Garrett Gtx3071R

[Piggaz]

Those nangas are noisey bastards but thats Steves fault I have the right filler wire for those pipes at the workshop and a good plan of attack too mate

Ah fantastic man . I'll be keen to see the results of those. Might be another 'thing' to add to the list

[N1GTR]

Tyre noise? I don't know what you guys are talking about

If Santa doesn't bring you an RB30, you might have to just give yourself a present haha

[DVS JEZ]

Tyre noise? I don't know what you guys are talking about

Oh good its not just me that smokes Micko's tyres up haha

[Mick_o]

Apparently santa doesnt exist so have to splash out and spoil myself haha! I think you made the top shelf Nankangs scream louder Jez i could hardly hear your car when when we both drove off from the shops haha

[Piggaz]

Mick, your Nangas need to meet Steveo's 'indias best'. They will get along well

[N1GTR]

Yeah here we go, i think they're called "Motorway" brand but who knows (or cares hahaha). I promise they're junk. To their credit though, they're not showing any significant wear after what they've been through so I'm sure their treadwear rating is just a guess by the manufacturer. I only have this video handy, but yeah, they suck haha

http://youtu.be/gTPLXUwuzz8

[Piggaz]

"can't even see the car"

Haha!!!

[DVS JEZ]

They were sooks after ur burnout Steve. How many rounds did they make u sit out?

[N1GTR]

1 round.

They said do a little skid, not my fault no one specified any other rules and left it up to drivers interpretations haha

[N1GTR]

Anyway back to the topic at hand.

One super clean 33GTST that needs more cubes haha!

[GTScotT]

LOL @ kicked off for following direction. Thats got to suck! lmao

I told mick to go high mount and a FP 86 HTA, as he said he wanted to test the boundaries of the stock motor lol

[Mick_o]

Haha nice skid Steve O that was only a small skid well for your car anyways lol old mate was giving you the big finger through the window the 3L build would be awesome and so would the HTA 86 butIm liking the standard low mount position and trying to look stock

[STATUS]

They were sooks after ur burnout Steve. How many rounds did they make u sit out?

Officials and arms crossed = tears to follow...

[discopotato03]

I finally reached the end of this thread and took three sessions to get here . As you know I've been looking beyond my GTRS and doing some reading on these GTX 28 and 30 based turbochargers . I first looked at the new "baby" or entry level GTX30R" which is the GT3067R . The 67mm GTX wheel is unique in thats its 10 bladed where most if not all other GTX compressor sizes have 11 blades . Now initially the 67X was a newer GT28 compressor option and in the same package outline as the GTX2860R and GTX2863R . Note they all use the same recently released Garrett 0.60 AR T04B port shrouded (surge slotted if you like) compressor housing . If you go to the turbobygarrett web site you can download their Volume 5 catalog and its interesting because there are comments about the GTX2863R and GTX2867R from I think drift people . I reckon these are aimed at 2ish litre four cylinders but they could be used on smaller capacity sixes if you had a suitable turbine housing .

The "crossover" turbo is the GTX3067R because its literally a GTX2867R with a GT30 turbine and turbine housing . Someone at Garrett obviously thought that the GTX2867R could benefit from a larger turbine and housing combination and logically open a larger hot side flow path . There are probably other reasons like having a T3 flanged turbine housing and its possible that it suits an OE diesel app ie low reving engine needing a reasonable amout of air at high PRs with low exhaust restriction . I have not seen what happens when you bolt these to a 2-2.5L petrol engine and while the compressor sides capacity looks reasonable its hard to say how it would go with say a 0.63 AR GT30 housing to zip up the heavier (than T28 NS111) GT30 turbine . For us RB25 people it may work but its a bit of a dead end unless you only seek guesses 280-290Kw and its expensive being the Guinea Pig .

That aside the next logical step is to look at the GTX3071R and thats what brought me to this thread , I have to say Micks result is very impressive and its a credit to him putting his money where his mouth is and having the balls to give it a go . Always good when results can be shown because it puts those that follow in the potential picture .

Theres always a but and not to rain on his parade but the question has been asked can we haxe Millenium Falcon performance but starting a little earlier - can't please every bastard all of the time eh Mick ?

Also thanks to Wolverine to giving real world comparisons with his GT3076R car vs the GTX3071R one .

My goal is to have around 300 at the ground but with strong torque from boost starting reasonably early , I doubt I could use anything like 335 and to be truthfull I think even 300 is alot to put down through two 245 width tyres . Anyway I suspect that GTX71mm compressor is too much for me and I'd like to limit my 111K old R33 25 lump to 18 or maybe 20 pounds of boost at most .

Into the theorising . The same old problem of GT30 turbines is still here and frankly the available GTX compressors can't fix it . In the right setup this turbine probably tops out at 550 engine Hp which is great if you want 500 but for less it has its compromises . The fixes in the past have been the cropped turbine (GT2835R) and the TR30Rs 60mm NS111 turbins which Garrett won't gives us . Twin scroll turbine housings achieve something but with one exception they need external wastegate/s . Garrett has a twin scroll twin integral gate GT30R turbine housing for the EVo 10s 4B11T engine but that has a unique Mitsubishi flange pattern . MIck these housings are made in 0.73 and 0.94 AR and its probably possible to have an exhaust manifold made to suit them . It locks you into two exhaust housings but at least I think they can be bored to suit the larger GT35 turbine if you need them ie RB30 implant .

