57trim to GT30R

[eclipse98gs-t]

Hi guys
What do you think about this "upgrade"?
Is this worth?
My car is making 12.1 sec @ 20psi on 57trim
Can i expect some improvement swap to GT30R?
Mods are on my profile.
Thanks for comments

 

[v2ner]

Isn't a 30R a 56-trim?

 

[shleppy]

What are you trying to accomplish with this upgrade and which version of the gt30 are you thinking about?

 

[eclipse98gs-t]

hi

(from forcedperformance.net)

GT3076R Ballistic Concepts Turbocharger. This is also called GT3037R turbocharger. It has a 52lb/min compressor with a 4" inlet surge ported compressor cover. It has a T31 4bolt outlet turbine housing that is .82 A/R

Hope this helps

Thx

BTW last turbo was:

Garrett Compressor Wheel Specs:
Wheel Trim: 57
Wheel Diameter: 56mm
Wheel Inducer: 2.230"
Wheel Exducer: 2.950"

Garrett Turbine Wheel Specs:
Wheel Trim: 69
Wheel Style: T31
Wheel Inducer: 2.559"
Wheel Exducer: 2.121"

 

[Turbocharged]

The trim of a turbo has nothing to do with size, it has to do with this ratio:

trim = [(exducer diameter) / (Inducer diameter)]^2 x 100

They can both be 57 trims but can have different sized compressors and turbines.

Compare the gt30r compressor map to that of a T04E 57 trim (assuming you have a T04E cover):
http://www.pagparts.com/Garrett_Turbochargers.asp?spec=turbospec&type=gt30r

As you can see, the GT30r is more efficient over a wider range of pressure ratios and flow rates. You "could" expect to get a compressor that pushes ~10 lb/min more than the turbo you have now. This could potentially unlease 90 hp, depending on your setup and how much boost you want to run.

Are you maxing out your current turbo?

For the post above: The T31 turbine is not all that great IMO. I have a 50 trim with a T31 and am looking for an upgrade as well.

 

[eclipse98gs-t]

Thx fot input
My car are running very well.
I was lookin for some upgrade, and i choose GT30R, because ive heard many good things about it.
Like spool up, top end, etc
But, i ask you guys because you have a lot more experienced than me and turbo price is about a grand and i dont want to make a mistake.
My car is running 12.1 sec in 1/4 mile, i hope go to 11s with this new turbo (GT30R).
Could that be posible?
Thx again for your help

 

[Turbocharged]

What 57 trim do you have?

The GT30R likes more boost than the 20 psi you were running.

 

[TSIMonsteR]

Why not just step it up to the GT35R ? It can't cost much more, and the gains would be more felt. I just don't see myself dropping a grand for a little better spool

 

[94awdcoupe]

why not just turn the boost up on the 57trim? would make another 70-80whp at 29psi.

 

[Turbocharged]

why not just turn the boost up on the 57trim? would make another 70-80whp at 29psi.

I agree, you should be able to hit 11's if you are running 12.1 at 20 psi. We really need to know more about what turbo you currently have before we can draw conclusions. Also, what GT30R are you looking at (A/R, turbine, ect.)?

 

[TSIMonsteR]

why not just turn the boost up on the 57trim? would make another 70-80whp at 29psi.

makes sense, he obviosly has the supporting mods for it

 

[eclipse98gs-t]

QUOTE
(What 57 trim do you have? )

This is exact turbo what i have:
http://majesticturbo.com/30377.html

QUOTE
(Why not just step it up to the GT35R ? It can't cost much more, and the gains would be more felt. I just don't see myself dropping a grand for a little better spool)

Because a frinend of mine has a Skyline and he is upgrading to a GT35R and is selling to me GT30R. GT30 in Peru cost as much as 2 grands because customs rigths and taxes are expensive. And my friend is selling to me at 1 grand. I bougth it inmediatly.

QUOTE
(why not just turn the boost up on the 57trim? would make another 70-80whp at 29psi)

This is an good option too, i was thinkin the same thing until GT30R came to me. Maybe i turn up boost on 57trim at 29psi to see what happen first.

QUOTE
(Also, what GT30R are you looking at (A/R, turbine, ect.)?)Ç

It has a 52lb/min compressor with a 4" inlet surge ported compressor cover. It has a T31 4bolt outlet turbine housing that is .82 A/R. External gate setup.

Hope it helps

DSM POWER PERU

 

[shleppy]

the gt3076r is more efficient than the basic 57 trim. It should spool a little faster and be more pump gas friendly at high boost. Do you need it for 11's-no. Just turn up the boost on your current turbo and tune it and you'll get your time.

 

[eclipse98gs-t]

Im running 650s injectors for now.
I was thinkin about to get rid off it and get some 850s.
What do you think?
Thats why im not turn up boost to 29 psi.
BTW 650s are large enough to GT30R turbo? Ive heard 25psi maximum, is this rigth?
Thx again folks, your help is very important to make my car faster.

DSM POWER PERU

 

[shleppy]

850's would be a good idea for either turbo if your going to turn up the boost. What tuning devise are you using?

 

[eclipse98gs-t]

850's would be a good idea for either turbo if your going to turn up the boost. What tuning devise are you using?

Tuning devise is a Haltech E6X.
Im very pleased with this EMS.

I have a doubt, my ignition system is stock, except for BPR7ES and accel wires, stock coils.
Should i upgrade coils? Maybe a coil on plug system?
Should i upgrade pugs to BPR8ES? Maybe upgrade wires too?
What dou you think about MSD DIS-2?

Thx for advice

DSM POWER PERU

 

[shleppy]

Unless you run into a issue your ignition system should be fine for the power level your at. I'm just running the 7es plugs and magnacore wires and have no ignition worries at all.

 

[Turbocharged]

The stock coils have gone into the 10's plenty of times. Just make sure you have some nice plugs and wires. If you are going to boost over 25 psi, you will most likely need race fuel.

 

[zross1]

Yes it will be woth the swap. You'll have a way more effecient pump gas turbo that will flow around 5 lb/min more then the 57 trim, spool much quicker and have quicker transient response. On top of that you'll have way more top end because you'll have a Garrett .82 turbine housing which is a good match for that turbo. On my gt35r I see 25 psi at 5K with that exact same exhaust housing. It's a great exhaust housing and people have made a lot of power with it. My first time out at the track I trapped at 117 on pump and missed 3rd gear and had a 2.1 60' at 4500 ft elevation. And no 25 psi isn't the max amount of boost you can push with this turbo. Look at a compressor map, you'll see that you can push 30+ psi. But like many have said you could do this with your 57 trim too. My buddy ran 12.00 with a stock sidemount @117 with his 57 trim at 4500 ft elevation on I think 28 psi. Of course if it's full garrett with T31 turbine housing your going to have to run a t3 manifold and fab your own O2 housing to work with your downpipe. That's the part where you need to ask is it worth it.

 

[eclipse98gs-t]

Of course if it's full garrett with T31 turbine housing your going to have to run a t3 manifold and fab your own O2 housing to work with your downpipe. That's the part where you need to ask is it worth it.

Well, i already running T3 manifold and made custom O2 housing so i think everything will be fine.

Thanks for your help

DSM POWER PERU

 

[JOEY A]

My freind has a 57trim with a stage 3 wheel from turbonectics he will sell to me for really cheap since were good friends.


It came off a GSR teg that ran 11.9 with it, I love my EVO and im thinking about switching to that turbo//

Sorry to high jack the thread but is it wise to make the switch? I planned on using a GT35R next year anyways.......


Sorry if im stepping on toes..