drift so response would be a nice thing. Drag and highway are not my forte however yes, the huge surge of boost does put a smile on my face. Anyone think this setup with a new intake mani, exhaust mani, and cams (plus your "normal" bolt ons) would reach the 350+ area

RyanZ06
07-21-2005, 01:22 AM
not to thread highjack but anyone have thoughts on a FP big T28, 550 injectors, 300zx maf and safc II (would get enthaply tune when money allows)--I primarily auto-x and the occasional drift so response would be a nice thing. Drag and highway are not my forte however yes, the huge surge of boost does put a smile on my face. Anyone think this setup with a new intake mani, exhaust mani, and cams (plus your "normal" bolt ons) would reach the 350+ area



w/ cams and intake manifold - i dont see why it shouldnt see 350 rwhp depending on gas and tune..

S14_James
07-21-2005, 07:25 AM
I don't know anything about the FP28, I like the GT2871R .63a/r though. 4000 rpm boost is on to 20 psi, with cams that is 350whp no problem.
-James

OHH_
07-21-2005, 05:13 PM
i would go to a garret gt28 however i am poor, One of my friends thinks that the GT2871 is being played out and there are other options people are steering towards-true or not i dont know-I hope it is true and I will swindle someone into selling it to me-if i were to buy it new well I would not buy it-as I would spend a little more and get a little bigger one-but yeah they are nice

BlazedGlory
07-21-2005, 10:08 PM
not to thread highjack but anyone have thoughts on a FP big T28, 550 injectors, 300zx maf ...



"Not to thread highjack?" Your question had no relevance to this thread at all other than the fact that in this thread there were people talking about cars...

Am I the only one who noticed? http://forums.freshalloy.com/images/graemlins/grin.gif

Jsquared
07-22-2005, 12:36 AM
Everybody cares so much and focues all their time on low spool but as soon as they get thrown back with that big "laggy turbo" they smile and forget all about it.


It's fun for a car that only is used in a straight line. Try balancing a car through an apex with the throttle with a laggy setup. My dad's 944 turbo (a.k.a "951" to Porsche nerds) was super freaking laggy when it was stock. Full turbo-back exhaust, re-tuned ECUs (two chips, one 80s computer for timing and one 80s computer for fuel, hahaha), and some other stuff changed the car's character completely, it almost responds as well as my T25'ed SR coupe (T25s suck BTW). And it made a HUGE difference in the way you could drive the car in the twisties. Huge power is most certainly fun, but some of us would rather have a little better transient response than have enough power to smash our eyeballs in... not that there's anything wrong with that http://forums.freshalloy.com/images/graemlins/grin.gif

gatecrasher
07-22-2005, 09:20 AM
One of my friends thinks that the GT2871 is being played out




You should seek new friends.... your current one is retarded.

PR_S14
07-22-2005, 01:06 PM
I think "played out" would be incorrect phraseology. It works and everyone knows it. I just think that everyone is so infatuated with ball bearing that they forget all the turbos out there that are just as good for half the price. Just my opinion. If this is a which is the best bottom mount turbo arguement, then I'm at a loss of words. By all means, buy the "almighty" 2871R. The 2871R has become the SR swap in 240 land, everyone and their mom does it. http://forums.freshalloy.com/images/graemlins/rolleyes1.gif

Oh, and I had the feeling someone would say I'm retarded. You shouldn't talk about people that way.

kovert
07-22-2005, 01:26 PM
So many people are drag racing or doing freeway runs, huh?

This topic has been discussed too many times and I want to point out that a 500HP SR20 is not exactly "reliable" for every day driving... I think for a daily driver 300-325WHP is perfect...

I had a friend of a friend that had an SR with a T78 and he said that the car was slower than a stock 240 on the street and that he had to get it on the freeway to actually use his power... T78 is a little extreme but in general you can expect a more sluggish spool and then a kick in the ass for about 2500ish RPM...

The key to big power is just:
1. Large turbo... I like Greddy 25G or HKS T04Z but there are way too many turbos to choose from
2. Large injectors... for +400WHP you should be in the 740cc-ish range at stock fuel pressure
3. Serious engine management and some professional tuning... Standalone or the always reliable Enthalpy for a ROM tune...
4. All supporting mods including cams (go with HKS 264 or 272 step 2s), 3" exhaust, FMIC, metal head gasket (Apexi 1.1), etc.

