Lithium

This is a lot laggier, and is on a dyno that reads higher that what Mat's result was reading on - but it's also internally gated etc, you really can't compare the two and draw any realistic conclusions other than that this turbo is laggier. I'd love to see 34GeeTeeTee's on a Dynapack to see how much over 400kw it'd make! Might not be much, but would be interesting.

I think it's the other way around, the Subarus need that extra 500cc because EJs seem pretty weak at driving turbos and making torque - 2.3litre EVOs seem to punch harder at any given point than a EJ25, like for like... imho. Going from the majority of results, the DBB Green is a beast of a thing - in most instances, people go bigger or stay there.... whether for road, track, drag. The gearing etc seem to make them quite usable, though again I look forward to Mick's assessment as I am familiar with his car and what he expects from it. Given he had a GTX3071R on an RB25, it'll make the 73HTA (which is arguably at least comparable flow wise) on a smaller motor an interesting comparison.

Tis the BB 73HTA Green DP, and yeah the Americans are a bit on the big power side of preference... I think a 71HTA BB setup would provide what lot of people would really like (Mick sounded like he really wanted stock response which the Green realistically won't have, fortunately it's flow should more than make up for any extra lag :-D) but no option, but he at least got the last of the 65mm. FP have revamped the Greens and they now use a 67mm turbine and may even be moving to an open housing, which imho is actually moving away from the spirit of what the Green was all about. I can't wait to hear reports from Mick and Piggaz on what the new beast will he like, it is already a potent thing and the new package is going to make me even more jealous :-( Sent from my GT-I9505 using Tapatalk

He's had it for a week, he's just been having special time with it up till now.

Before this gets too much more like a Frankie goes to Hollywood music video - here's a POV of Mick's box:

I am pretty sure Kando have their own 360deg thrust as an option?

That's interesting. Any theory on why SimonR32 (first post: http://www.skylinesaustralia.com/forums/topic/347726-kando-dynamics-turbo/) has been running the T67 25G for years without issues? Thanks for providing input - I would definitely like to know if reliability has changed or is worse than previously evidenced from this thread, as I definitely don't want to be recommending a product which is going to cause people issues. In saying that, again I'm not like to recommend mismatched turbos to people anyway... so the likes of a TD05-16G6/TD06SL2-20G/TD06-25G should be comparatively safe?

Good good Occurred to me recently a lot of people seem to be getting failures over there and I was shocked to find "no BOV" was a trend in Oz. AFAIK (could be wrong?) thrust bearings get hammered when you get compressor surge, which would be massive without a BOV.

Out of curiosity - are these cars running blow off valves?

... this is closer to being the main reason ... ... than this is .... Though they both have an influence. This isn't a stab, I just think that if you are tuning your own car or dishing out advice it's worth understanding the fundamentals a bit better yourself... ponder on it. Not that I know anything, I'm one of many who have been put in their place for thinking they have a clue which might be worth sharing to help people get good results.

Always worth updating the thread - interesting to hear, though strange it's contrary to years of use by people here! A mate had to return something along the line too, when they supplied an 18G instead of a 16G - and they sorted him out quickly... the customer service for folks I know overall hasn't been bad, did they give a reason as to why they didn't honour the warranty? In some cases I would potentially take Hypergear more seriously as an option if I lived in Oz too, but in NZ Kando Dynamics makes more sense cost wise and in terms of knowing what you are going to get.

Weird - over the last year or so we've started using them here and they've been all going strong!

I've said it before - if more response than a .82a/r GT3076R is wanted, more so than the 50+lb/min airflow these compressors can offer - then I feel that both the compressor AND turbine should be stepped down in size, on an RB25 I feel that the .63a/r turbine housing has no place with a 50+lb/min compressor. In saying that, I guess there IS a way around what I don't like with it but thinking about what I've read this kind of thing may suit DP. - Mr Disco, what boost control are you using with the Link? And what actuator are you using with the GT3076R? Don't let this get out, but I could concede that the .63a/r housing is usable if you deliberately bleed back boost to anticipate and avoid the nasty tipping of IMEP. You want a torque beast, you could give it 20+psi by 4000rpm and bleed it back to 1bar in the higher rpm giving a flat wall of torque. The .63 will bring alive that slightly doughier 0-6psi that the .82 has though I found that after about 6psi has been picked up the .82a/r was about the same. As I've also mentioned I think a .63 GTX3067R would probably not be a bad thing for the likes of Discopotato, hard to say for sure because we've not seen results - but I do have that hunch... I definitely think it'd be much healthier than a run of the mill GT-RS, it may not even make that much more power, but it'd be a much better suit to the engine IMHO.

