Lithium

Very nice! I had considered the GT2835 as well and figured it'd be much like you report, good to hear they are still a sweet turbo. Definitely would be my choice over a GT-RS - though the GT3076R definitely keeps those who are a little more greedy happy haha

OK I tried 20litres of E10 (10% ethanol, 98RON rated Mobil fuel) in my car and the bloody thing changed its behaviour! I was somewhat shocked that such a low %age mix would, but it most definitely does. Its enough of a change to trigger me into coming on here to ask - is it safe to use on a Skyline?? I have the technology to check the tune etc - but there is no where that I have found to verify if Skylines (R33 GTS-25t in my case) are sweet to use with it. Thoughts? Have anyone here used it on their Skyline for any length of time? I love the way the car reacts to the stuff and if I can keep using it, sweet!

I didn't want to assume anything - figured people in Oz would be more savvy to the whole story so thought I'd at least link to the thread. I had thought it had been destickered so thought it couple possibly be an old pic, but would rather say - just in case.

Interesting thread popped up on Fullboost... http://fullboost.com.au/forum/showthread.php?t=6563

Damn stunning effort!! Very very cool, well done again!

Yep, sure. Faster than every production GTR up till the R35 - can't imagine what you think of them!

I am reasonably sure that the RB20 turbo has a vacuum line off the comp housing and I think the RB25 one is off the intake piping near the throttle body, something like that. Been years since I've played with either running an OEM turbo

There is only so far you can go NA, but the trick with the Honda motor is if it happens to be more powerful NA - what happens when a tuner puts a couple of turbos on them?? The C32A motors have seen 2000hp with turbos bolted onto the side of them. Given the NSXs were quicker than the GTRs with the same amount of cylinders, it will be interesting to see what happens when they go V10 - I think the GTR will be a hard act to follow but Honda have done it before. They DO go for a lot more money, but tend to stick to the more exotic end of the spectrum... not sure about in Oz but in NZ first gen NSXs can still command as much as R34 GTRs so they've got something right. For what its worth if I had a million and were going to waste some on a car it'd (depending on what the Honda comes out like) be the GTR, but don't sell them short - they build a fine car and at the end of the day if they can build something that sells for the price of a 911 Turbo which punches harder than a Lambo while being a fully functional reliable economical street car with the "mojo" of having a high revving NA V10 all the power to them.

Yeah the GT4202R is on a full weight R34 GTR that has only done one run down the 1/4 which was far from clean and did a 9 "off the trailer" with an H-pattern box. It will go faster.... What do you mean by "sound awesome", the concept or the actual sound of them?? If you mean the whistle, GT40, GT42, GT45 etcs all have the same kind of sound due to the anti-surge compressor housings As alternatives I believe a Turbonetics T76 or GTK1000 are in the same territory, as with Trust T88. All the typical 1000hp beasts. There is a really rare IHI RX8 for sale in NZ at the moment, I believe 1200hp rated... could go for that and be one of very very few. Unfortunately you'll never get a straight out answer on what exactly to expect, as I for one know of no one aside from maybe Indy race cars which have used them. Here is the R34 with the GT42R doing its run to get an idea of what kind of ride you could be in for:

All the turbos he mentioned are much bigger than a T04Z, I suspect he is shooting for a different target to what your T04Z would. Here is a dyno plot from an R34 GTR running a GT4202R on an RB30DET (cammed 26 head):

Not sure who you are directing those questions at, but all the GT35R turbine housings are interchangeable. You can go to the 1.06 or the twin scroll, however with the twin scroll housing you'd want to change your manifold to make best use of it. In terms of power, going by the fact that the 1bar and 1.4bar tunes on the GTR are a real similar shape it doesn't look like its showing the initial hints that the turbo is falling over yet so we have hopes it will crack the 400wkw mark with the .82a/r on pump gas however we'll just wait and see. Here is a snip of the dyno plot the tune from the last engine configuration:

In NZ the laws are a lot looser than in Oz, we have people running around with GT45Rs on high mount manifolds and all sorts of crazy stuff - a high mount GT4088R replacing a high mount GT3582R isn't going to make that much of a huge difference I don't think Just to clarify, you haven't made any thumb sucks about how much power you think the GT4088R would make or any explanation if or why you are suggesting alternatives to going that way - do you think its a bad idea?? I know the 1.06a/r flows a fair bit better than the .82a/r GT35 turbine housing but I'm thinking we could be running the risk of running out of compressor as well which would dampen things a bit. The plan is in the next month to completely max out the GT35R and at that stage we'll have a bit more of an idea of what it can give, and that should indicate whether 1.06a/r would be a good idea though at this stage looking at maps etc it looks to me like the GT35R is starting to run out of motivation a bit already. The car isn't just for going fast, the guy would like the shock factor of seeing a large turbo sitting in there - and it would be particularly nice if there is a large looking turbo in there that makes big power and isn't aweful compared to the likes of a pair of GT2530s etc. The GT3582R is a lot nicer to drive on the road than GT2530s/GT2860-5s so the hope is a GT4088R might bring it up to the same as if not at worst a little laggier than the twins. I have heard comments (potentially unfounded, but) that the 1.06a/r GT3582R is hardly any better at spooling than a TS .9x GT4088R... any thoughts?