It ALWAYS depends on what your purpose of the car is when figuring out your power... drag, drift, roadcoarse, wangan, etc. all have different power needs and in some cases too much power can ruin the fun and slow your times down...


a 500HP SR20 is not exactly "reliable" for every day driving - Who has proven this?

a friend that had an SR with a T78 and he said that the car was slower than a stock 240 on the street and that he had to get it on the freeway to actually use his power. - ...Thats kind of obvious, its a much larger turbo..takes longer too spool. but it also makes a hell of alot more power. common trade-off. although a t78 is alittle more extreme.. that is, if its actually 78mm

Enthalpy for a ROM tune... - cant rom tune for map sensors..which is required for high hp setups.

as far as all the name brand supporting mods go. the cometic 1.1mm HG is just as good as the apexi.

hks cams are not end-all be all.

3'' exhaust is not gonna be too happy with some of the larger turbine's.

740cc injectors are kinda small if you want alot of power.

intake manifold is a must, greddy or greddy knockoff.

a tubular $1000 manifold is NOT required. altough it will obviously help.



it pretty much goes like this:

400-450whp - stock cams/intake manifold, atleast 550cc injectors with alittle more base fuel pressure. z32 maf, and a turbo able to flow atleast 48lbs per min. but your better off with something in the 50 range because for over 400 on stock cams, your turbo needs to make up for it.

500+ map sensor, top feed rail, monster injectors, and a 60+lbs min turbo.

Angel
07-22-2005, 02:09 PM
Just an FYI, Greddy T78 comp wheel measures just over 66mm... and has similiar flow capability to a T66 ( high 600- low 700 rwhp range ), just not comparable boost threshold because of the hotside typically installed.

asad
07-22-2005, 02:19 PM
Just an FYI, Greddy T78 comp wheel measures just over 66mm...



GReddy names their big turbos differently than Garrett does.

GReddy T67 = TD06 hot side, TD07 cold side
Greddy T78 = TD07 hot side, TD08 cold side

whereas a garrett T66 or T72 or whatever has a 66mm or 72mm or whatever inducer diameter compressor wheel (though they do tend to round up...a T66 compressor is 2.580", or 65.532mm -- which gets rounded up to 66).

Asad

RyanZ06
07-22-2005, 04:08 PM
[QUOTE]

500+ map sensor, top feed rail, monster injectors, and a 60+lbs min turbo.





Map sensor - done, top feed rail - done, monster injectors - done, 60+lb turbo -done, high quality properly designed manifold - in progress http://forums.freshalloy.com/images/graemlins/grin.gif

I hope to make a little over 500 though http://forums.freshalloy.com/images/graemlins/wink.gif http://forums.freshalloy.com/images/graemlins/blush.gif

BlazedGlory
07-22-2005, 06:57 PM
what about a gt-32?

BlazedGlory
07-26-2005, 11:35 AM
any more thoughts on this topic? I'm still trying to pick a turbo for my peakboost manifold =/

RyanZ06
07-26-2005, 03:43 PM
Easy

Quick spool - 400whp - GT30R
Decent spool - 500 whp - GT35R
Bad Spool + need serious valve train for 8800+rpm - 650+whp - GT3767

kovert
07-26-2005, 06:29 PM
Easy

Quick spool - 400whp - GT30R
Decent spool - 500 whp - GT35R
Bad Spool + need serious valve train for 8800+rpm - 650+whp - GT3767


dont you mean GT3776? they dont make a 67MM GT37 as far as i am aware.

BlazedGlory
07-26-2005, 06:33 PM
Easy

Quick spool - 400whp - GT30R
Decent spool - 500 whp - GT35R
Bad Spool + need serious valve train for 8800+rpm - 650+whp - GT3767



This is my fault for not specifying, but how about some regular gt series turbos (not ball bearing).

sr20pushinboost
07-26-2005, 06:45 PM
Easy

Quick spool - 400whp - GT30R
Decent spool - 500 whp - GT35R
Bad Spool + need serious valve train for 8800+rpm - 650+whp - GT3767



This is my fault for not specifying, but how about some regular gt series turbos (not ball bearing).



i thought all GT series turbos were ball bearing?!?!

