Lithium

Looking very nice man - how quick are you aiming to go with this???? Going by your nack, I'm not going to be surprised if I hear very near single digit numbers - if not...

Hi All, some of you may know that the Heat Treatments R32 GT-R has been in development in the off season and now is sporting a redeveloped engine/trans/turbo setup with the intention of going quicker. It is now back together and is now tuned and ready to run again with the intention of knocking its world record down a bit lower. Its next meet will be on the 5th of January at Meremere in NZ, given it will be the first meet with the new setup I wouldn't necessarily expect any records straight off - but I'll be there and will post up results if there are any people interested. Here is a link to HT's workshop updates: http://www.htlracing.co.nz/workshop.html

Awesome!! I love this car, and it must be incredibly well set up to do the times you are doing. Be good to see it nose ahead of FUUJIN in the UK as well, as thats one of the quickest actively campaigning GTRs. Either way, well done - and good luck

Errr, any tires you could use on a street aren't likely to hold the power a maxed out GT5591R or bigger would make :S I'd probably stick to putting something like that on a tube framed drag car with huge slicks. Here is a GTR running 4 full slicks black tracking down the dragstrip - running a lowly GT4508R:

Hi Mr twin turbo M3, if the twin GT30R is really yours the I am pretty sure we've communicated albeit under slightly different names. There is only one trim comp/turbine setting for the GT55 and GT60 turbos out there - they have an awesomely wide map and aren't likely to build boost quick enough to surge on a 3.9litre anyway. It'd make sense to go one of the smallest turbine a/rs on a BMW. You mention rev range etc - what boost level/power level are you actually after? GT5591 is a HUGE turbo, I'd not even consider a GT60 and barely think about a GT55. The GT60 you showed, and the only other GT60 I've seen used were both on 26Bs which would provide a shiteload more exhaust gas than a 3.9l BMW though I guess you have to consider compressor efficiency, spinning a 3.9 to near 9000rpm will probably require a decent one though again what are you needs? Are you sure you need to rev that high to meet them?

Sheesh thats honking, well done!!! Its running a T51R aye?

Cool congrats on going with that setup, look forward to seeing how it goes with cams etc. Would you like to post your RB26 GT-SS dyno plot? It would make for some interesting comparison. I overlayed my .82a/r GT30R dyno plot with my stock turbo one and I have overtaken the stock turbo by 3500rpm, so you are effectively saying the RB26 + GTSS will make better power everywhere than an RB25 ever will - perhaps short of putting a smaller than stock turbo on it and converting it into a tow setup.

I'd not be surprised if a Z06 did a high 10/low 11 on drag radials - Edmunds gave a time for the Vette and gave ~125mph trap speed, which is pretty solid. Clearly a quicker car in top end, just without the AWD launch. Nuts results for the GTR, nonethless.

No the V series have already outdone the RB in terms of making outright power, ~2000hp as been made on drag VQ35s. Heat Treatments in NZ *WERE* going to run the motor from the GTR in their 350Z but with research decided that the VQ was a better motor, and they've pushed an RB further than anyone. A stock standard R35 GTR has already hit the dyno and made power which you basically need a cammed, forged, aftermarket twin turbo etc etc RB26 to make which feels gives you a quite laggy car - VR38 looks like its just yawning the power out. Thread: http://www.nagtroc.com/forums/R35-Dyno-t20782.html

Dyno Dynamics dynos DO read silly low though, even compared to most other rolling road dynos. Giants result seems really high for a dynapack though - assuming he is the dude running N1s? Theoretically there isn't a huge amount you can do to make them read real high, you can see the TCF is set to 1.00 which is the main place you can inflate figures.

I am just curious - why do people consider the GT3076R too small for an RB26 but too big for an RB25?

Done 280rwkw on its last run on a hub dyno at 1bar of boost. Not too surprising it sounds just the same, its basically the same as an HKS GT3037 Pro S

GCG/XTR sell "GT3076Rs" with a .70a/r compressor cover and ATPTurbo sell a GT3076R-WG (actually, do they still sell these? I can't be bothered checking) runs a T25 rear end with trimmed GT30 wheel and a .70a/r comp cover. Both I believe are TO4S...

I have never heard of such a beast. What does the id tag on the core say it is? Any pics of the compressor cover?

Its the anti-surge housing. My GT30R does it too: http://www.youtube.com/watch?v=ClXcNtAMJjg

Enough to have a lot of fun I'm glad people in this thread have more sense than in others talking about GT3076Rs... they're an awesome turbo for an RB25

Simon Dudding ran his first 8 on the pick a part RB30

Which is?? Assuming it doesn't include a custom gearbox or bigger displacement?

After reading various turbo threads from Oz, I am truly perplexed. Maybe you should all get XR6-Turbos or maybe Supercharged V8s!! I've driven my mates R32 GTR with a .82a/r GT3582R and its building boost in the 2500rpm range and by the time you reach the revs the stock turbos have reached full boost the thing is pretty much ready to hit warp factor 9. It DOES have a big turbo feel below 3000rpm but phooey. You don't buy a GTR to show how good it can tow.

. Funny you should ask, a mate of mine's car is on the dyno right now. It is running a forged 26 with 260 degree cams and a .82 gt35r. Just at the early stages of tune but I can tell you with a .6 bar spring the wastegate is open before 3500rpm. Intention with it is to have a really streetable low 11s car with possibility of tens leaning on it. We researched before choosing it and couldn't find anyone running it so hope we are right!

So long as it has a thicker headgasket and a good tune it should hold on for a while. I know a few around here who have done them - not sure how it'd relate to the dyno referred to here but the cars in question were running high 120/low 130mph trap speeds.

Really?? Are you sure - I most definitely haven't heard of that. The 1JZGTE was twin and ended up with the single turbo CT20B if I remember rightly, which seem about comparable with an R33 GTS25t turbo from all I've seen.

Are you wanting over or around 600hp @ crank? It will be a lot laggier being that its quite a bit larger size, very cool/impressive looking turbo though. If you are "just" looking for GT35R type power have you considered something along the lines of a Precision SC61, a T3/T04S from ATP, an HX35/40 etc... quite a few cheaper plain bearing options out there.

I assume you are looking at 600hp @ wheels? Because a GT3582R will do 600hp @ crank quite happily. GT4088Rs have been used on RB25s and RB26s with .81a/r rear ends and aren't too laggy for their size, definitely better suited than a T04Z for a RWD turbo street car looking for the 600hp @ wheels power area from what I have seen. If I even lost the plot, its where I'd look.

Definitely agree re dyno print outs not showing the full thing, however showing my car bogging and recovering and destroying an R32 GTSt with stock turbo even by the end of first gear has to indicate somehow how quickly the thing builds? I think the GT3071R would be brilliant, and a bit better than the GT3076R for streetability. On the flipside its nice knowing I have 270rwkw and can EASILY go way past that. I think people are describing of GT3071R/GT2835s what I get with mine, ie - can hear the turbo spooling at minimum throttle in the 2000rpm range cruising around town. Throttle behaviour is very NA, etc. I'd *LOVE* to have an opportunity to drive a GT3071R and GT3076R turbo'd car back to back and see the difference actually. If you are SURE you don't want more than 270rwkw, and can live with changing turbos if/when you change from the mindset of "My car is at the quick end of a mildly modded car" to "my car is at the slow end of a well modified car" or are pretty sure you won't change to that mindset then the GT3071R is the one