Lithium

Those links appear to contain nothing at all to do with what he is asking? And also posting a link to more links seems a messy way of doing things, could have just posted a specific link and explaining what it is. Anyway, he never mentioned airflow, he was asking about spool/response

Good luck sir, look forward to hearing how it goes

Good luck sir, look forward to hearing how it goes

The last EFR failure I have heard of in the last 18 months (I think?) was an EFR9180 which was pushed a little too hard and the turbine wheel let go, which imho isn't a problem with the turbo so much as something worth knowing about keeping in mind when working with a Titanium Alloy type turbine wheel.... they don't like being over spun hard, same applies to the TD05 TME wheels etc. Again, that turbo was being push well past the limit - not just a turbo being used to normal, or normal "pushing it a bit hard" type levels.

Oh you have the non-DBB one - for some reason I thought it was the DBB version. I've only experienced the 82HTA compressor in a twin scroll GT3582R HTA setup and that was really really impressive response for the power it was making, "only" a pump gas setup too making around 500whp (DD rolling road style) on a 2litre. GTX I feel is more miss than hit given how far behind Precision and FP they were in releasing their technology, most the FP wheels offer better flow versus response - though now they've raised their prices (when GTX came out the HTA were cheaper) there seemed pretty much no point bothering with the GTX range, though now if you want an HTA with a non-plastic bearing cage it's pretty expensive. For RBs the EFRs are easily the best, they aren't particularly hard to fit big singles - not a lot more expensive considering the performance, and strong as anything... I find it weird that people have issues with the extra bits, they perform and save other bits of expense... especially if you are building a new setup. Not having to fabricate a place to fit a BOV, and buying the BOV in the first place definitely will save some coin and space and I don't mind the look of them, I reckon they look pretty serious business as opposed to yet another Garrett/Honeywell stamped compressor cover that could be anything from a T3/T4S up to a GTX3582R.

NONE of the alternatives mentioned are in that league though - so that doesn't really say too much. FP don't release compressor maps but there is enough info out there to get a reasonable idea of what the different compressors flow like where, definitely enough to get an idea of where each sit in the scheme of things, lack of compressor maps don't hurt Precision and to be fair I suspect 90% of people here don't really pay attention to comp maps or other related info and dynamics when choosing turbos. FP have some epic turbos, Garrett also suffer the same lack of twin scroll housing etc stuff you are complaining about - funnily enough most of the same housing options are available to both. The FP Black is a pretty awesome turbo, have you actually had it running and tuned yet?

They are all 68mm exducer on the compressor, and they are 48, 50, and 52mm inducer for the 16G, 18G and 20G wheels... Respectively. They all have the same turbine wheel Sent from my GT-I9505 using Tapatalk

Nope - I haven't yet, have fit two internal gate T25 Kandos of otherwise exactly the same model to SR20DETs though - had boost creep on the first one so ported the wastegate which fixed it, and ported the wastegate on the second one without even trying without the porting as we didn't want to risk it again. They both hold boost perfectly, now. On the SR20DETs they are making 1bar by 3500rpm - so pretty responsive, haven had an ACTUAL EVO 3 16G (ie, from an EVO, not a Kando equivalent) on an RB20DET and that made 20psi by 4000rpm from memory and held it to redline.... went very well but was only ever road tuned, so not sure of final power figures but gives a general idea that they won't be a big hold back to a stock RB20 that you'd going to be running 20-22psi through and are plenty responsive. Obviously the T3 housing version will have it's own isms - the Kando T3 and T25 TD05s fortunately have RB dump pipe compatible flanges etc, so I am assuming they shouldn't be the worst fitment, at worst may need a spacer to clear the comp cover like a lot of upgraded turbos, and naturally a new intake and intercooler piping attachments but I can't see anything being a show stopper. Bare in mind that 400hp will be at the high end of the turbo's capability on straight BP98, so it would be working harder than some options and I'm more theorising it should get near there - obviously not really much or any dyno results out there for them ... but as I alluded to earlier I'd rather put a 16G than an 18G on one, I reckon the performance balance is better. If the 16G isn't enough, I'd go straight to a 20G Anyway, my brain is fried today so I might stop here before I ramble too much more nonsense - but hope that gives you something to think about.

