Jump to content
SAU Community

Recommended Posts

I can never find any solid information regarding this turbo and the RB25Det. 

So in the next few days I will be having one fitted to my car and tuned. Dyno sheet will be uploaded as well.

My mods are,

GARRETT GT3076R-56T G2 TURBOCHARGER T3 INTERNAL WASTE GATE
TURBINE HOUSING 0.82A/R

AEROFLOW BILLET EFI FUEL RAIL NISSAN RB25

Aeroflow 100psi oil filled gauge

Bosch 1000cc top feed 

Turbo smart FPR800 

Walbro 255HP pump

Relay mod for the pump and earth mod

Splitfire Coils

NGK BCPR7ES-8

FFP 

Front mount intercooler 

K&N air intake 

Z32 AFM

Apexi power FC with hand controller 

Autometer boost gauge

exhaust is 3" straight through with 1 rear muffler 

Internal mods unknown

*Note engine bay photo is a before photo. After photo to come with dyno sheet update 

Factory fitted sunroof, GTR wing, N spec body kit, front and rear strut braces, coil-overs 

and more. It's only done 125,000 kms not bad for a 1994 model.

fullsizeoutput_3fc.jpeg

N24152.jpg

0000490_walbro-fuel-pump-genuine-install-kit-in-tank-pump_870.jpeg

FPR800v2_blue_top.jpg

N33054.jpg

Bosch 1000cc injector EV14-500x500.jpg

IMG_0531.JPG

EL03063_1_2.jpg

IMG_0049.JPG

IMG_0515.JPG

IMG_0423.JPG

  • Like 2
Link to comment
https://www.sau.com.au/forums/topic/472823-garrett-gxt3076r-gen2-on-my-r33/
Share on other sites

Keen to see some results from the GEN II 3076. Should do 300rwkw on 98. I assume you're not going E85 with a little walbro 255? To get the most out of a GTX you'll wanna be running E85 and pump some boost through her :)

My old school GT3076R-WG makes 500.9whp on E85 20psi boost with headgasket/studs/cams, stock bottom end. Previous tune with completely unopened motor was 286rwkw on 98 18psi and 325rwkw on E85 22psi. 

Mine is external gate on CRG highmount mani also.

results ! 

conservative tune as I have now maxed out the AFM time for a map sensor setup to take it to the next level. Im also going to need a new boost gauge as that has maxed out too. 

Im very happy with the results and how it drives on and off boost. It will how ever take time to get used to driving with this new setup. 

C-Red did a amazing job with everything. 

fullsizeoutput_424.jpeg

uuJtlOCGRLiqPdbLJw7gKA.jpg

E1AD26j0QY+lS0IlA+d66A.jpg

bE+0x%0IT8C231KmItwgsg.jpg

1 hour ago, klutched said:

Keen to see some results from the GEN II 3076. Should do 300rwkw on 98. I assume you're not going E85 with a little walbro 255? To get the most out of a GTX you'll wanna be running E85 and pump some boost through her :)

My old school GT3076R-WG makes 500.9whp on E85 20psi boost with headgasket/studs/cams, stock bottom end. Previous tune with completely unopened motor was 286rwkw on 98 18psi and 325rwkw on E85 22psi. 

Mine is external gate on CRG highmount mani also.

Looks like mine did about the same. I wont be able to go to E85 there is no where close to fill up. Over here in W.A we only have 6 servos that sell it in Perth metro. 

I was advised that I'm now restricted by the AFM and the exhaust manifold. I was only aiming for 15psi but as I have found out this turbo loves the boost.  

8 hours ago, Dale FZ1 said:

Should prove to be a good combination Craig.

Next stop, upgraded clutch to handle the mumbo.

looks like it held up no issues. It was previously a track circuit car the suspension is still setup for it and other things on the car. 

Nice work, I was expecting better numbers than that especially with that sort of boost :/

Exhaust manifold isnt restricting, theres heaps of boys running a lot more power than you on stock manifold. AFM would be but I thought they could go a bit more than that. If you have the coin replace the dinosaur ecu and get a link/haltech whatever your tuner prefers and piss the afm off as I'm not sure you can upgrade unless you go to an R35 one but not sure if the PFC can use them or not.