BlazedGlory
07-26-2005, 07:05 PM
Easy

Quick spool - 400whp - GT30R
Decent spool - 500 whp - GT35R
Bad Spool + need serious valve train for 8800+rpm - 650+whp - GT3767



This is my fault for not specifying, but how about some regular gt series turbos (not ball bearing).



i thought all GT series turbos were ball bearing?!?!



If they have an R at the end...

I was wondering about a turbo like perhaps a GT-32 for 450hp...

PR_S14
07-26-2005, 09:01 PM
SC50 or SC32 for 450.

sleepin99
07-26-2005, 10:08 PM
this is a little off topic but here it goes.

i am running a garret t4/t04r .70 comp and .70 exhaust on my 3.4 liter. do you guys think this is going to be lagging or not? what king of power do you think i can make? just double checking what i learned. thanks in advance. later.

RyanZ06
07-27-2005, 12:31 AM
No, GT3767, it's a non ball bearing T4/T67.. the turbo im using in my build up.

kovert
07-27-2005, 11:53 AM
No, GT3767, it's a non ball bearing T4/T67.. the turbo im using in my build up.

what compressor wheel does it use? what are the exhaust A/R options?

Papa Lazarou
07-28-2005, 06:22 PM
About 5000rpms, I'm hitting 21psi.
I'm looking to hit the top of this turbo soon, I'm going to push it out to the top of the MAF and see where the power is.
-James



What MAF are you running? The 25G should be able to support 500whp+. Its "rated" to 550ps in Greddy's catalog as the T67, the TD06SH and TD07S are rated at over 600ps.

I'm going to be using the T67 with a Z32 MAF. Hoping its going to be enough http://forums.freshalloy.com/images/graemlins/smile.gif

Papa Lazarou
07-28-2005, 06:25 PM
No, GT3767, it's a non ball bearing T4/T67.. the turbo im using in my build up.



That isn't a GT Series turbo surely? Its a T04R basically by the sound of it. 63 Trim 84mm compressor wheel with 67mm inducer? With a T4 hot side?

RyanZ06
07-28-2005, 07:26 PM
No, GT3767, it's a non ball bearing T4/T67.. the turbo im using in my build up.



That isn't a GT Series turbo surely? Its a T04R basically by the sound of it. 63 Trim 84mm compressor wheel with 67mm inducer? With a T4 hot side?



Non ball bearing

minime
07-28-2005, 08:03 PM
No, GT3767, it's a non ball bearing T4/T67.. the turbo im using in my build up.



That isn't a GT Series turbo surely? Its a T04R basically by the sound of it. 63 Trim 84mm compressor wheel with 67mm inducer? With a T4 hot side?



Non ball bearing



to4r's are non ball bearing.

VersionS13
07-28-2005, 09:21 PM
SC50 or SC32 for 450.

I'll be running a SC32, hopefully I will have some numbers posted up in a couple of weeks.

RyanZ06
07-28-2005, 11:56 PM
The GT3767 is a Non ball bearing 67mm compressor w/ .70 a/r "S" cover, with a .68 a/r T4 hot side. This turbo is also available with a .63 T3 hot side. The turbo is claimed to spool quicker than a normal T67 turbo because it uses Garret "GT" technology". This turbo using a One-Fab manifold made 680 whp using the T3 (.63) hot side, on a 1.8 liter honda motor, and 560 whp on a STOCK MOTOR H22 (the current record for H22) using the T4 hot side @ 23psi and 11 degrees of timing on C16. (The same hot side as mine).

Hope this helps, even though it mostly applys to honda motors http://forums.freshalloy.com/images/graemlins/wink.gif

kovert
07-29-2005, 12:08 AM
The GT3767 is a Non ball bearing 67mm compressor w/ .70 a/r "S" cover, with a .68 a/r T4 hot side. This turbo is also available with a .63 T3 hot side. The turbo is claimed to spool quicker than a normal T67 turbo because it uses Garret "GT" technology". This turbo using a One-Fab manifold made 680 whp using the T3 (.63) hot side, on a 1.8 liter honda motor, and 560 whp on a STOCK MOTOR H22 (the current record for H22) using the T4 hot side @ 23psi and 11 degrees of timing on C16. (The same hot side as mine).