Cheers Disco, again - I understand the benefits to twin scroll and its one of the reasons I have been bandying the GT40R I am not new to quick GTRs and know the common combinations, part of the exercise here is to do it a different way but hopefully have it still done well but I just wanted to make sure the GT40R itself is really the way to go, and get an idea of the feel etc. To give you an idea, the motor is being built with the intention of sustaining well into the 8000rpm area - its previous engine build was running a .82a/r GT3582R which ran 372kw @ wheels at a bit over 7500rpm and in doing so has already matched power and out done in spool a few GT2530 GTRs on the same boost etc which we consider a successful "responsive 600hp on a single" type setup, As I mentioned earlier in the thread (to avoid dyno debates) the plan is to get a solid 10s street car. I also mentioned it would be nice to pass 450kw @ hubs on a Dynapack.

Have a look around for GT2871R results as well, or HKS GT-RS ones as they're pretty much what "2560-10s" are. Dirtgarage on this forum is one such chap running twin GT-RSs.

Cheers disco, all of that stuff I had heard or worked out over time - hence the fact that we are looking at a GT4088R, and will probably get a TS manifold from Fullrace. R14 uses a GT42R which is a completely different beast to the GT4088R, I'd be keen to hear if anyone has any experience or know of anyone with a GT4088R on an RB26 and any quantifiable results to suit. I know of one guy who put one on his RB26 in an S13 but then got rid of it before he really went anywhere near its potential which was frustrating, I had been watching that build for ages. I have theories and stuff written down on paper which suggest it COULD be a "on song by 5000rpm" mid/high 400wkw turbo on somewhere in the midish 20psi range on a built RB26 running suitable mods using a decent TS manifold and maybe even nicer to thrash than a T04Z equivalent despite everyone running for T04Zs as the big single of choice for a street car. Your thoughts would be appreciated.

Yeah certainly doesn't look anything like a GT4094R!

Thanks, I know about Geoff's ones but I don't like to ask people who could be trying to sell me stuff things if I can help it - though one of his twin scroll manifolds could easily end up being used anyway.

I am in the mood for some epic thread resurrection - no one has really answered or covered this. Has anyone tried this yet? On *any* RB engine? We are looking into using one for a street/drag/track R32 GTR running a built RB26DETT - it will probably be a pump gas setup, looking at running well into the 20psi range but not reaching 30. Obviously as much power as possible without being too laggy is the order of the day. A big single is definitely the preferred option, to break the mold as much as anything else. The ability to run in the 10s in full street trim is one of the requirements Cheers

Thats because as far as I know they don't exist. For some reason some people have developed a like for called GT2871Rs GT2860-10s.

I often wonder if tuners over there are a bit rough when hearing this kind of thing - or is this people running stock turbo and no tune? All pros aside from the conversion cost imho.

I would have thought under 21psi for 400wkw would be a bit hard to achieve unless you are running quite large cams and lots of revs?

AWHP EVO, not rwhp haha - and it put its power down extremely well, its an absolute monster on a race track. I don't mind big turbos, they have their place - I just hate it when people under or oversize their turbo for their setup. For example, that evo running 280degree cams and revving to >8000rpm on 29psi is running not overly short of the choke line of the compressor map at redline but it is a huge turbo on a small motor. On the other hand I reckon a lot of people on SAU using GT-RS are running them beyond their efficiency (both hot and cold side) and I'd hate to imagine what life would be in the exhaust manifold of those things. Anyway, sorry to thread jack Nytsky - I find it hard to avoid this thread as I am amping to see how your car goes, when do you expect it to hit the dyno? (edit after seeing Cube's response) Yes, you hurry up too I eagerly await both of your results and impression to help decide the fate of mine haha

I would call a T67 more in the GT3037 or bigger territory myself, much bigger than a GT-RS - even the smaller housing ones. A TD06-20G I'd compare with a HKS GT2835 or Garrett GT3071R. I have seen an internally gated T3 flanged TD06 once off a Skyline which was imported from Japan though it didn't come with any real details.

The GT3076R when I looked for and chose one looked like it'd be best used at around 22psi on a built RB25DET so there isn't a huge amount of use for it over that. Its a nice not overly laggy turbo on an RB25 so with 22psi there should be a huge fat power delivery, it'll be wicked for a road car that can do drag and track. Just because the engine CAN make 100hp/cyl doesn't mean you are obliged to - it just adds one part of the equation to get what you want out of it. Highest power pump gas/power per litre car I've been in was a still 2litre EVO 2 running a .82a/r GT3582R running ~2bar of boost putting down just under 500whp (125whp/cyl), way faster than any daily driveable 4cyl street car should be.

Haha well if whatever record they have made up for themselves to target makes them happy then thats good. For the rest of the world - you have one of the very very few 7s GTRs in the world