  • Confused 1

Lots of fake Z32 afm's out there....either that or its not a Z32 afm.

Mate, I can sell you mine which is genuine & brand new for $300 flat including an apexi power intake filter (also brand new).

Z32 is good for 330-350kw.

I think thats theres a lot more too it then just the AFM getting close. I will have to have a chat to the tuner and find out what other things where happing while it was being tuned.

I do remember him saying that the coils may have had issues but i am running the splitfire one's could also have been the coil module. 

Spark plugs could have also been letting it down although they had just been replaced.

Also the weather temp this day was in the 35+ degrees so this is also a big factor to the out come of the HP.

I am very happy with the way it drives on and off boost. I fully trust the tuner and he has been doing it for a long time his dyno is known to read lower then other dynos. How ever when I get a chance I will put it onto another dyno for a power run to see what it is. 

On another note here is a few pic's of the dump pipe. 

l8C1xM6aR5COgGCkFkSPTw.jpg

%JoOk+qgRXus2+KxvXendQ.jpg

WDqNAvqxSFiHjqgvUCMaDQ.jpg

On 02/12/2017 at 3:23 AM, klutched said:

Nice work, I was expecting better numbers than that especially with that sort of boost :/

Exhaust manifold isnt restricting, theres heaps of boys running a lot more power than you on stock manifold. AFM would be but I thought they could go a bit more than that. If you have the coin replace the dinosaur ecu and get a link/haltech whatever your tuner prefers and piss the afm off as I'm not sure you can upgrade unless you go to an R35 one but not sure if the PFC can use them or not.

I agree that something isnt 100% how ever i do trust the tune. 

I have also had thoughts about the PFC being old tech and would like to go to something like a Haltech. The tuner said that it would be my next step among other things if i wanted to get more power and remove the AFM. 

 

 

Considering its internal gate, i think the result isn't too bad at all. If you where to go external off housing or even better, the manifold you would get a fair gain. Since e85 is a no go for you, you could consider water/meth injection. trevz in wa runs it on his 33 and ute i believe, you could get some pointers from him if you wanted to investigate that route.

The GTX76 mm is best working externally gated, I believe it is too big to be carried with an 60mm GT30 turbine wheel internally gated. In many cases you probably won't notice much of a power differences running this turbine setup internally gated on pump fuel with a GT71mm GT76mm GTX71mm and GTX76mm except the bigger wheels are comparatively laggier. The best way of taking advantages of the extra compressor flow would be running an external gate to your factory exhaust manifold. 

 

 

  • Like 1

I’m about the fit the same turbo all Be it will be on 6 boost and external wastegate, top mounted, on 98 Ron to a unopened rb25 neo, also power F.C.  Intend to run a r35 gtr afm probably in 4” tube 

im still on stock inlet manifold, will that be a major hold back ? Or just a minor issue? 

Also, do you need a external oil restrictor on these turbos for rb25 ?

