Dyno graphs of RB25 with GT35R?

[RideZX6R]

I'm trying to decide on a turbo and specs of it. I'm heavily leaning towards a GT3582R (56 trim 70 a/r cold side ... debating between the .63 and .82 a/r hot side)I'd like to see some dynp graphs to see where the turbo is gonna spool (power levels would be cool too)Any help is appreciated.

[Bwana]

What are your goals/plans for the car? What kind of power are you shooting for and what supporting mods have you done/are you doing?

[minivan_don]

go for the .63ar if its only for the street and running on pump gas. go .82 if you plan to do high boost + race gas or if you plan to hit the track frequently

[RideZX6R]

Don't take this the wrong way but I'm not asking for opinions. I'm asking for dyno graphs.I've learned way to harshly that people who think they know what theyre talking about, aren't always right.So I'd like to SEE the graphs and draw my own conclusions.

[Tripz]

Heres a dyno sheet with a GT35R with .70 compresser and .58 A/R. Hope this helps.

[minivan_don]

well its not my opinion ... i actually i have a gt35 .82 ... it works VERY well but im considering of buying the .63 ar for when im on the streets. just thougt id give you my feedback

im also waiting to use my dyno graphs for the "luanch" of some custom grind rb25 cams

good luck!
Modified by minivan_don at 7:51 PM 9/2/2007

[RideZX6R]

on that dyno graph how much boost was that? The monitor I'm using isn't that great, so the light text I can't really see. Looks like 13.5 psi?

well its not my opinion ... i actually i have a gt35 .82 ... it works VERY well but im considering of buying the .63 ar for when im on the streets. just thougt id give you my feedback

im also waiting to use my dyno graphs for the "luanch" of some custom grind rb25 cams

good luck!

Modified by minivan_don at 7:51 PM 9/2/2007

Thanks sir. I'm not trying to be a d!ck it's just I've had bad experience when I ask for something specific and people ask questions and then get off topic when I answer them with thier opinions. I just wanna SEE it myself. If/when you can show me the dyno graph, let me know.So thanks for understanding.

*Edit* - will say this ... I'd like to see close to 500whp on pump with a decently quick spool.

Modified by RideZX6R at 9:07 PM 9/2/2007
Modified by RideZX6R at 9:09 PM 9/2/2007

[Tripz]

13.2 psi. It's just running on the wastegate spring. It made 370.4whp and 282 torque at 6700 rpm on a mustang dyno. As you can see from the graph, it looks like the power will keep going up past 6700 rpm. Made full boost at 3800-3900 rpm.

Edit: this is on pump gas 94 octane.

[RideZX6R]

Right on.What's the A/R of the turbine side?

[Kansei240sx]

Why dont you just get the trims of various ones you want, look at compressor maps and then calculate it based on the displacement of your motor.

Instead of going of peoples dyno charts, its best to have some math and better knowledge behind your decision.

The GT35R is a near perfect turbo for this motor because its surge line is near just straight up, but there are different trims that make it different than the next. I'd just go plot away, i know i am for my setup.

[RideZX6R]

Why dont you just get the trims of various ones you want, look at compressor maps and then calculate it based on the displacement of your motor.

Instead of going of peoples dyno charts, its best to have some math and better knowledge behind your decision.

The GT35R is a near perfect turbo for this motor because its surge line is near just straight up, but there are different trims that make it different than the next. I'd just go plot away, i know i am for my setup.

I actually did that already (remember the part where I said I was debating between two different turbos - how do you think I got to those two?) and while it'll definitely tell you how efficient (which is what a compressor map will tell you - how efficient a turbo is - provided you know the pressure ration and corrected mass flow) the turbo is. It WILL NOT tell you how and where the turbo will spool.I did all the work myself here man ... If I needed compressor maps and **** I'd have asked for them here or went and looked for em myself (actually I did) I'm dumbing it down here I'm only asking for what I need.Which is why I'm looking for dyno graphs... I'd like to see WHERE the .63 hotside A/R will spool in comparison to an .82 A/R hotside.Also I'd like to see what whp levels are seen at what boost levels.

So instead of spouting off at the mouth about compressor maps acting like I don't know what the **** I'm talking about (or trying to act like YOU know what youre talking about) ... How about you shut up or simply show me YOUR dyno graph with a 35R on a RB25 and then tell me the specs of the turbo in specific, unless of course, you don't have one?

[eh?]

Try skyline australia forums. They have a thread with just RB25 dyno graphs.

[RideZX6R]

Try skyline australia forums. They have a thread with just RB25 dyno graphs.

Oh that'd be awesome!is it skylineaustralia.com? or whats the website address?Thanks

[eh?]

http://www.skylinesaustralia.c...55845

[Kansei240sx]

I actually did that already (remember the part where I said I was debating between two different turbos - how do you think I got to those two?) and while it'll definitely tell you how efficient (which is what a compressor map will tell you - how efficient a turbo is - provided you know the pressure ration and corrected mass flow) the turbo is. It WILL NOT tell you how and where the turbo will spool.I did all the work myself here man ... If I needed compressor maps and **** I'd have asked for them here or went and looked for em myself (actually I did) I'm dumbing it down here I'm only asking for what I need.Which is why I'm looking for dyno graphs... I'd like to see WHERE the .63 hotside A/R will spool in comparison to an .82 A/R hotside.Also I'd like to see what whp levels are seen at what boost levels.

So instead of spouting off at the mouth about compressor maps acting like I don't know what the **** I'm talking about (or trying to act like YOU know what youre talking about) ... How about you shut up or simply show me YOUR dyno graph with a 35R on a RB25 and then tell me the specs of the turbo in specific, unless of course, you don't have one?