Hope this helps, even though it mostly applys to honda motors http://forums.freshalloy.com/images/graemlins/wink.gif


im actually going to be running a very similar turbo. its sitting on my work bench till i can find a good deal on a AEM. Its capable of 700+Whp . T3/T67 ptrim .82 A/R

RyanZ06
07-29-2005, 12:30 AM
Depending on how much power you plan on making, that T3 exhaust could become a restriction towards the upper end. http://forums.freshalloy.com/images/graemlins/shocked.gif Do you have a full valve train?

Kouki14
07-29-2005, 04:03 AM
Do you have a full valve train?



Kinda hard to run without one http://forums.freshalloy.com/images/graemlins/tongue.gif

BlackBomber
07-29-2005, 06:28 AM
Depending on how much power you plan on making, that T3 exhaust could become a restriction towards the upper end. http://forums.freshalloy.com/images/graemlins/shocked.gif Do you have a full valve train?



the most i have seen a t3 backside with .63 a/r make was 606whp and that was at 29psi using a one-fab manifold on Vapor's old B18>>2.0 liter. A Precision SC61 turbo.

S14_James
07-29-2005, 10:44 AM
ANYTHING over 450whp should not run the MAF at all.
Trust me on this, the Z32 is becoming an issue and I'm not sure I'm going to buy into it getting to 550whp, I've been trying though. Besides you don't want to be hitting the limit of the MAF anyways, it is nice to have a little bit of a buffer zone, why do you think nissan uses mafs good 500 whp on a 300hp car, or 250whp maf on a 200hp car.
-James

steve shadows
07-29-2005, 10:54 AM
I have been curious of real world trials with the 60trim compressor wheel.

I also have a 50 trim.

I am thinking of going to an sc50 or sc61.

my max hp goal is 450whp

kovert
07-29-2005, 10:56 AM
the .82 a/r on my t3 is the same as the .63 on the t4. nearly identical. its not even really a t3, considering they basicly bore out the t3 housing to fit the t4 wheel.

i was reading about a 1.8 liter on honda-tech that made 735whp with the exact same turbo. quote-unquote "t3"

BlackBomber
07-29-2005, 11:18 AM
I have been curious of real world trials with the 60trim compressor wheel.

I also have a 50 trim.

I am thinking of going to an sc50 or sc61.

my max hp goal is 450whp



if 450 is your goal forget the SC61. better spool can be had for that power level.

kovert
07-29-2005, 11:26 AM
I have been curious of real world trials with the 60trim compressor wheel.

I also have a 50 trim.

I am thinking of going to an sc50 or sc61.

my max hp goal is 450whp


if 450 is your goal forget the SC61. better spool can be had for that power level.

I agree.. SC61 is a 600whp turbo.

jickel240
07-29-2005, 12:30 PM
I have been curious of real world trials with the 60trim compressor wheel.

I also have a 50 trim.

I am thinking of going to an sc50 or sc61.

my max hp goal is 450whp


if 450 is your goal forget the SC61. better spool can be had for that power level.

I agree.. SC61 is a 600whp turbo.




Not in my case http://forums.freshalloy.com/images/graemlins/tear.gif

kovert
07-29-2005, 12:51 PM
I have been curious of real world trials with the 60trim compressor wheel.

I also have a 50 trim.

I am thinking of going to an sc50 or sc61.

my max hp goal is 450whp


if 450 is your goal forget the SC61. better spool can be had for that power level.

I agree.. SC61 is a 600whp turbo.




