Jump to content
SAU Community

Garrett Medium Frame Gtx Turbos

SimonR32

By SimonR32,
in Engines & Forced Induction

 Share

Recommended Posts

  • Replies 1.5k
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

whatsisname
whatsisname

Polished up pretty good if I do say so myself [emoji4]

FineLine
FineLine

Who gives a toss how it looks if it meets the performace criteria. I hope they wax garretts arse to the point where garrett actually starts doing some real r&d and giving customers something bette

whatsisname
whatsisname

The GTX3584RS will support roughly 850-880HP on a 3.0L (maximum rpm of ~7500-8000) at a PR of about 3.1-3.3 No chance of getting 1000HP out of it, not unless it can be done at a PR of 2.75 and even th

Posted Images

juggernaut1 Proficient

juggernaut1

Posted
Posted (edited)

i think the gtx would really benefit from more boost in that example, they're compressor map does suggest the biggest difference is at high boost levels

Problem is the turbine and exhaust housing are likely to be choking the compressors true potential - basically its a GT35 flowing compressor being turned (and choked) by a GT30 turbine.

E85 and/or larger ex housing would be the answer IMO.

Now I wonder what the GTX35 would be like in my turbo falcon with 1.06 ex hsg.:mellow:

Edited by juggernaut1
Link to comment
Share on other sites
Lithium Grand Master

Lithium

Posted
Posted

which comes back to the possibility of a gtx3576 being a good thing if you can afford to make one.

How?? The turbo builds boost slower than one with the 82mm GT series compressor.

Link to comment
Share on other sites
ShiftyTys Rising Star

ShiftyTys

Posted
Posted

gtx3076r with the skyline .73 AR exhaust housing (avoturbo.com) might be very interesting.....

currently using this housing with gt3076r bb core, lag in awd auto stagea until just over 2000rpm then it takes off! easy 250awkw with 450cc S15 injectors

better than stock automatic torque converter would change this again tho....

throw in 550cc injectors and the gtx3076r turbo and there's an easy 300awkw on pump gas with remap

Getting that setup installed at Avo on my 33gtst in next couple weeks :)

Link to comment
Share on other sites
WIHAGTR Community Regular

WIHAGTR

Posted
Posted

Okay... I'm chasing around 300kw... no more since it's a standard rb25... a 3076 would EASILY get that but it would be capable of more and will have more lag than a 3071... so I'm going with the 3071.

But I'm torn between housing types... .62 or .82...

Also to add: I'm running vapor gas injection so I get around 20kw more than petrol.

With .82 I'll have more power but more lag, however would that power be too much more for my engine to progressively handle? Would it exceed 300?

With .62 can I expect 280-300kw? If that's the case then It would be fast spool and thus best choice for a standard rb25?

Since it's going to be larger than the gt version, wouldn't a .62 mean more heat and thus mean less boost to avoid issues?

Link to comment
Share on other sites
NYTSKY Grand Master

NYTSKY

Posted
Posted

i think the gtx would really benefit from more boost in that example, they're compressor map does suggest the biggest difference is at high boost levels

If someone wants to buy the front/cartridge of my GT35 ill get a GTX35 to test :)

Link to comment
Share on other sites
scotty nm35 Grand Master

scotty nm35

Posted
Posted

Okay... I'm chasing around 300kw... no more since it's a standard rb25... a 3076 would EASILY get that but it would be capable of more and will have more lag than a 3071... so I'm going with the 3071.

But I'm torn between housing types... .62 or .82...

Also to add: I'm running vapor gas injection so I get around 20kw more than petrol.

With .82 I'll have more power but more lag, however would that power be too much more for my engine to progressively handle? Would it exceed 300?

With .62 can I expect 280-300kw? If that's the case then It would be fast spool and thus best choice for a standard rb25?

Since it's going to be larger than the gt version, wouldn't a .62 mean more heat and thus mean less boost to avoid issues?

Where do you want the efficiency to lie? I prefer midrange so a smaller housing suits me, those chasing top end will go for the .82 or 1ar housings.

As you have a cold gas cooling the charge you may not notice a bit of extra heat...

Link to comment
Share on other sites
Rolls Grand Master

Rolls

Posted
Posted
With .62 can I expect 280-300kw? If that's the case then It would be fast spool and thus best choice for a standard rb25?

Since it's going to be larger than the gt version, wouldn't a .62 mean more heat and thus mean less boost to avoid issues?

If you want to lean on it more the smaller rear housing should make up to 300kw on decent boost.

Personally I think you should always go the smallest housing/turbo that will make your power goals and be close to maxing it out, you'll get slightly more intake heat but response is key for a street car.

Link to comment
Share on other sites
skylinecouple Experienced

skylinecouple

Posted
Posted (edited)

Okay... I'm chasing around 300kw... no more since it's a standard rb25... a 3076 would EASILY get that but it would be capable of more and will have more lag than a 3071... so I'm going with the 3071.

But I'm torn between housing types... .62 or .82...

Also to add: I'm running vapor gas injection so I get around 20kw more than petrol.

With .82 I'll have more power but more lag, however would that power be too much more for my engine to progressively handle? Would it exceed 300?

