Lithium

Depends on how harsh the dyno is etc, the compressor flow is there for well >1000hp @ crank on E85 but the question with the EFR range has often been if the exhaust side is up to it given people already run into EMAP issues with the EFR9180.. granted it's hard to know how much that's just due to people running out of compressor on them

It's the same trim as the conventional GT30 turbine, I said in my first post about the G series turbos that the 30 and 35 are the same size

No expert on this side of things but I'll point out some things which may or may be naive points: - High speeds required to push that air mass: They don't spin any faster than any other previous Garretts of the same kind of wheel size. The G3076 spins at similar turbine rpm to flow ~80lb/min as the GT3076R would to push 53lb/min. Just out of entertainment's sake, I checked it out and the G3076 can manage the GT3076R's max rated flow (at it's 145,000rpm compressor speed limit) at as low as ~70,000rpm in the right situation - I am pretty sure that since the GTX series they've used metal bearing cages and dual ceramic ball bearing cores - Non-serviceble cores - Is this any different to any of the other major name ball bearing core manufacturers?

It'd be unreal if their response stayed "comparable" for size with most other turbos as well, the G30-770 (which would be G7160 in Borg Warner naming) is pretty much the equivalent of EFR8374 flow in an EFR7163 size which would be INSANE if it spooled like an EFR7163, though while there still aren't lots of results out there it seems like the G25-660 is probably laggier than the larger EFR7163 - so it'd be a safe bet that the G30-770 is going to be significantly laggier than what you'd normally expect for the wheel sizes. They are still WAY smaller than other turbos which flow similar so I kind of hold hope that it will make up some ground there.

Cheers again for this, in my excitement I forgot to update the list... which is now looking quite healthy. It fit quite nicely in the placeholder I had set aside for it

I've had a quick play with that data, and if I am looking at it right - the 1.01a/r G30 hotside is very comparable to the 1.05a/r EFR8374 hotside which puts things into perspective. The .83a/r G30 hotside falls slightly short of the .82a/r GT35 hotside in flow. I think Garrett have chosen some very nice spread of options with this range.

Understood, and very much appreciated - thanks for sharing - that's awesome. I'm pretty confident they are legit, btw. Just probably weren't meant to be released yet

Much appreciated, sir - maybe throw it in the Garrett G-series thread if that's ok

To yoink from another thread, the compressor map for the G30-770. This is the one from the range I have been REALLY looking forward to, at a glance the compressor flow is sufficient to compete with the likes of an EFR8374 but from a turbo whose wheel sizes are probably closest to the likes of an EFR7163. This thing on a typical street/track spec RB could prove to be absolutely awesome. ]

Well played - any chance of the turbine maps?

Legend! Where did you get that, if you don't mind me asking - feel free to PM. I just want to be sure it's definitely the right map for the right turbo before I nail it down. Also, looks like I estimated it's place in the list perfectly haha

Sigh.

flamin mongrel. But you're right, I probably should have thought of that at the start

I keep getting asked to update this list with old and new turbos, so I've added some ones "based off request" and also added some current or future units I have some data on. The G30-770 I have not seen a compressor map for so just made an educated guess as to where it will sit:

Agreed, the 1.05 can work ok on EFR8374s depending on the setup but I wouldn't use it on an EFR8474 on a 2.8 with a good head. It sounds like a good combo from all I can tell. Looking forward to seeing how it comes out

That that size cams, engine and compressor you obviously want to party - so that turbine housing will be well justified I suspect What kind of power and power delivery were you looking for? Fwiw I've been in a GTR running an RB28 with a 1.45 EFR8374 and it was surprisingly punchy, the 280deg cams will probably soften it up a bit down low but I suspect it'll still have a hearty power delivery - so long as the black series 68mm compressor doesn't come at too much cost in spool. I suspect it should prove to be a pretty rewarding power delivery

I like it. Very cool, look forward to seeing how this comes together - sending it on E85? Please post results when it's done

Very nice! What kind of setup is it going to be working with? This is definitely the combination of the range which I suspect has the potential likely shine on an RB

I actually am more interested in seeing how the G25-660 goes, considering the .92a/r housing out flows most T3 options people use on RB25s as is. It could be a banger of a thing.

Nice work, I know this thread isn't for discussion but you left info on what turbo you used out which is one of the most critical bits of info?

Likely to be hard pressed to find much for a while - but I back the stuff I have posted to prove to be pretty on point once things show up, so should give a reasonable idea. Now that it seems more won't be shared immediately, I'll add that the G30 had .61 and .83 vband exhaust housings as options and the G35 has the same range of options as the GTX3584RS, but flows a bit more for each a/r.

NW. On this topic, just to clarify - I am making an assumption that they must be coming soon given there are compressor maps and other bits of info leaking out... I have no direct feed myself, I just keep ears and eyes open and people flick me things when they see it as I am clearly interested in this kind of thing - then I share what I find. There is no official announcement from Garrett at this stage so I wouldn't hold breath on how soon "soon" is until they actually say anything. It still could be a wee while away.

Oops, for some reason I thought I posted both the G35-900 (/ G3576) and G35-1050 compressor maps. Here is the slightly more down to earth G3576 compressor map:

Compressor map for the G35-1050...

I would put money on the G35-1050 (I'll call it G3584 because it makes more sense to me) being significantly laggier. These turbos should be compared on flow, not size. G3071 fits between a GTX3576R and GTX3582R in flow, or slightly more than an original GT3582R. G3076 is roughly equivalent to a GTX3582R Gen2 in flow, or more intriguing for some, it looks like the G3076 could be quite a similar match to an EFR9174, and the G3576 quite similar to an EFR9180 - but with MUCH smaller wheels. G3584 is drifting into the territory of a GTX4294R in flow. If you compared any of those G-series turbos with the previous Garrett equivalents flow wise then I suspect they will be much more responsive, however if you compared wheel size wise then they will behave like bigger turbos - both laggier, but also making WAY more power... just the balance of power and response will be better.