Not in my case http://forums.freshalloy.com/images/graemlins/tear.gif

haha.. stock cams? or what?

jickel240
07-29-2005, 01:27 PM
haha.. stock cams? or what?




nope, just 264 step 1s..but i'm also on the stock intake manifold http://forums.freshalloy.com/images/graemlins/mad.gif

RyanZ06
07-29-2005, 01:33 PM
Stock intake manifold and baby penis cams = 476 rwhp http://forums.freshalloy.com/images/graemlins/wink.gif

I just got stallowned on those step 3 272's in teh classifieds http://forums.freshalloy.com/images/graemlins/frown.gif

Lets buy some from zack and get r dun.

kovert
07-29-2005, 01:39 PM
Stock intake manifold and baby penis cams = 476 rwhp http://forums.freshalloy.com/images/graemlins/wink.gif

I just got stallowned on those step 3 272's in teh classifieds http://forums.freshalloy.com/images/graemlins/frown.gif

Lets buy some from zack and get r dun.

272's? be a man and get some 280's http://forums.freshalloy.com/images/graemlins/grin.gif thats what im getting

jickel240
07-29-2005, 01:58 PM
Stock intake manifold and baby penis cams = 476 rwhp http://forums.freshalloy.com/images/graemlins/wink.gif

I just got stallowned on those step 3 272's in teh classifieds http://forums.freshalloy.com/images/graemlins/frown.gif

Lets buy some from zack and get r dun.



I'd like to, but my new 80 in a 45mph speeding ticket is gonna rape me http://forums.freshalloy.com/images/graemlins/blush.gif

steve shadows
07-29-2005, 02:59 PM
I have been curious of real world trials with the 60trim compressor wheel.

I also have a 50 trim.

I am thinking of going to an sc50 or sc61.

my max hp goal is 450whp



if 450 is your goal forget the SC61. better spool can be had for that power level.



Yes I know that. I was thinking of using it for a 550 level later on, but thats besides the point.

which precision turbo would you guys honestly get behind for efficent nice spool up 450whp, 500whp MAX turbocharger?

I was thinking sc50? That seems a little bit underated for the efficently producing 450whp levels without huffin it.

How about the sc32 or sc34 style or the 54 trim compressor wheel?


I have heard a lot of negative input from others on both th 50 trim and 60 trim in terms of broad power band efficency.

Just want more discussion as usual...

cwdmark
08-11-2005, 06:06 PM
bump.

looking for a nice turbo thats cheap and has decent spool. goal=450whp. full boost <= 4.5k.

stock cams?? http://forums.freshalloy.com/images/graemlins/grin.gif when do the hks 264 step 1's stop losing efficiency? im thinking 450whp might be a little past them, but maybe not.....

cwdmark
08-11-2005, 06:15 PM
400-450whp - stock cams/intake manifold, atleast 550cc injectors with alittle more base fuel pressure. z32 maf, and a turbo able to flow atleast 48lbs per min. but your better off with something in the 50 range because for over 400 on stock cams, your turbo needs to make up for it.


i was looking at the t3t4 .63ar with gt technology that jgy sells. they offer one that flows 48lbs/min and one that flows 53lbs/min. think that with hks 264 step 1's and topspeed intake manifold that the 48lb/min would be enough for 450whp? i just got my hands on a full race http://forums.freshalloy.com/images/graemlins/grin.gif looking for killer spool for a 450whp car... i dont want to go above 450whp due to maf/ecu restrictions.

kovert
08-12-2005, 10:36 AM
bump.

looking for a nice turbo thats cheap and has decent spool. goal=450whp. full boost <= 4.5k.

stock cams?? http://forums.freshalloy.com/images/graemlins/grin.gif when do the hks 264 step 1's stop losing efficiency? im thinking 450whp might be a little past them, but maybe not.....

60 trim t3/to4e .63 A/R with 264cams and intake manifold = 450+whp boost comes on at 4500

cwdmark
08-12-2005, 10:40 AM
i got a good deal on a .57 trim with the same specs, 4 bolt turbine discharge. its supposed to flow 50 lbs/min compared to 53 lbs/min with the 60 trim, hopefully it will give another 200 rpm spoolup or better. the 60 trim is rated at something like 490whp, which is a little past what i want, so i might as well just get a smaller one and get some better spool.

Brianb
08-12-2005, 11:20 AM
Leaving the BB world Mark?

Otherwise the GT3076R .63 T-31 or .63 GT would do what you are looking for.

killjoy
08-12-2005, 12:13 PM
I am leaving BB for sure. Just cause i don't have the money to throw into the pit since my other one was jacked.

kovert
08-12-2005, 02:53 PM
I am leaving BB for sure. Just cause i don't have the money to throw into the pit since my other one was jacked.

bb is overrated.

