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Re: Garrett G Series Turbo - Competitor to the Borg-Warner EFR series or no?
Originally Posted by TheShodan
I gotcha..Basically the same math as before, just finally adding the variables they should have from previous years. It's about time.
I'll put this link as part of the FAQ "stickies" highlighted in grey. It's school good info... (for those who truly don't tl;Dr)
Thanks! Followup article with more information about the efficiency and performance characteristics of the GTX Gen2 line... and for those that want input directly from Garrett, this is written by a former Garrett engineer. Same as the previous article I linked. Honestly, you guys should follow what he writes on MotoIQ,
Here's another link where he gets into a fairly detailed discussion on the efficiency on the Gen2 GTX on EvoM- good reading on VQ and Evo blocks for reference.
Re: Garrett G Series Turbo - Competitor to the Borg-Warner EFR series or no?
Im still trying to find a clue on when/what turbo will be released next on the G series.
I really really like the new G30 to come soon. I bet the 30 series turbine wheel will hit like 80% efficiency.
Re: Garrett G Series Turbo - Competitor to the Borg-Warner EFR series or no?
Originally Posted by Balor_Gr
Im still trying to find a clue on when/what turbo will be released next on the G series.
I really really like the new G30 to come soon. I bet the 30 series turbine wheel will hit like 80% efficiency.
From what Garrett is telling me, they're changing the profile of that turbine wheel from the N111 60 mm.
Re: Garrett G Series Turbo - Competitor to the Borg-Warner EFR series or no?
Im very interested in the G25-550 if it really does put out 550. I find that hard to believe though unless they're talking crank power and not wheel which is probably the case. I wonder how this turbo would compare to the stc hunter.
Re: Garrett G Series Turbo - Competitor to the Borg-Warner EFR series or no?
Originally Posted by H22Honda98
Im very interested in the G25-550 if it really does put out 550. I find that hard to believe though unless they're talking crank power and not wheel which is probably the case. I wonder how this turbo would compare to the stc hunter.
They are talking about crank HP, not WHP. The brochure says that on the product description/profile.
Even taking crank HP readings into account, I still see the G25-550 maxing out at about 420WHP at most without going completely outside the efficiency range. Right around 400WHP would probably be the sweet spot for the turbo.
Re: Garrett G Series Turbo - Competitor to the Borg-Warner EFR series or no?
Originally Posted by Balor_Gr
So it will be a G series design - GT30 series size or something like that?
Any clue when it will possibly be launched?
If history serves, they reintroduce newer materials like that about 2 years from introduction of an original. Garrett takes its sweet time to introduce major components like that, so don't hold your breath
Re: Garrett G Series Turbo - Competitor to the Borg-Warner EFR series or no?
Yeah i was agraid about that but we allready know that efr turine wheel is super light but low % efficiency bacause they could not form the whell very well due to the material.
MarM turbine wheel is wicked material. I really want a G30 series reverse rotation for a longer/straighter lovefab minieq style mani. I guess ill wait.
Re: Garrett G Series Turbo - Competitor to the Borg-Warner EFR series or no?
DATA UPDATE:
RENAULT 2.0L with .72 A/R HOUSING 1.5 BAR ~ 22PSI
600 rpm sooner from the GTX3071 is my problem bevause we dont know GX3071 housing used...If it was .63 its cool. If it was .82 well its not that impressive.
Re: Garrett G Series Turbo - Competitor to the Borg-Warner EFR series or no?
Your MS Paint skills continue to prove valuable Balor
Interesting graph, but as you said without knowing the A/R housing used for the 3071 it's hard to gauge how impressive this is. I'd really like to see the spool when compared to:
I'm starting to think peak numbers may only be a modest increase over the 2867 (note to others that the above graph was measured in flywheel horse power, not WHP). Again, I really want to see the spool differences. I still find the compact physical size and the increased compressor efficiency appealing on the G series, but that alone won't make it worth an extra $500 over the GTX series.
Re: Garrett G Series Turbo - Competitor to the Borg-Warner EFR series or no?
Imo it depends on how desperately you need spool.
On a AWD that you cant spin / spool its needed.
I can find the G25-660 .92 a/r reverse rotaion(for straight shooting short manifold) around 1500 euros.
GTX3071 g2 is like 1250 euros so nothing too expensive at least here.
And that wasnt MS paint haha. It was snipping tool i yse a lot tobsave usefull stuff on a folder.Its very quick
Re: Garrett G Series Turbo - Competitor to the Borg-Warner EFR series or no?
Update on the graph Balor posted above from RS Tuning Limited - They responded and said that the A/R housing they used for the 3071 was the .61 vband housing. If that's true, then this is pretty amazing.
Re: Garrett G Series Turbo - Competitor to the Borg-Warner EFR series or no?
Originally Posted by Chance EG
Update on the graph Balor posted above from RS Tuning Limited - They responded and said that the A/R housing they used for the 3071 was the .61 vband housing. If that's true, then this is pretty amazing.