With .62 can I expect 280-300kw? If that's the case then It would be fast spool and thus best choice for a standard rb25?

Since it's going to be larger than the gt version, wouldn't a .62 mean more heat and thus mean less boost to avoid issues?

Do not go with the .63, I have the 3071 with .82 and trust me, there IS no lag. If you go with the smaller housing it will simply come on boost too early and wheel spin. Most of the guys with 3076 & .82 are very happy with the way they perform as far as response is concerned. So why go with an exhaust housing that will choke the power and cause turbine and therefore exhaust heat. The result from this is detonation so you will have to remove timing which will reduce power anyway. The 3071 is the best compromise for no lag/good power. Personally, go with the 3076/.82 and know there is some headroom for more power but if boost is kept low so will inlet temperatures.

I think cams will be needed to hit 300rwks with a 3071/.82 regardless of the latest technology.

Edited by skylinecouple
Link to comment
Share on other sites
WIHAGTR Community Regular

WIHAGTR

Posted
Posted

Hm so far from people I know and I net hunting it appears .82 is the go. 3076 I would rather avoid since a gt makes 280kw on rb25, you'd assume the gtx would be near 300, meaning 320 kw for me since I'm on gas. the gt 3071 can't take more than 260 so assume the gtx version might push 280 which means 300 for my gas. so 3071 is the choice but housing is still the issue. .82 looks like the option that has the least hesitation and in reality it's a few nanoseconds of time I best not need to worry about.

I think I've made my choice, 3071 with .82

thanks guys! love these forums! like consulting with one massive car nerd :)

Link to comment
Share on other sites
ShiftyTys Rising Star

ShiftyTys

Posted
Posted

Do not go with the .63, I have the 3071 with .82 and trust me, there IS no lag. If you go with the smaller housing it will simply come on boost too early and wheel spin. Most of the guys with 3076 & .82 are very happy with the way they perform as far as response is concerned. So why go with an exhaust housing that will choke the power and cause turbine and therefore exhaust heat. The result from this is detonation so you will have to remove timing which will reduce power anyway. The 3071 is the best compromise for no lag/good power. Personally, go with the 3076/.82 and know there is some headroom for more power but if boost is kept low so will inlet temperatures.

I think cams will be needed to hit 300rwks with a 3071/.82 regardless of the latest technology.

So wouldn't something like a gtx3076.73 be ideal?

Thoughts anyone?

Link to comment
Share on other sites

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
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • GTSBoy
      Calling all audiophiles

      By GTSBoy · Posted

      Nah, yeah, nah. Speakers have a nominal impedance of 8 ohm that looks more like 6.4 ohm when measured. The receiver's amplifiers (all channels) are all rated to 6 ohm (I think, it's been a long time since I cared). The real problem is that many modern class D amps have aggressive protection circuitry that cuts off the fun if they think too much current is being drawn. And with my speakers having series crossovers, as opposed to more typical parallel crossovers, and big TL enclosures, they can certainly dip down to lower impedances at some frequencies and that easily triggers the protection. Pioneer receivers are somewhat famous for it, but even Denon, Onkyo, et al, all have many complaints against them across various models. It only does it when listening to music at high levels. You have to be putting your ears at risk to do it. But sometimes I want to do that. If I was serious about using it as a listening room I'd simply upgrade the amp for the front pair to a nice Rotel or something, and just use the receiver for signal handling and processing - although that would be a bit of a pain in the arse too. Have to switch on more shit, pre-amp volume vs main amp volume, etc etc.
    • defari
      Destiny 2

      By defari · Posted

      yeah pretty much, stopped playing after lightfall, couldnt be bothered with the final shape...  ran that game into the ground for years... bit of a shame.. the  story was awesome. was playing a lot of trials but the hackers became tooo much, ruined the game.  
    • araiko
      EC/EEC FMVSS safety standards cars?

      By araiko · Posted

      This is why you don't get invited to press events.         Kodi
    • araiko
      How long does it to enter a car on the Register of Approval Vehicles (RAV)?

      By araiko · Posted

      For example, you’ll need this approval if: you’re a car enthusiast looking to import a specialist vehicle or an older car you want to bring your vehicle with you when you move to Australia you manufacture or import special purpose vehicles or a small number of trailers each year.       Tutuapp 9Apps
    • Duncan
      Thinking of getting a Q50 300hp and just tuning it instead of getting the Q50 Red or 400R

      By Duncan · Posted

      I reckon you are 100% right on the money. The only reason I bought Red Sport instead of the base VR30 is that I am investigating racing it in Production Cars, and they require you to run a (mostly) standard car....therefore knowing exactly what was in the RS spec was important to me and I paid the extra. Other than that, for sure I would have pocketed the $10k and spent them on mods instead. Plus the non-RS models are more likely to have had a nicer life prior. Just a warning though, mods always cost twice as much as they look like they will on paper BTW you should also consider the 400R imports, they are about the same price as a local RS but 5+ years newer. Of course that comes with the usual warnings about finding parts, unhelpful nissan dealers and finding insurance
×
×
  • Create New...