Are you more interested in making the full power, or as much response as possible? I personally am a huge fan of 16G6s on a stock RB20, at least if you are after a good usable power delivery - but the ones with the TD06 compressor cover, not the "bolt on" housing option. If I were doing a stock RB20DET on stock manifolds, this is personally what I'd go for: http://www.ebay.com.au/itm/Kinugawa-Billet-Turbocharger-Bolt-On-3-Anti-Surge-RB20DET-RB25DET-TD05H-16G-8cm-/271457770181?pt=AU_Car_Parts_Accessories&hash=item3f3424dac5. There is some debate on their flow, but I view them as an honest ~40lb/min compressor which should get you an honest "400hp @ crank" on a setup which is working well. It'd probably be worth giving the wastegate port a little bit of opening up to avoid creep as they can do it, and it's not hard to take a bit of meat out of it - the flapper is big enough so cover a bit of opening up. I don't rate 18Gs from what I've seen of them, they don't seem to offer a worthwhile amount more flow than the 16G but lag increases enough that you'd hope for a worthwhile increase. Haven't seen any results of the billet wheel, but logic would have it that its going to be at least as good as the cast wheel given it's the same design with a little bit less hub area (ie, a bit less inertia, a bit more usable volume for pumping air).

Outperform/be as good as is a relative term. The cool thing about a lot of these turbos is the size difference - I almost had to eat my hat (thanks Nytsky) its pretty cool that a 64mm/66mm turbo can make the same kind of power as a 70mm/71mm hero turbo of the previous decade... there is no that that is not giong to have a really noticeable difference in the real world. Aside from "that sound" I'd much rather have that response of the 6466 and the same power as the T51R Kai, quite keen to see results from FP's take on the 6466 which has now been released - they are clearly taking aim at the Precision unit and their turbos in that size range are often quite rowdy, if they can do something to rival the 6466 in all relevant ways then that would rule Precision already do a PT6768, and FP do a "6868" (Super 94HTA) using an aggressive (flow versus size) turbine design so there is already something on the market for that kind of target, but yeah - I think decent built RBs probably need something with more turbine than the likes of the 6766, depending on what you are looking for.

Pretty sure my hat JUST survives lol... Very very close though lol

That's the one with the upgraded compressor that ran at JEM? But yeah, folks have gone over 600kw in Oz with 6466s - bigger numbers in the US but obviously dyno comparisons get a bit iffy Aggroman - there are others that make that sound too But yeah, safe bet with a T51R.... it's one of the things that disappoints me with the Precisions, they all sound pretty run of the mill. Yeah, I let the sound influence my turbo (and other parts) choices

Haha I was wondering if I would be called on that :-P I'll eat my hat if someone can show an unmodified T51R Kai making more power than the highest power 6466 setups, but yeah I was perhaps making a tall call on the Super94 haha... In all fairness the T51R SPL probably has an outright edge, just there is a fair chance of 90pc of people who use them won't see ever make good use of it. Sent from my GT-I9505 using Tapatalk

No worries

HKS 7071 The two sizes relate to the "visible" size of each wheel, ie compressor inducer and turbine exducer. Puts things into perspective when you consider a PT6466 flows more than a T51R Kai, and even a FP Super94 HTA (aka, FP6768) is a fair bit smaller wheel wise while being capable of T51R SPL flow

No, they won't - the GTX3067R and GTX3076R will be really different to drive in terms of spool and especially response. Way more inertia on the 76mm, and there are also aerodynamic effects which will come into play. There is a possibility that at steady state on a dyno (ie, find the minimum rpm you can build 15psi by holding WOT against the dyno) there may not actually be as huge a difference as one might expect - but that means next to nothing in the real world.

Sorry, I'm not familiar with OP6s - guess they aren't flash in general then, I was just talking about general turbos on RB20s. I am pretty sure Roy made more power with less lag on his, hell I've tuned an RB20DET with a junker T3/T04E bolted onto the stock manifold which spooled better than that. It puts things into perspective anyway. On the other hand, the power is impressive for a bolt on turbo on an RB20DET, assuming I have the dyno reading comparison right (I use Dynapacks and even on them 240+kw on stock manifold on a stock RB20 is good going on 20psi) - is the motor completely unopened?

