Lithium

No idea, sorry - none of the guys I know who use that dyno are drag guys so not likely to get much of an impression. There are plenty of results out there of cars running HTA3586s at the strip though.... they go fast

This would be very interesting to see. That spool if it can be achieved will be comparable with what you'd get with some of the other turbo choices mentioned, if not better - and it'd be pretty cool in general to see what can be achieved with Stao's VNT setup with a known turbocharger. If it can make a T04Z spool full boost by 4000-4300rpm on an RB25 and be reliable, potential game changer. I could almost be tempted to get my R33 going again and send Stao an interest turbo to mess with

Ok. Just pointing out the power numbers you posted aren't really representative on anything if the turbos are not being taken to relative potential... Which is what happens a lot with EFRs given what their intention is. I have no doubt they are capable of more than the 3582

Why did they stop at 30psi with the EFR? Not very like for like, and it is definitely not going to be maxed out at that level

This might put into perspective - this test was done by a Precision fanboi crowd, both turbos tested to where they stopped making more power and done on an open housing manifold and an open housing CEA PT6266 (next up from 6266) compared with a divided housing EFR8374 still on the open housing manifold (wtf is it with people doing this?) which won't have helped it's performance. You can clearly see that the 6266 makes more power, and I don't doubt that even on a properly matched manifold that while the EFR would have spool better and made more power that it did - it'd have still probably fallen slightly short at peak vs the 6266. Either way, there is no way an HTA3582 is getting near 800whp - let alone on a Mustang dyno. This is at the high end of what you'd expect from an HTA3586!

Fair enough, there is little info out there still and I did offer it as what I've seen - but for what it's worth: EFR8374 = 62mm inducer, 83mm exducer HTA3582 = 59mm inducer, 82mm exducer Inducer has the more significant impact on power production - hence it being used to dictate race classes (ie, 67mm, 91mm etc). Also there are not that many EFR results out there, and the ones I have seen where they are leaned on (a lot of track cars don't - while HTA3582s are more often run to their limit on drag cars) they go past most numbers I see on HTA3582s. For the most part the HTA3582 only slightly outflows a run of the mill GT3582R, whereas an EFR8374 is definitely on another level.

Sounds like you've got specs in a bit of a knot PT6262, EFR8374 and HTA3586 are probably closest to each other in power potential. HTA3582 is a slight step down in potential power from those 3... I'd look at it like this Power potential (give or take) 1=) PT6262/EFR8374/HTA3586 2) HTA3582 Response (give or take) 1=) HTA3582/EFR8374 2=) PT6262/HTA3586 Again, general thumbsucks extrapolating from results and comments from people who I've spoken to who have driven the setups - I'd not take it as gospel so much as a general idea of where they roughly stand. I actually suspect the HTA3586 would be slightly more responsive than the 6262 but given my lack of direct experience and knowing the following the 6262 has I'll leave it there. The EFR8374 is a beast for the response it can provide for the power it can make. The HTA3582 would be ultra responsive, potentially a little more so but again - my lack of direct experience with the EFR means i'll leave that there too and say its just the impression I have from extrapolation.

Ahhh somehow I've missed that - nice

^ have you actually bugged them yet?

So it was a 6466!? I saw the pic and figured it might have been a 6466 or 6766 but I got no response when I asked - I *love* 6466, they are clearly an awesome turbo. Any word on how it spools on the RB26? Should beg JEM for a dyno plot post, it would be very very interesting

Think he is talking about transient response, so like when the rpm are up above boost threshold (like 4000rpm +) how does it respond to throttle input? Like on gear shifts or stepping on the throttle how long does it take to get silly if you already have the rpm up?

I don't believe a GT3582R will make 400rwkw on stock cams on 24psi - as I believe the engine with stock cams is the limitation at that pressure ratio.

I'm not talking about the turbo themselves, I am talking about the engine they are attached to - 34GeeTeeTee needed cams to get near 400kw on 24psi, I suspect he would have surpassed 400kw with a larger turbo as I think the HTA3076 is very near it's limit at that point... I also think that without the upgraded cams I think he probably would have fallen short of his current power figure, too. Hard to say to be sure, though.

That would be interesting to see Here's a stock head RB25 (OEM cams etc) with a .63 GT3582R hitting full boost by 4000rpm:

Not the worst problem you could have :-)

The HTA3582R is actually a 59mm inducer - only a little larger than that used by a GTX3576R, so the highest flowing sub 60mm compressor you are going to find, comparable flow to some 61+mm inducer turbos but responsive for it's size too. Its performance balance is very easy to underestimate, much like the HTA3076 which 34GeeTeeTee has now got results which prove the fact.

You didn't make 407rwkw, you made 407kw @ hubs - it'd be interesting to see it if would crack 400kw on that boost with stock cams, as I don't think I have seen anyone else do that with an RB25 despite some using similar or larger turbos. Unless proven otherwise I am far from convinced that the reason you have make that extra power versus cars run on other dynos on that boost on stock cams should be attributed to the turbo itself. Comparing turbine wheel sizes between different turbine designs to determine flow is folly as well - a Borg Warner 8375 has a ~75mm turbine wheel compared to a 68mm Garrett one yet they are very comparable in terms of flow. Doesn't mean it won't, but certainly doesn't guarantee it will.

A GT3582R HTA will get 24psi near 4000rpm - as with a Borg Warner EFR8374, and they have proven reliability.

Needs more Cloverleaf?

Would love to try an Adaptronic, amongst other ECUs out there. People here even bag Links/ViPECs for their results - again, ultra suss that people blame their tools and annoying that they somehow manage to get the benefit of the doubt.

Is there enough evidence to suggest the EFR7163 was a successful concept? I've not seen enough testing to draw an opinion on it, and if it is released does that mean it will replace the 7064? Having both seems strange

Not sure what your overall setup - this is 9:1 compression, 272deg 10.25mm cams, running on E85 etc so getting a reasonable chance at life. I find this whole dyno comparison thing a bit so so, people have their own views - a few guys who run on the type of dyno this was run on (DynoTorque from NZ) reckon it compares directly with Dyno Dynamics though I am honestly not sure as I've not seen enough numbers from comparable setups to draw any patterns. I can say that 500kw(670whp) on that dyno is VERY fricken potent, its very very serious business. Given there is an EVO already mentioned in this thread doing 500awkw on a Mainline dyno as well, and people have made up around 800whp on US dynos - 670whp is not likely to be an optimistic number on a drunk built RB30

Yep, think I may have posted it in this thread - but:

It sounds unlikely that I'll get a dyno plot, the owner isn't really too worried about that kind of thing and never grabbed one - and lives far away from where it was tuned I kindof hoped that he would get a plot in the first instance but it never turned out that way. From what he has said in the past (he also used it on his RWD R32 GTSt before it was written off) it isn't very laggy at all, for what it's worth he uses it for hillclimbs/street sprints and feels he could or should go bigger.

.82 T3, and I don't think it will go 600kw Sent from my GT-I9505 using Tapatalk 2