Im sorry, when did i call you stupid? I just made a suggestion and then you got all upset. I am not spouting off at the mouth. If you do the right math, and add the right variables, you can make at least a good estimation of where the turbo will begin to spool. You can also calculate how much power you can make where. You cant just get it by looking at the compressor map alone, the engines VE plus the Air in lb/min. It is possible to find the spot on the map that the compressor will operate at the instant your engine is at the given (power & boost) operating parameters, thats what i was trying to tell you.

You dont need to take offense, its the internet man.

[Shocker]

yeah it just got really ugly after 5500's lol. I now know why...

rb25 14 psi 35r t4 hotside .69a/r.......

[Tripz]

Right on.What's the A/R of the turbine side?

.70A/R

[Chaos the Xile]

17PSI, 93 Octane, stock manifold tapped for a TiAL 38mm W/G, .82 A/R, boost was a little shaky...

[RideZX6R]

Im sorry, when did i call you stupid? I just made a suggestion and then you got all upset. I am not spouting off at the mouth. If you do the right math, and add the right variables, you can make at least a good estimation of where the turbo will begin to spool. You can also calculate how much power you can make where. You cant just get it by looking at the compressor map alone, the engines VE plus the Air in lb/min. It is possible to find the spot on the map that the compressor will operate at the instant your engine is at the given (power & boost) operating parameters, thats what i was trying to tell you.

You dont need to take offense, its the internet man.

Sorry sir, I get annoyed when people think post count = knowledge.I read and do a lot more than I post. I liek SEEING dyno graphs because when doing caluclations variables will change things too much (intake mani, cams, exhaust mani, etc) so I like to SEE the results.

I'm also suprised to far everyone is only making 400whp (I know thats a lot but) I was expecting to see higher numbers here and there.I know the 35R can make it and that the RB25 can take it. I've seen and read (read more than seen however) the 35R and RB25 make 500+.Just wondering why everyone seems to be making 400 here ... is it a coincidence?

[Darius]

You have to be a baller to get to the 500+hp level with an RB25 reliably. And most of the guys with the bigger budgets run RB26's anyways.

Why do you want to see dyno sheets so bad anyways? Are you trying to compare them side by side to see how different upgrades compare??

[al_v]

With a good intake manifold , a very good exhaust manifold , a good FMIC , good intercooler piping , some head job , and a very good tune , is easy to get around 500 rwhp with the GT3582. At least this are my plans... so we will see.........

[Darius]

Yep you can get 500 hp on a 35R with all of those until the upper rings or ring lands fail. A really good tune will postpone the inevitable, but yeah you can easily get 500 hp on stock internals with a 35R. Just keep cranking the boost up.

[Kansei240sx]

One of our locals made 507 rwhp

T71Its either a stock or freddy manifoldsafc2AVC-R550cc injectors15psi

Stock block and head gasket. They tuned with the SAFCII and it ran that 15 psi

Within 24 hours of the dyno he got greedy and blew the motor because he upped the boost to 19 psi and melted one of the front pistons.

He also had an RB20DET Making 386 Rwhp on the same mods list, minus the manifold on an IHI RHC6 turbo.

The guy is notorious for having a retarded fast car and then blowing it up just as soon as it's done, that or it lasts a few weeks.

Just janky tuning.

[Darius]

Exactly what the "I blew my RB25 up" thread on skylinesaustralia.com consists of. Half-assed tuning (SAFC), cranking up the boost without tuning, and on 550cc injectors?! I wish I had money to blow things up and not have it be a big deal to build another one.

[s13rb28]

mine will pound the dyno to peak output of my gt35r 600ish....sometime in october. reliably. I can't wait to finally be done. i'll post dyno sheets asap

[RideZX6R]

One of our locals made 507 rwhp

T71Its either a stock or freddy manifoldsafc2AVC-R550cc injectors15psi

Stock block and head gasket. They tuned with the SAFCII and it ran that 15 psi

Within 24 hours of the dyno he got greedy and blew the motor because he upped the boost to 19 psi and melted one of the front pistons.

He also had an RB20DET Making 386 Rwhp on the same mods list, minus the manifold on an IHI RHC6 turbo.

The guy is notorious for having a retarded fast car and then blowing it up just as soon as it's done, that or it lasts a few weeks.

Just janky tuning.

I plan on spending the Cash for a AEM EMS or using GReddy Emanage Ultimate with all the sensors/harnesses for the car. More than likely AEM cuz I've used it before and I like it.No cheap S-AFC BS.I'll likely take it to Evans Tuning (great tuner) for a tune.

I'd like to see 450-475whp on pump ... 500-525whp on race.I think with a good intake mani and such it shouldn't be too hard.Thanks all.

[knightrider4]

i will have some numbers up soon of GT3582 with .82 housing and tubular manifold. I will be using a stock chipped ECU. Yes i have the capability to do so.lol but i will make a thread of the build and progress with dynosheets.

-DaveN.O.S. Street Proformance
Modified by knightrider4 at 12:26 PM 1/11/2008

[RideZX6R]

Can't wait to see it.I'm considering that turbo.What intake manifold you plan on using?

[coreansurfer]

which turbo mani are most people going with?

i've been looking into it, but besides the fullrace one, the others have clearance issues with the steering column.

[RideZX6R]

which turbo mani are most people going with?

i've been looking into it, but besides the fullrace one, the others have clearance issues with the steering column.

wonderful