Edited by Eager

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Update 3: Hi all It's been a while. Quite a lot of things happened in the meantime, among other things the car is (almost) back together and ready to be started again. Things that I fixed or changed: Full turbo removal, fitting back the OEM turbo oil hardlines. Had to do quite a bit of research and parts shopping to get every last piece that I need and make it work with the GT2860 turbos, but it does work and is not hard to do. Proves that the previous owner(s) just did not want to. While I was there I set the preload for the wastegates to 0,9bar to hopefully make it easier for the tuner to hit the 370hp I need for the legal inspections that will follow later on. Boost can always go up if necessary. Fitted a AN10 line from the catch can to the intake hose to make the catchcan and hopefully the cam covers a slight vacuum to have less restrictive oil returns from the head and not have mud build up as harshly in the lines and catch can. Removed the entire front interior just shy of the dashboard itself to clean up some of the absolutely horrendous wiring, (hopefully) fix the bumpy tacho and put in LED bulbs while I was there. Also put in bulbs where there was none before, like the airbag one. I also used that chance to remove the LED rpm gauge on the steering column, which was also wired in absolute horror show fashion. Moved the 4in1 Prosport gauge from sitting in front of the OEM oil pressure gauge to the center console vents, I used a 3D printed vent piece to hold that gauge there. The HKB steering wheel boss was likely on incorrectly as I sometimes noticed the indicator reset being uneven for left vs. right. In the meantime also installed an airbag delete resistor, as one should. Installed Cube Speed premium short shifter. Feels pretty nice, hope it'll work great too when I actually get to drive. Also put on a fancy Dragon Ball shift knob, cause why not. My buddy was kind enough to weld the rust hole in the back, it was basically rusted through in the lowermost corner of the passenger side trunk area where the wheel arch, trunk panel and rear quarter all meet. Obviously there is still a lot of crustiness in various areas but as long as it's not rusted out I'll just treat and isolate the corrosion and pretend it's not there. Also had to put down a new ground wire for the rear subframe as the original one was BARELY there. Probably a bit controversial depending on who you ask about this... but I ended up just covering the crack in the side of the engine block, the one above the oil feed, with JB Weld. I used a generous amount and roughed up the whole area with a Dremel before, so I hope this will hold the coolant where it should be for the foreseeable future. Did a cam cover gasket job as the half moons were a bit leaky, and there too one could see the people who worked on this car before me were absolute tools. The same half moons were probably used like 3 times without even cleaning the old RTV off. Dremeled out the inside of the flange where the turbine housing mates onto the exhaust manifolds so the diameter matches, as the OEM exhaust manifolds are even narrower than the turbine housings as we all know. Even if this doesn't do much, I had them out anyways, so can't harm. Ideally one would port-match both the turbo and the manifold to the gasket size but I really didn't feel up to disassembling the turbine housings. Wrapped turbo outlet dumps in heat wrap band. Will do the frontpipe again as well as now the oil leak which promted me to tear apart half the engine in the first place is hopefully fixed. Fitted an ATI super damper to get rid of the worn old harmonic balancer. Surely one of the easiest and most worth to do mods. But torquing that ARP bolt to spec was a bitch without being able to lock the flywheel. Did some minor adjustments in the ECU tables to change some things I didn't like, like the launch control that was ALWAYS active. Treated rusty spots and surface corrosion on places I could get to and on many spots under the car, not pretty or ideal but good enough for now. Removed the N1 rear spats and the carbon surrounding for the tailpipe to put them back on with new adhesive as the old one was lifting in many spots, not pretty. Took out the passenger rear lamp housing... what do you know. Amateur work screwed me again here as they were glued in hard and removing it took a lot of force, so I broke one of the housing bolts off. And when removing the adhesive from the chassis the paint came right off too. Thankfully all the damaged area won't be visible later, but whoever did the very limited bodywork on this car needs to have their limbs chopped off piece by piece.   Quite a list if I do say so myself, but a lot of time was spent just discovering new shit that is wrong with the car and finding a solution or parts to fix it. My last problem that I now have the headache of dealing with is that the exhaust studs on the turbo outlets are M10x1.25 threaded, but the previous owner already put on regular M10 nuts so the threads are... weird. I only found this out the hard way. So now I will just try if I can in any way fit the front pipe regardless, if not I'll have to redo the studs with the turbos installed. Lesson learned for the future: Redo ALL studs you put your hands on, especially if they are old and the previous owners were inept maniacs. Thanks for reading if you did, will update when the engine runs again. Hope nothing breaks or leaks and I can do a test drive.
    • No those pads are DBA too  but they have colors too. I look at the and imo the green "street" are the best.
    • I’m not sure what happened I told them about sonic tunes free OTS tune and the next the I know .. I was booted..   To funny 
    • Yea - I mean I've seen my fuel pump which is decades old and uh, while I'm not saying this with real knowledge... but I sure get the ick at using anything in the fuel system that produced the state of that pump. Many years ago I went through multiple pumps (and strainers) before I dropped the tank to clean it out with extreme violence. I'm talking the car would do maybe 50km before coming to a halt, which resulted in me cleaning out the filter with some brake cleaner and going on my way. None of my stuff ever looked like what came out of your fuel tank. I don't think I'd be happy with it unless every single component was replaced (or at least checked/cleaned/confirmed to be clean here).
    • I'm not going to recommend an EBC pad. I don't like them. Just about anything else would suit me better. I've been using Intima pads for a while now.
×
×
  • Create New...