It was the .61 divided v-band.. It's impressive, but not surprising...
You really gotta hang out with us turbo gurus more. You're impressed much too easily
Re: Garrett G Series Turbo - Competitor to the Borg-Warner EFR series or no?
The hunt for data continues.
1) SUBARU 2.5 liter G25-660 .72 a/r. Somehow this setup is not that impressive spool wise. The same car had full boost by 5100 on GTX3071 .63 so its probably the turbo kit / dyno that fuarks spool.
I made a boost x lbs compressor map plot.
Also the best comparison so far again from a ej205 on g25-660 a/r: .92 VS gtx3076 a/r : .64 !
VERY good results.:
Re: Garrett G Series Turbo - Competitor to the Borg-Warner EFR series or no?
Originally Posted by Balor_Gr
The hunt for data continues.
1) SUBARU 2.5 liter G25-660 .72 a/r. Somehow this setup is not that impressive spool wise. The same car had full boost by 5100 on GTX3071 .63 so its probably the turbo kit / dyno that fuarks spool.
I made a boost x lbs compressor map plot.
Also the best comparison so far again from a ej205 on g25-660 a/r: .92 VS gtx3076 a/r : .64 !
VERY good results.:
Id say G25-660 is very close to GTX3071 .
you're assuming a lot here. No one is looking at turbine wheel profile, and it's not really partying where timing is for this.
I never did trust NASIOC for any real information...
I might see if I can get my hands on one in August and put it on a good VE platform after some measurements, and see what all the hub-bub is..
Re: Garrett G Series Turbo - Competitor to the Borg-Warner EFR series or no?
Any idea on the wheel sizes of the G42 ? It still bugs me how Garrett overstates their horsepower rating versus the actual compressor flow. Looking at the '1200' the map just touches ~112 lb min which is good for a ~72mm wheel assuming it stayed 72mm. At a Pressure ratio of >3 it fall to 110 lb/min and lower.
The '1450' is more like a 1350 but it does have a broad >120 lb/min flow range (basically between 2.1 and 4.0 PR) which should produce a nice flat torque curve. I think the 2JZ & RB30 guys should have fun with the 1450.
I'm still impressed how well the now old Holset stuff holds up in terms of flow. The Holset 76mm cast wheel flows 110 lb/min and the 80mm MFS wheel 130 lb/min which was pretty much on par with the GTX size equivalents.
Re: Garrett G Series Turbo - Competitor to the Borg-Warner EFR series or no?
Originally Posted by extremeracer
Any idea on the wheel sizes of the G42 ? It still bugs me how Garrett overstates their horsepower rating versus the actual compressor flow. Looking at the '1200' the map just touches ~112 lb min which is good for a ~72mm wheel assuming it stayed 72mm. At a Pressure ratio of >3 it fall to 110 lb/min and lower.
I agree. At least they always post the compressor maps right there on the product display/page so it's easy to see what you're actually dealing with. Turbine maps are sometimes available too if you search around, not for the newer models yet though.
They've been exaggerating their numbers since the original GTX series; even if you consider their numbers in terms of crank HP there's still no way.
Precision has been dominating the large-frame turbo market for quite a long time now, at least in the pro drag world. It would be interesting to see some of the 2JZ/RB/LS crowd use some of these newer big boys.
Re: Garrett G Series Turbo - Competitor to the Borg-Warner EFR series or no?
Originally Posted by Chance EG
I agree. At least they always post the compressor maps right there on the product display/page so it's easy to see what you're actually dealing with. Turbine maps are sometimes available too if you search around, not for the newer models yet though.
They've been exaggerating their numbers since the original GTX series; even if you consider their numbers in terms of crank HP there's still no way.
Precision has been dominating the large-frame turbo market for quite a long time now, at least in the pro drag world. It would be interesting to see some of the 2JZ/RB/LS crowd use some of these newer big boys.
Agreed, except the GTX55 which has been doing quite well in that 'league'.
Re: Garrett G Series Turbo - Competitor to the Borg-Warner EFR series or no?
I would like to know more about any similarities that exist between the 60mm NS111 turbine and the new G30 turbine .
Mr Shodan I have seen you mention the 60mm NS111 which Garrett never used in their aftermarket turbos .
We were stuck with the GT30 UHP turbine for far too long .
Thanks in advance , cheers from Adrian .
Re: Garrett G Series Turbo - Competitor to the Borg-Warner EFR series or no?
Originally Posted by discopotato03
I would like to know more about any similarities that exist between the 60mm NS111 turbine and the new G30 turbine .
Mr Shodan I have seen you mention the 60mm NS111 which Garrett never used in their aftermarket turbos .
We were stuck with the GT30 UHP turbine for far too long .
Thanks in advance , cheers from Adrian .
05-06-2018, 10:03 AM
Re: Garrett G Series Turbo - Competitor to the Borg-Warner EFR series or no?
