Jump to content
SAU Community

Recommended Posts

That sounds like a normal GT3076 that kind of power, keen to see the dyno sheet to see how much laggier it is compared to a GT3076

They stopped intentionaly as I don't have internals. They can see this doing close to 350. No worries.

Will post the sheet when I have it.

100rwkw at 3900rpm is pretty late making power.

Do you have a plot of boost as well? It seems to be in quite late which makes me wonder if there is some improvements to be had with better boost control.

I will get that chart. Definately. I'm using a gizzmo IBC. U recon a better one will bring.power on sooner.

thats worse than my 3076r. mine makes 270@16psi on a mainline for reference internally gated

Don't look at power every dyno is different. Shape of chart is more important. So its laggier than gt3076?

.63 or .82 rear? internally gated or external?

it 'looks' a touch laggy. how does it drive?

.82

Drives very smooth. Have to admit. I wouldn't mind removing a big of lag. Just a bit. However im coming from stock turbo maybe om not that used to it. Wat things can reduce lag? Once it up and boogies it pulls like a freight train though. Lol

Really? Wasnt their goal to bring boost on earlier with the gtx?

Compare the flow maps, they flow more in the higher boost levels mainly, but also tend to be more comparable with a slightly bigger version of the same turbo. Read all of this thread, lots of pretty graphs to look at.

What made you think that?

Edited by Rolls

4800rpm for 200rwkw, ugh... Much lagging compared to a 3076

But its similar to a GTand that's pretty much where a GTX3076 sits for comparo.

unfortunately it seems Garretts GTX3x frame isn't living upto the claims

Compare the flow maps, they flow more in the higher boost levels mainly, but also tend to be more comparable with a slightly bigger version of the same turbo. Read all of this thread, lots of pretty graphs to look at.

What made you think that?

Ah ok. Have read all of the thread will be looking at getting a 3076 soon.

Dont know how I got that idea, mabey just saw the new model and presumed it would be better haha.

i would be interested to see a plot of a GT3040 (GT3082R) Vs' a GTX3076R as i think they will be pretty similar.

Really? Wasnt their goal to bring boost on earlier with the gtx?

Personally i think that that GTX range was an attempt to gain back a bit of the market share that they were beginning to lose to other performance turbo brands like Precision and Borg Warner. They seem to have been caught napping a bit and while the others were designing completely new turbos Garrett were relying on their now old GT range and didn't seem to be working on anything new.

That is also the reason why i think that the wheels are billet as the time from design to production is a lot less with a billet part than cast, and it also means that they can easily tweek the design without the expense of re tooling.

The GTX range at the end of the day is nothing more than an updated compressor, it's not a completely new turbo just a touch up on the old design.

Edited by D_Stirls

I do remember the first releases on the GTX implied they would be at least as responsive as the GT, but I have been suspicious of that claim from the start... however this result looks too laggy. I suspect something isn't right somewhere, probably a leak of some sort more than boost control.

For what its worth, the GTX3076R would really be a GTX3077R if Garrett stuck to their normal naming conventions.

I do remember the first releases on the GTX implied they would be at least as responsive as the GT, but I have been suspicious of that claim from the start... however this result looks too laggy. I suspect something isn't right somewhere, probably a leak of some sort more than boost control.

For what its worth, the GTX3076R would really be a GTX3077R if Garrett stuck to their normal naming conventions.

Anyone else actually got one of these? So I can compare how abnormally lsggy might e is. Ugh.

i would be interested to see a plot of a GT3040 (GT3082R) Vs' a GTX3076R as i think they will be pretty similar.

Someone previously posted on here (I think it was Ozz) on an SR20 they were virtually identical - you'd be forgiven thinking they were the same turbo on different dyno runs.

Found it on another forum - scroll down to post 37.

http://www.silviawa.com/forums/index.php?showtopic=58974&st=20

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • Yeah I suspect even if you hold airmass per cycle/cylinder constant if you get too far away from stock you're still going to have problems running the factory tune within the bounds of the factory load scale. Cams, different displacement/rod ratio, etc. I'm just lucky that the GTIII-SS with wastegate boost + CA compliance cats is pretty much equivalent to stock turbos. When I have actual space I can finally get it tuned and modify the fuel system for flex fuel to 100% handle any detonation concerns when cranking the boost to whatever those dinky turbos can put out.
    • I would say no, why, because my daughter, who also lives in Goulburn, hasn't recommended us going there Pity, as we miss all the German joints around in Sydney, actually, the restaurants are the only thing I really miss about Sydney, and a special mention to Ishibanboshi at Bondi Junction, their Kara-age Don is heart cloggingly deliciousness (always added a special boiled egg...or 2) 😋 
    • Does that German restaurant still exist in the old place out the NW end of Goulburn? When I say "out the NW end of"...I am really being vague. It was 1997 when I was last there, and the only point of reference I can recall is that it was on the opposite side of the main drag from the big merino. And when I say "opposite side of the main drag", I don't mean "on the main drag". It was either a couple of streets back from there, or might have even been out in the sticks a bit further. Was an old farm building or mill or somesuch. And when I say "the big merino" I might actually be thinking of a completely different part of town, because I just looked on maps and the big bugger is not where I remembered him to be! The food was good, consisting largely of various German mystery-meat sausage/loaf things and kartofflen.
    • So while the second sentence is completely correct and the whole point of the conversation, the first sentence bears consideration. If this bloke is just hoping to throw big turbos on and drive it around, because there are no helpful facilities at all in his tropical paradise** then he likely has zero chance of even knowing what the TP is on the last column in the stock maps, let alone know whether the ECU is operating anywhere near it or past it. So the point is very very moot. And, per what I said before, at stock boost on those turbos, you may well be off the end of the map. **I'm just back from Vanuatu, so I know exactly what small Pacific nations can be like wrt paradise without requisite facilities. But it's not even that simple. I put a high flow on my car and had to drive it around without a proper tune because of the lack of opportunity*** to put the bigger AFM and injectors into it to allow it to be tuned. I had to turn the boost down to less than I had before, and back off the boost controller's ramp, because it was exploring parts of the map that it didn't drive in before, and really couldn't access for tuning on the dyno either, and so was pinging. It was still well within the last column, because when I first**** set up the Nistune on the Neo I rescaled all axes of the maps to give some more space to explore. ***Family dyno was broken ****This was 13 years ago, and the TIM thing wasn't a thing then and so TP would definitely grow when pushing past the stock tune's limits.
    • Yep, this bit another local owner. I caught it before putting the transmission back into the car, what I noticed was the pressure plate fingers weren't flat and even. It's more obvious with the pull style clutch because the throwout bearing ring was visibly not flat once everything is put together. Nismo should really update their instructions to call out this specific detail. I'm not even sure the clutch as-shipped orients everything properly.
×
×
  • Create New...