Agreed, I am guessing because of the well worn path thing most people who had setups which worked well and are fairly analytical and objective about it all should find similar results. One thing I don't fully agree with, changing compressor inducer definitely makes a noticeable difference to spool - often it can be more noticeable than increasing the exducer size... funnily enough. This is one of the reasons I felt really good about the HTA3076 (which is also a 52-trim, and would be really interesting to get involved in any GT30 comparison session if one were to be done). The Mitsubishi 16G, 18G and 20G compressors are run 68mm exducers but with 48, 50, and 52mm inducers respectively and offer quite different driving experiences.

Going by the cast wheel and the fact it's a DSM Red the odds are it's probably the old Garrett/Mitsi hybrid journal bearing turbo - I'm thinking. I too would love to see an HTA3073 on an RB25, I think it'd be a rather good thing.

I don't know who implied the GTRS and GT3076R would spool similar, no way that's going to happen.... Though probably due in part to unfair expectations from an undersized turbo for the engine. Most of the other stuff you say sounds more or less as I would expect, maybe slightly lazier but maybe fiddling with preload, boost control and tune it might feel more lively. Good luck getting it all cranking better, will be interesting to see how you go. In regards to Mafias result, yeah it went well with the 0.63 with battles to fight knock... If you are having to go to lengths to fight knock where others with similar core engines aren't then you are seeing a symptom of a system not working that happily, and the ethanol is a band aid.. Though I guess strictly speaking not a huge sin. Sent from my GT-I9505 using Tapatalk

Congrats on your mode to the world of "not strangling that poor RB25"! Sounds like you have already tasted the lovely sound and attitude of an RB25 that doesn't have asthma, I miss the smooth spool/rev of my old setup. Is yours the anti-surge housing, and does it make the silly noises the 56trims did?

Hahahaha all good, imho there is no further discussion to be had. Fwiw I'm one of those conservative fuddy duddies who while they know that plenty of people have survived being hit by lightning, being shot, getting run over, setting themselves on fire and all sorts of interesting things - none of those things seem really like good ideas, and I guess I apply that way of thinking to my possessions too. Much the same as if someone playing Russian roulette drops dead I tend to assume that while there is no guarantee, there is a good chance they died of a bullet wound - as opposed to suddenly got terminal cancer and died. Taking risks increase the likelyhood of something bad happening, whether people on a forum agree with you or not. Each to their own though Good luck!

It actually is an Australian thing, then! I am around track racing plenty here, and everyone but a few goobers (not calling you guys goobers, its just that the people I have met who haven't just happen to be best described that way) don't run them. The top time attack cars in the world and top drift cars in the world run BOVs, I'm going to go out on a limb here and say it's not just for show. Anyway, do what you like - but I think you should forfeit any right to complain about turbos failing if you do one of the cruelest things you could do to a turbo short of running them without oil...

Someone is setting something or tuning something very wrong if that is what is happening - the BOV should be leaking air, yes.... but if it's not set too soft it should be enough to keep compressor speed up to help it keep on steam, and also save it from surge (aka one of the best ways to damage a turbo). It might not be the cause, but if you are choosing to do that - don't be too surprised if you keep getting failures.

Suddenly it occurs to me that while I was over in Oz I remember being surprised to find that there was a bit of a trend over there to not run blow off valves - don't be offended by me asking, I'm not assuming anything... but because of how much I heard that I can't help but ask, what kind of blow off valve setup are you running?

Strangely enough thinking about it I know of hardly any GT-series based HTA turbo failures - not sure I definitely know of any, and I know of quite a number which have been used for track racing etc. Like usual, it'll be heat that causes any major issues.... odds are if its not on high boost and it's not sustaining heavy thrashing for a long time there (hopefully) won't be an issue. Touch wood, it's be fine so far! In 34GeeTeeTee's case I suspect the stock motor is the bit we should be more worried about

The Garrett based HTA turbos are based on Garrett cores, however the "FP" DBB turbos have metal cages - that covers the FP Green, Red, Black, Super94 and Super99 No doubt you can get the Garrett based ones with metal cages as well

Got the opportunity for a power run for the 16G on 20psi, so took it and were pretty impressed with the result - 20psi was road tuned and is the limit of the injectors so not necessarily an indicator of full potential but still pretty sweet. 297kw @ hubs, 20psi hit by 3500rpm:

I am pedantic, and at least for full power runs tune the whole timing/fuel map with it off - then do the same with it on, then you get to see the maximum potential of both (MBT and the torque number produced tends to change a bit) - *THEN* you can see when to turn it off, and then if/when to turn it back on again No one size fits all on this one, I don't think.