Lithium

Yeah it seems they are programmed into thinking that a good single turbo which isn't suited for >700hp is too small for a GTR, I guess it allows the "twin low mount" purists reason to believe that big singles are laggy. The reality is a GT3076R feels at least as good under foot than the stock R32 GTR ones yet is capable of substantially more power too - if you were going to go for an upgrade focussing on response with a measureable amount more power, a single GT30R I reckon would be the dogs bollux on a GTR. Don't tell a person about to drive it that its running a single instead of a pair of little twins and I doubt they'd work it out, aaside of course from the fact that a pair of GT-SS don't have a angry little anti-surge whistle haha.

I'd say you should indeed run screaming, sounds dodgey as all hell and doesn't look like the genuine Garrett engraved A/R 70" compressor housing. It looks like its supposed to appear to be a Garrett "T04Z", but putting "Precision", "Turbonetics", and then to top it off "Borg Warner" which just are not Garrett related at all just reasons my suspicions a tad.

You'll find if you search for GT42R/GT42RS/GT4202R cars will sound suspiciously similar

Yeah, I'd be tempted to try and roll with a .78a/r GT3076R...

Yeah mentioned them earlier in the thread when "GT45xx" based turbos came up.. they are pretty new and will probably be a pretty limited run. There is a drag GTR in the UK which is having one installed and should be doing some runs with it in the near future, same car did an 8.2 with a T51R Kai so should be very interesting to see what it does with something this substantial.

Very very very very nice! Good consistant times there, love hearing about it - it was driving me crazy that all the reports of the Jamboree I heard didn't include your times even though it appeared you were there. What tyres are you running on it these days? I know you got very fast on the drag radials but not sure at what point (if?) you went to a full slick.

I'm not recommending this, but just showing it for interests sake: http://www.draganddrift.co.uk/photos/rick_...ug16_051745.jpg

Holy crap, sorry my bad- I had assumed going by how often people mess up and quote incorrectly (and its way more often than not) I thought you may have just miss spelt or been misinformed. Ok thats an awefully neat little turbo there which I wasn't aware of, yes - very very T51R SPLish. Nice! Learn of something new every day.

OK a GT4508R is quite different from a T51R SPL, HKS have only JUST released a turbo comparative to the GT4508R and that is the T62R which they showed the prototype of at the last TAS. A T51R SPL is so similar to a GT4202R that there is no point in my opinion in paying the extra for the T51R. A chap I know has run a T51R SPL and a GT4202R on very very similar engine setups and he got slightly more power out of the GT4202R and both seem very similar spool - the GT4202R setup was on a manual trans car vs auto for the T51R. In both cases I believe the turbos had been run to the point they weren't going to really make any more power (around 1000hp). The car that had the T51R SPL on it is in the process of getting upgraded to a GT4508R, will be very interesting to see the results of that.

I have no idea what they are going on about with the "Garrett T51R" thing, sick of inbetweeners making up random names and confusing people with them. The closest I know of to a T51R is a Garrett GT4202R, nice turbo. GT4202Rs sound exactly the same, dirty big turbo with anti-surge housings will do it every time

Thats crazy, I would be clutching at straws really to give anything haha. Is there ANYTHING else about the setup that you think you could share? What kind of air filter were you running? Its a bit weird there isn't obvious pitting/strange shape in the piston - ones I have seen from lean run or det are usually a lot less "smooth" than that, its almost like its been machined and I'm sure you'd have mentioned if the spark plugs had melted or anything like that. Its rather odd. The more I think about it, the more I think its gotta have been detonation.... did you have knock mic on it etc when tuning?

It most definitely is one, congrats on acquiring a very nice turbo

Haha there was a huge thread on a GTR UK forum about this, people saying flat that either its not running the GT2860-5s, its running nitrous as well, or it never ran the time because its impossible on those turbos. With race gas, a good setup, and good tuning its clearly possible FYI, there is no such thing as GT2860-10s, its a name given to GT2871Rs which can be "bolton on" by someone who doesn't get it in my opinion. By Garretts own naming the "60" part of GT2860 refers to the exducer size of the compressor wheel, which with the "-10s" is 71mm. They're actually an equivalent of HKS GT-RSs (instead of GT2540s)... my best assumption is that some people call them GT2860-10s because the suffix of the part# is "-10" even though its a completely different family and also the fact that its a bolt on upgrade for the GTR and looks externally pretty similar. They'd be a wicked turbo for a high-power low mount GTR, basically what DirtGarage has on his R32.

Awesome!! Glad to hear, have been following this for quite some time and can't wait to hear how it goes on the rolling and the tarmac dynos

Its an HKS TA45 - I believe ~650hp turbo. Quite old, I'd have thought? Good for around 650hp.

Nice, what are you doing there?? I spent a few weeks in Malaysia last year for work and pretty sure I saw the same car in Penang while I was up there. Was the first Skyline I saw - though I spent most of the time in JB were you were lucky to see a hot Proton.

