Lithium

Have you mounted it yet?? You should find it doesn't look tiny, we've had a GT3076R and a GT3582R next to each other - the GT3076R does not look a hell of a lot smaller at all. 2Rismo - considering GT42RS?? Why did you bother going a GT3582R if you had the idea you might go something that big down the track

Trust/Greddy = Mitsi Blitz = KKK HKS = Garrett Apexi = IHI They all do things to help the turbo sold suit their application a bit more than buying something directly from the non-aftermarket manufacturer. HKS (as said a few times) offer some wheel combinations you wouldn't get when buying a Garrett "equivalent", and use a different ball bearing cage to what the Garrett units do - Garrett use a "plastic" cage which can fail, especially with insufficient cooling hence you NEED water cooling with Garrett turbos. I believe HKS use something a bit more resiliant?! Could be wrong though. Just the little things, though the only thing that'd have swung me to getting an HKS GT3037 instead of a Garrett GT3076R would have been ease of install if the price had been more comparable at the time.

Yeah the "good setup" thing runs very true here, I have similar power on exactly the same dyno as Nizmo_freek, at least as good tires on higher profile 17s, but stock suspension. I cannot go more than half throttle in first gear, and even then that sits it right at the limit of traction - second gear is fine though unless I shift gear aggressive. A rapid shift into second will result in more show than go. In the wet, rolling onto the throttle in 1st, 2nd or 3rd can be iffy... suspension is right up the top of my "next mod" list.

Yeah its Psymin - and the times it has run are not that flash at all for the power its made, hub dynos read higher than Dyno Dynamics BUT that is still slow for that power on that dyno. Is yours still a 2.6?

There is a chap in NZ who has a 800hp Stagea using an RB26DETT converted to single T04Z, it struggles to go much faster than around mid 11s on the strip though I figure the 2.6 is far too small for the heavy thing.

The only GT30 that has the T04S compressor cover is the GT3082R, unless you count the weird ball bearing GT30T04 thing that some guys in Ozzie end up with. GT3076R is a .60a/r antisurge cover That turbo looks like a weird Ozzie GT30T04 76mm thing with a VG30 turbine housing bored out to fit the turbine wheel.

Not true, higher revs add a far greater load than increased torque on an engine. You can double the power of an engine using boost and the same rev range (provided good tuning) while adding only a percentage more stress on the bottom end - well short of 100% more. Its pretty much the opposite for extra revs, add 25% more rev range to a car to make only a little more power and the stresses on the bottom and top end go through the roof. The trick is that a large amount of the stress on rods etc go into accelerating and decelerating the pistons/rods in each direction (with the rods holding a lot of the force). Putting more boost into a motor will not add to net effect of the of the reciprocating masses, revs does.

13.3 @ 112mph I'd post a time slip but its a huge pic. That was done with no boost controller it was effectively boost creeping, until it finally reached 1bar and it would stabilise a bit. I needed to be well into 3rd before it reached 1bar of boost, so first gear was no/hardly quicker than with a stock turbo (running 11psi pretty much) and then built up from there. By 3rd is was starting to stomp. Since then I have put an AVCR in it and the comparison is night and day from back then - on the dyno it makes pretty much no peak power difference, just that in first and second it all comes in and the midrange feels WAY better. It was also lagging a bit on each gear shift prior to the boost controller

Yeah thats a fairly good point, if thats in 2rd - mine gets a lot more savage than that and romps through second. Makes the pretty noises too, but probably a fair bit cheaper setup - and only running conservative boost. The GT2835 vid posted in this thread sounds like it'd give it a spank Heres a clip with mine when I got the internally gated housing, before I got the boost controller for it: http://www.youtube.com/watch?v=1tajFNv_q7Y

This is interesting to me - GT3071R and GT3076R being capable of similar power, cases I have seen at least the GT3071R (at least on our hub dynos) start falling over just above 300kw where the GT3076Rs can start pushing higher than that. You probably need cams to really utilise the higher flow of the 76mm compressor wheel though. I know people have got well into the 350wkw area on hub dynos with them on pump gas, or over 370kw on race gas with the right setup.

Haha I have a fair idea of what a setup like yours drives like, and I recommend semi slicks being a permanent fixture to the back of the car

Most cars are around 1400kg these days, all the EVOs etc have porked up to that kind of weight. There isn't much you can get modern which is much under 1300kg. And in terms of fuel, you just described the state in NZ - 98oct is $2.04 a litre at the moment

Very nice video Was interesting to observe, I can't tell watching it if my turbo (.82a/r GT3076R) is any laggier - nothing obvious thats for sure . Something else which is interesting is your car is definitely a bit quicker than mine, I have made very similar power number but on a hub dyno so all it does is confirms what every already knows - hub dynos read a bit higher haha. When I sort a couple of things out I am tempted to try a 17-18psi tune and have a blat at the local race track (I actually have one 15mins drive from my house!! ) and see what mine does the rolling to 200k thing like. Should be good for some rapid 1/4 mile times like that, especially with some sticky tires.