Turbos aside there is no reason for any RB25DET not to drive nicely if it has good electrics injectors and tuning . I don't think it matters if the turbo hanging off it is a GTRS or a GT4294R it should be nice driven sedately .

The important thing with the dryer is when does it want to start pumping and its important to differentiate at this point how far open the throttle is when it does . My experience with the GTRS is that at 3000 revs (expressway) you don't have to moove the hoof very much for the manifold pressure to go positive and sail up any hill in 110k territory . Where rev wise I get full boost I haven't got a clue but then again where to I go at WOT ? My tuner said this turbo is too small and won't hold its 18 pounds and it drops to 15 up high . I really don't know where to go to get the perfect 300Kw just but comfortably turbocharger and the only ones I can think of are the GT2835 Pro S and the grey area GTX3067R . I spoke to some people OS at the VW Vortex site and the Nissanroadracing one and I'm still waiting for some feedback from a feller working for Honeywell over there . I would DEARLY love to get my hands on a 0.63 AR GT30IW turbine housing but I'm not paying the local mob $900 odd dollars for something that may not be usefull long term . If anyone has one of these housing for sale please let me know .

I will link these sites I went to so you can see the compressor map overlays and note the one of the GTX67 wheel and the GT71mm one in 52T (GTRS) . they are actually reasonably similar in the pressure ratio (boost) ranges I'd use and this is why I'm a bit reluctant to go the GTX3067R , more hot side flow potential yes but if it didn't pump enough extra air then where has it got me ?

Its possible that Garrett made the 67X wheel more to suit the GT28 turbine and my gut feeling is that the GT30 could use a little more compressor but not as much as as the 71X .

The packaging issue also with the 71X and beyond is that they use the larger diameter port shrouded T04E comp housing which means spacers and obviously less stealth . For me it would be perfect if Garrett made a 68 or 69mm GTX compressor and used it in the B housing like the GTX2863/2867/3067 turbos use . Ideally it would have a little less lag potential than the 71X wheel and enough just enough capacity to comfortably get to around 300 at the bags .

One last important one , note how at that Perrin GTX comparison article they show the torque/rev potential of these turbochargers and that the modest sized ones make more torque at lower revs . It isn't all about top end .

Cheers A .

Edited February 23, 2013 by discopotato03

[scotty nm35]

I feel the GTX3071 was the pick of the GT30's, now I have upgraded to the GTX3076 I feel the turbine just doesn't have the energy to spin up the oversized compressor. I'm betting the GTX3576 would be the better option.

I am also interested to see the results from the GTX3067, but I doubt it will see much over 300wkw without a gut-full of boost and ethanol.

[wolverine]

Disco why not email streettotrack and get a price on a 0.63 Garrett turbine housing from ATP if you are not keen on using the 0.82 that you already have. I should be more like $400-450 than $900.

Just checked out MTQ/Sonic and they are $583 less whatever arm twisting you can do to them.

[AngryRB]

I feel the GTX3071 was the pick of the GT30's, now I have upgraded to the GTX3076 I feel the turbine just doesn't have the energy to spin up the oversized compressor. I'm betting the GTX3576 would be the better option.

I am also interested to see the results from the GTX3067, but I doubt it will see much over 300wkw without a gut-full of boost and ethanol.

yeah the GTX3076 feels like a big turbo, been doing alot of street driving lately and its slightly annoying the lack of urgency low in the revs,

been considering changing over to a GT3076 with 0.63 external with E85, do you guys think this would keep the top end still , even if more boost is needed?

Edited February 23, 2013 by AngryRBGTX

[discopotato03]

Scotty the 78mm GTX wheel has more like GT40 82mm (56T) capacity and quite a few peple are now saying that there is SFA lag difference between a GTX3576R and a GTX3067R .

The thing the 78mmGTX wheel probably lacks is the T04S 0.70 AR compressor housing like 3582Rs have and the after marked uses the S housing on their GT30 76 hybrids too .

Andy I was hoping someone had a second hand one in good nick .

This was a PM back from NRR .

"The GT30 0.63A/R turbine hsg flows like the GT28 0.86A/R. However the GTX3067R
has a better wheel match compared to the GT2871R so the turbine efficiency is
higher. So you should make more pwr at the same boost level and have very close
to the same boost response. But if you are still concerned about boost response
then try and max out the GT2871R.

Good luck."

Also link from VW Vortex Forum .

http://forums.vwvortex.com/showthread.php?5965002-Performance-differences-between-Garretts-GTX2867R-and-GTX3067R

A .

Edited February 23, 2013 by discopotato03

[wolverine]

0.82 with your 52trim GT3076 and pineapple juice will be fine anyway.

A .63 might have boost control issues but it depends on how hard you want to push it. The Mafia showed what can be done with the smaller housing and water meth. E85 is a whole lot better since it gives you the opportunity to advance timing down low as well as everywhere else. So peak power won't be an issue with either housing.

[Dale FZ1]

0.82 with your 52trim GT3076 and pineapple juice will be fine anyway.

+1

Regardless of whether you're running a 52 or 56T, this combination is one of the best matches around for a RB25. Ethanol is only going to make it better.

If you really want the transient response and lower rpm urge that the GTRS gives, you're basically going to need a RB30 bottom end.