No actually I am from NZ. Dyno Dynamics DO seem like they read lower than most other dynos anyone anywhere use - the others are all in far closer proximity in terms of results than the DDs. Mustang dynos (used in the US mainly) are pretty close to DD though. Majority rules, Oz are the odd one out. Its not that Americans/everyone else have happy dynos, its that your ones are low reading - you'll find that the reason most people who can afford it who are going for hub dynos aren't doing so for the bigger numbers... if everyone measure using the same unit it becomes all comparable, the "bigger than dyno dynamics" measured numbers end up just making it like a different currency. Because of the consistancy of the use of Hub dynos around the world I can get a good idea of what to expect out of my car - people have tried every set up under the sun in the states, its just a matter of finding it. I know that my turbo on C16 on a good setup can make 550whp/410kw @ wheels on a hub dyno - and I know what 280kw @ wheels equates to roughly in the real world so I can ascertain that its going to be good if I max it out. I know that people regularly get over 450whp on pump gas with a good setup, or ~335kw @ wheels on a hub dyno - and I know that people with similar mods to me are making around 250kw @ wheels on dyno dynamics. If I were to use that to make a conservative thumb sucks I'd say the difference is at most around 12% between a DD and a hub dyno from the above comments. If that were so, 300kw @ wheels should be the normal target for a .82a/r GT3076R with a bit of head room on pump gas, or if you are going to be ruthless and put "race gas" into it and crank the boost you should be able to make 360-370kw @ wheels. Those readings would result in very happy cars

I reckon this depends a lot on dyno, setup etc. What dyno were you running this one? Do you have high mount manifold/plenum/cams? How much boost? I must admit I have never seen what these will do on an RB25DET though I am most keen to try and push mine hard at some point. I have seen Hondas/Mitsis getting well over 400whp/300kw @ wheels with these on pump gas on Dynojet and Dynapack dynos and mine has made 280kw @ wheels on pump gas without even really trying. I am quite confident that I'd crack 330kw @ wheels on the turbo I have (.82a/r GT3076R) on a hub dyno with a decent manifold, cams and a decent hit of boost but the way the dynos read in Oz I'd consider a GT3582R for 330kw really - as much as anything just because a GT30R will definitely be at the high end of its capability on 330kw @ wheels whereas a GT3582R would be humming.

I know, and that is exactly what I did. I want to run 1-1.1bar (completely stock internal RB25) and in theory its a ~1bar actuator but it lazily creeps open before it reaches 1bar, hence the problem.

Nice. With the AVCR I cannot use 100% duty, and it always creeps open - it effectively makes it take its time to 1bar and is really annoying. It gets to 11psi fairly acceptably and does climb a crapload faster than without the AVCR on, but still. Would an HKS actuator or something like that help, maybe?

Hmm I never checked over mine that closely. Something that has been bothering me is a strange habit my car has - the wastegate opens at ~11psi no matter what. Boost will build sharply until it reaches 11psi, then it acts like the flap has cracked open slightly then boost will build until it reaches the preset amount I am after. An electronic or manual boost controller does not seem to fix this - it only affects what happens afterwards. If I wind up any more preload on the actuator to alleviate this, it will boost creep past 15psi - it kind of puts me in a rock or a hard place. I will have a proper look at how everything is lined up tomorrow, perhaps I am getting the same thing but my car may be more subject to boost creep.

Yeah its pretty shit here for getting parts, my turbo, injectors etc had to be ordered from overseas - if I ordered them through a shop then it would have taken the same effort and amount of time but a bit more money. Not for everything of course, but its not necessarily the easiest. Being one of the more remote countries in the world with a small population basically means its not worth stocking up heavily on parts. Clutches I *can* get pretty easily and cheaply so the way I see it, if it breaks I can decide whether to get a single or a twin plate. Thanks heaps for your help - good having people who have been there done that!

LOL yeah I know its tyres (its that in NZ too), I'm not always too sure about how you do things in Oz and get used to using tires on overseas forums. Wanna chup brue? In terms of decent single plate mine has been holding on fine for ages, I don't think I'd worry about getting a clutch until I reach that point - there are plenty decent one available. The 280kw may not be the same as 280kw on the dynos you are used to, may be closer to 250kw at a guess - whatever a .82a/r GT30R running around 15psi on a stock RB25 would make normally. 2Rismo - thanks for that. Where did the reference to Greenlane speed shop come from? Do you have reason to think they stock Mickey Thompsons?

You can easily spend >$1kNZ on a pair of tires like that. The local shops I have spoken to don't supply them, a couple have indicated they can try and sort it out but the cost would basically be them buying from an overseas company and charging me for everything + their cut. I've only ever seen one set of drag radials used here too, most people go the DOT slicks at around 26x10.5x16 which would be a bit more than what I would think I'd need? http://www.trademe.co.nz/Trade-Me-Motors/C...n-169832480.htm Also, will I need to upgrade from my heavy duty single plate clutch to a twin plate for 255x50x16 MTs to not destroy the poor thing?

Cheers! Thanks, that was my initial preferred option but for some reason people warded me off them - but I trust you guys more Can you get them for a decent price, 2rismo? I am NZ based at the moment and they're not easy/cost effective to buy here. At the moment my best option looks like this: http://store.summitracing.com/egnsearch.as...k=KeywordSearch