Read it off the core - ie, not the housing but the bit between the exhaust and compressor housing - looks like this: Most Garretts have a tag with a serial number on it

Well I can't imagine what an RB26 with a GT30R would be like if thats true (which I doubt)!!! My car seriously makes GTRs feel lazy down low, and nothing too special up high. A stock turbo R32/R33 GTR feels like they have nothing on mine anywhere in the rev range, in my opinion. Again weight comes into it, but the thing even at part throttle starts pushing nicely from 3000rpm - if you still have much throttle by 3500rpm then you're probably breaking a law if you are on a public road.

I'm going to really have to go in a car with GT-SS, from what you're saying they spool better than the stock twins?!

I am glad you said that - I have said similar before and been flamed for it. A mate of mine is making in the high 300kw @ wheels area with his R32 GTR running a .82a/r GT3582R and it feels better on the road than another mates GTR running twin GT2530s. The GT3582R car and the GT2530 are running the same boost, the GT3582R is faster down the 1/4 (trap speed and ET) and doesn't need to be basically bounced off a limiter/launch control to launch without bogging. It feels to me like a better setup, and its far tidier, easier and more impressive to look at haha.

Yeah I understand what you mean, and without proof I (or neither of us) can really debate it. I can tell you that my car (RB25 + GT30R) monsters any GTR I have driven for spool etc. I can't promise how much it is to do with vehicle weight however. I've never driven a GTR with GT-SS however, but they wouldn't make any more power than a GT30 would they?

There is only one GT3040R in that thread which I have seen, and it was making ~300kw @ wheels with stock fuel system - the guy never came back (that I am aware of) with a result using the 555cc injectors he promised. Do you know of any others? I know people making well over 300rwkw with GT3076Rs on RB25s, so presumably people would make even more on GT3082Rs.

I think that'd probably be the way I'd go, especially if you have it in a RWD - I think lack of power isn't going to be your biggest problem For interests sake, if I read it correctly the 1.06a/r GT30 turbine actually flows better than a .82a/r GT35 turbine, and if that is correct and I am not missing something else (which is entirely possible) then using the 1.06a/r you will actually be able to make more power at higher boost than the typical .82a/r GT3582R. Given that the GT design is fairly well suited to bigger a/r housings, and that there is less rotating mass, it makes me wonder if you could end up with a combination almost capable of making similar power AND better response to with a GT35R. I hope Discopotato03 finds this, and enlightens... or shares an opinion

Well my personal opinion/what I would do in your position would be run with the .82a/r with the stock cams and pour a bunch of boost into it make the most of it being a punchy set up. Regardless of how much power it makes, it will be quite punchy though you probably won't have the full top end monster you could have. I reckon it could be quite a fun car though If I remember rightly the .82a/r GT30 turbine side has very similar exhaust flow to a .63 GT35R, and runs exactly the same compressor housing and wheel - so I can't see why it'd not do anything a .63a/r GT3582R would do, maybe SLIGHTLY less flow and better response. Its when you start getting into .82a/r and 1.06a/r GT3582Rs where you will start losing out in my opinion, I'm no expert though haha. If you intend on later on down the track upgrading cams etc, then you'll have a good idea of if the GT30 turbo is going to be sufficient - going GT2860s or GT2530s would probably be a waste when you already have the turbo and don't have the cams to really justify the extra flow up top. Again, only my opinion.

Hiya, sounds like quite a neat build - though I'm not sure why you'd go to so much effort and stick with the stock cams, I'm not entirely sure if or how much that may conspire against you in going for your power goal. Which turbine housing are you running on it, the .82 or the 1.06?? Also I'm not sure what dyno you will be running on, some of the aggressively low reading dynos over there you may struggle to get that out of a GT3082R though 340kw SHOULD be achieveable on most I'd imagine though no matter what you will be pushing the higher end of what a GT3082R can do. I know someone over here (NZ) running one on his RB25DET R32 GTSt and on slicks he has run 10.1 with a small shot of NOS.

Precision SC61 or Garrett GT3582R is fine for mid tens - they are much of a muchness power wise but the Garrett spools better. One of my mates did 10.6 on MickyT drag radials with a full weight R33 GTS25t using Jun ~260deg cams on an RB25, 272deg are pretty overkill in my opinion. You should be able to make do with 260deg Tomei Cams, and not revving over 8000rpm - another mate of mine was running 500whp with a .82a/r GT3582R on 1.4bar with those cams on an RB26, trapped over 120mph with a full weight R32 GTR on his first outing. With a S13, pure rwd, much less weight and exactly the same setup with decent suspension and tires you should be well into the tens and >130mph.

Have a look at their website www.htlracing.co.nz and get in touch with them there, or at least have a look there. The car will be racing again at Jamboree in Oz this year.

Looks laggier than mine :|