Nice power, that's gotta be fun - though 4800rpm is pretty nasty, even for an RB20.... hopefully that spool can be improved as suggested as it's not that flash at the moment at all, imho.

Oh... That was you! The results were way low, if the Precision crapped out I wonder if it was playing up or there was some other issue the whole time.... Awesome that you have it sorted now, and all is well, but the performance difference between those turbos seems unlikely if both were performing properly - albeit very very impressive if that is a realistic indication of how that turbo goes against a healthy 6466!

Yeah I feel similar from all I have seen, the GTX seem a bit hit and miss in relation to what they cost - the main redeeming feature the whole range have is they have a sturdier core than the old GT-series, but there are some (GTX2863R, GTX3071R, GTX3582R) which seem like pretty good things and I'd have no hesitation recommending those over a lot of other things to people in the right circumstances. The GTX3067R I still want to see some results before I give it a complete nod haha

I definitely rate the GTX3067R as a potentially great thing for a lot of RB25 users, not a thing I'd go for personally but heaps of people liked the GT2835 and GT-RS turbos.... if I wanted that kind of response etc, then I'd FAR sooner put this on my RB25 than a GT2835 or GT2871R - and I'd do it with a .63a/r T3 housing. With that kind of combo the inlet versus exhaust pressure ratios and the energy caught by the turbine I suspect would be way more positive than some of the crap that would have been going on with some of the old combinations that people were doing. I reckon people may be surprised at the power and performance versus boost levels people would get from these, per psi I think they'd school the old HKS GT-RS turbos - and giving little/nothing away in response.

This is going to be mental So how much of a setup was the old 340rwkw setup? Like built motor? E85? How much boost? It's going to be a very different monster haha

Haha nuts. This is going to be one to watch

Hi - sounds like you are on a mission for something pretty intense The Super94 HTA is an awesome turbo, and as much as I'd love to see one on an RB - it's more turbo than you NEED to surpass 500kw, over 500kw is a broad term so if you mean anything over 500kw but with maximum response then the Super94 is more turbo than you need for the job.... being that its more a 600kw+ turbo when ethanol gets involved. In saying that, I have been talking to someone with a Super99 HTZ on his 3litre Supra road car and he reckoned even that wasn't actually that hard to get to come alive once he was over 4000rpm and the Super94 is a reasonable amount smaller on the compressor. The short of it is I don't know exactly how responsive the turbo would be on a 3litre, I don't know of anyone who has used one and got it fully tuned on a 3litre yet but have absolutely no doubt at all it will go over 500kw with supporting mods to suit - I'm just not 100% sure what response you should expect compared to other turbos which will also get you in the 500kw range on E85, absolutely not saying it will be a laggy sack... just you will have one of the most responsive turbos you can get for it's target power range, let alone for the money - but if that power range is higher than yours then you may be sacrificing a bit of response. Interestingly enough I actually had this conversation with someone a few days ago and am still soul searching whether I want to go the exact same combination on my own Skyline or not - and if I decide to build an RB30 it's one of the most likely options I'd go for. I've been in Skylines with comparatively sized (physically) turbos and motors and found them perfectly liveable for my tastes... and even if I weren't to use the full flow, I know I have something usable that isn't straining to make 500+kw and has the option of going full retard on occasion if I want to run a hero boost level. It just depends on your taste etc. edit: You posted while I was writing my speel. AWESOME! I am really really keen to see how this goes I hope it turns out well, it's certainly got the potential to be a monster. Is it a GTR? Hopefully you have a strong motor, gearbox and big fuel system Damn that's shit timing with the pricing, they were still cheaper yesterday... I am sure.

I don't think they are that bad, a 1.05a/r TS seems like a good option But if you want T3, fair enough. I think this looks pretty cool personally: https://www.facebook.com/photo.php?v=657790024292267&set=vb.217004505037490&type=2&theater