Brianb
08-12-2005, 04:59 PM
Not arguing with you as I have not used a bb yet (though I am in the market) so what do you mean by overated?

Does not help initial spool that much -or-
Transient response is no so hot -or-
Both -or-
other?

kovert
08-13-2005, 02:21 AM
Not arguing with you as I have not used a bb yet (though I am in the market) so what do you mean by overated?

Does not help initial spool that much -or-
Transient response is no so hot -or-
Both -or-
other?

im just being a smart ass.. BB IS overrated for drag racing, but any other use of a car, its not.

cwdmark
08-13-2005, 09:09 AM
Leaving the BB world Mark?

Otherwise the GT3076R .63 T-31 or .63 GT would do what you are looking for.


the t3t4e .57 should have full boost around 4500rpm's. a dual bb turbo such as the gt30r (which is probably what i would be running), or even the gt3071r .63, would definitely help aid in spool, but i dont feel like spending another $800 at this point in time just few a few hundred rpm spool. i have no experience with t3 turbos so this is my first go around... ill see how it is, and if i dont like it id probably get a gt3071r .63. its supposed to be a completely different turbo then the gt3071r .64 because of the t3 flange... i just need a cheap turbo to get me through the year and make good power http://forums.freshalloy.com/images/graemlins/grin.gif

comparing t3t4e's, the 50 trim has a max around 420whp and flows 48 lbs/min, the 57 trim has a max around 460whp and flows 50 lbs/min, and the 60 trim has a max around 490whp and flows 53 lbs/min.

i was undecided between the 50 and 60 trim, mainly because of spool time and power output. i wanted a little more power than 420whp, but i wanted better spoolup than full boost at 5k rpms. im guessing (and hoping) the 57 trim will resolve both of those issues...

Brianb
08-13-2005, 10:02 AM
I am about to order a GT3071R .63 T31.

I wonder if we get a few others looking for the same or similar if we could get a discount from a vendor?

SR_S14Zenki
08-13-2005, 12:48 PM
Where do you see full boost with a GT3071R? What is the max rated flow/hp for a GT3071R? My buddy has a GT3076 on his EVO(i know different setup) but he gets 20psi at about 4k...

Brianb
08-13-2005, 01:40 PM
From what I have heard by speaking with several vendors a 2.0 liter will see 1 bar around 3500-4000rpm on a 3071 and 4000-4500rpm on a 3076, both with a .63 T31.

The 3071 is rated for 450BHP and the 3076 for 500BHP.

Just as an FYI, a 2871 and 3071 use the same compressor wheel but different turbines, hence freeing up and extra ~50BHP.

The 3071 and 3076 use the same turbine wheel but the 3076 uses a larger (76MM versus 71mm) compressor wheel pumping an additonal ~50BHP.

Comparing the size differences between compressor wheel and turbine wheel you get: (15% or less is generally considered ideal)
GT28RS 10.25%
GT2871 24.2%
GT3071 15.5%
GT3076 21.1%

I think this info is useful if you are trying to decide between the three.

SR_S14Zenki
08-13-2005, 02:30 PM
are those for the spool numbers for ball bearing or non-ball bearing? Aren't the R's ball bearing?
edit: this looks like the winner to me...http://linux.forcedperformance.net/merchant2/merchant.mv?Screen=PROD&Store_Code=FP&Product_Code =NTGT3076R&Category_Code=Nissan-Turbo

maxxedsx
08-26-2005, 12:56 AM
I have the GT3071R .86, and I start seeing boost at 3000 RPM and I see 20 PSI at 6000-6500 RPM. I would say that 1 bar at 4000-4500 is prob right.

cwdmark
08-26-2005, 02:17 PM
I have the GT3071R .86, and I start seeing boost at 3000 RPM and I see 20 PSI at 6000-6500 RPM. I would say that 1 bar at 4000-4500 is prob right.



thats because you are running internal wastegate. i had the .64 trim on for about a week and it was just about the same. i had 14psi at k or a little before.

if you get an external wastegate...you should see 20psi in the 4k's, and it should eliminate your boost creep issue.