Garrett G Series

[Butters]

g25 - 660 on dyno.

Not sure i buy everything being said here but at least it will be interesting in vid 2 when they swap the rear housings.

 

 

[Silverhks]

Ok, I did the proper thing and listened to him and those numbers still don't make any sense.

They took a car whose starting point is ~245 tq 230 HP and with an OTS tune is ~280 tq 240 HP on a dynapak. Added a front mount and a g25-660, lost *boost threshold* and torque while adding 40 HP.

My understanding is if the turbine a/r is too small you would get sooner boost response with it choking at the top end.

With thought I still don't understand what happening here. The numbers don't make sense to me especially combined with their comments.

 

BIG edit guys, sorry I should have put more thought into the original post.

Edited August 3, 2019 by Silverhks

[Butters]

Argggg  I could flip the table  !!  They changed the intercooler at the same time as the rear housing. So mudding the results. 

 

 

[Lithium]

5 hours ago, Butters said:

Argggg  I could flip the table  !!  They changed the intercooler at the same time as the rear housing. So mudding the results. 

 

 

Ffs watching it now - pretty sure this runs pump gas? Skyrocketing intake temps suggests that intercooler setup was way out of it's depth, so changing that alone would have justified a separate test... Drives you nuts when this kind of thing is done by someone trying to share data and doing it as an authority.  If it makes significantly more and they conclude that it was because of the housing then a table flip is justified.

[Butters]

Yep, pump gas and big intake temps on last run.

 

Overall seems like a disappointing result for 25psi  but so used to seeing E85 figures these days you forget how much u98 robs you. 

 

[Mick_o]

You can thank EJ for crap result lol. That graph really doesn't look crash hot at all. Does fall on its face quite hard up top still. 

[MookRG]

In this video they did a more direct comparison of the G25 550 to a GTX 3071, without changing other parts at the same time

Ps, sorry if this  has been posted before.

[Lithium]

Doesn't look like the bigger ones are going to be exactly bargain prices 

 

https://www.ebay.com.au/itm/Turbo-Charger-Garrett-G30-900-0-61a-r-62mm-55mm-Reverse-V-Band-V-Band-/323866714212

https://www.ebay.com.au/itm/Turbo-Charger-Garrett-G35-1050-0-61a-r-68mm-62mm-Reverse-V-Band-V-Band-/323866713916

Edited August 18, 2019 by Lithium

[Moelders]

On 18/08/2019 at 5:28 PM, Lithium said:

Doesn't look like the bigger ones are going to be exactly bargain prices 

 

https://www.ebay.com.au/itm/Turbo-Charger-Garrett-G30-900-0-61a-r-62mm-55mm-Reverse-V-Band-V-Band-/323866714212

https://www.ebay.com.au/itm/Turbo-Charger-Garrett-G35-1050-0-61a-r-68mm-62mm-Reverse-V-Band-V-Band-/323866713916

And that's just for the box!

[Komdotkom]

On 18/08/2019 at 5:28 PM, Lithium said:

Doesn't look like the bigger ones are going to be exactly bargain prices 

 

https://www.ebay.com.au/itm/Turbo-Charger-Garrett-G30-900-0-61a-r-62mm-55mm-Reverse-V-Band-V-Band-/323866714212

https://www.ebay.com.au/itm/Turbo-Charger-Garrett-G35-1050-0-61a-r-68mm-62mm-Reverse-V-Band-V-Band-/323866713916

 

Hmm, not on the GCG website and Ebay is showing they are out of stock. I wonder when they'll actually be available. 

Price seems to be about the same as an 8374

[Moelders]

7 hours ago, Komdotkom said:

 

Hmm, not on the GCG website and Ebay is showing they are out of stock. I wonder when they'll actually be available. 

Price seems to be about the same as an 8374

On the eBay links shared by Lith it mentions 'Delivery: Estimated by 20 September' so guessing they will become available around that time, or a day or 2 earlier perhaps.

Maybe?

[Lithium]

On 21/08/2019 at 4:43 PM, Moelders said:

On the eBay links shared by Lith it mentions 'Delivery: Estimated by 20 September' so guessing they will become available around that time, or a day or 2 earlier perhaps.

Maybe?

Looks like the G30s are coming, now....

https://www.garrettmotion.com/racing-and-performance/performance-catalog/turbo/g-series-g30-770/

Edited August 23, 2019 by Lithium

[blah_blah]

Posted on the GCG Facebook:

 

GCG Turbochargers Pty Ltd

57 mins · 

G30-660 AND G30-770 ARE HERE!!!

GCG HAVE OUR VERY FIRST BATCH OF STANDARD ROTATION G30'S IN STOCK!

Please call us on 1300 887 267 to get your very own!

[Stixbnr32]

Now can someone please install one on a built rb26 with tomei pon cams and upload the results asap?

Much appreciated  

Edited August 23, 2019 by Stixbnr32

[Full-Race Geoff]

G30s are indeed coming - G3067 and G3071.  both of these have awesome potential, especially on RB25, 1JZ or the like... however a bit small for RB26 applications.  RB26 may want to wait for the bigger G35

[Snara]

Nice, G30-770 should be able to make same power level like EFR 8374, but with much smaller turbine and compressor wheels. Im waitin'g for dyno's ?

[fatz]

3600 better be as good as a.  8374

[Dose Pipe Sutututu]

On 24/08/2019 at 7:58 AM, fatz said:

3600 better be as good as a.  8374

better, it won't shit out turbine wheels when you overspeed it by 1 rpm.

[Lithium]

Just now, Dose Pipe Sutututu said:

better, it won't shit out turbine wheels when you overspeed it by 1 rpm.

Even though the more data etc I've seen it turns out there is a heap of misinfo on this (I'd been sucked in, too), it seems very much this isn't like that at all.  The overspeed data is all to do with the compressor, nothing to do with the turbine - if people have spat turbines then they have REALLY overdone it, probably due to some other issue.  Some cases I've seen have even turned out to be to do with oil starvation f**king the core and everything else being punished for it.

I love the idea of the new G-series range but the fact that there are hopes that they will compete with the OG EFR range, and now there is a new series of EFRs which have really stepped it up there are some G-series which could possibly prove to be too little - too late.    Look forward to seeing how they perform though as there are some really interesting units in the range, if they aren't a lot laggier than their wheel sizes would have you expect then they could mix things up a fair bit.

[Phat_Toni]

There seems to be limited information so far but it looks like the exhaust inlet/outlet location between g25 and g30 look to be identical, making at least the rear section of the turbo able to be swapped without modification to the exhaust. This should put the core in the same location too.

Very interested to see how the G30 based turbos compare to the GT30 based turbos in terms of response. Im expecting response somewhere between GT30 and GT35 in comparable housing sizes...time will tell