Gt35r Vs Garrett T04z - Discussion (just Post In This Thread To Create A Database)

[DRIFTER]

Are you talking about turbos on identical engine types because if not then capacity and rpm's and so forth would also play a great roll. Like, for example, the GT35 and T04z function a lot better on stroked Rb26's as they have higher capacity.......close capacity to the 3.0L on which they're meant to run very well on.

I think you also mean: "you could get a properly setup T04z making power nearly as early as a poorly setup GT35...." ????

(the GT35 is smaller than the T04z).

But yeh, I think you could add the size and shape of your intercooler piping and core to the list as well. The more corners and restrictions you have in the how intercooler system from start to finish, the more lag you will have although this would only be very noticeable when you compare the BEST design (similar to V mount) to the absolute WORST design out there!!!

Dump pipe / elbow piece etc behind the turbo would also contribute I guess.

Induction system into turbo inlet.....hi-flow filter vs factory paper element filter etc. Oh, and if you have some cold air or not....partition/cold air box and snorkle etc.

That's just some things I can think off... ;-)

To add to the mix in this thread, I'm going with a GT3040/76r on my stock-stroke GTR. I'm chasing good response and power but am not using twins. I've been wanting to go with a GT35 or T04z for a long time but I want to keep the response.....not to mention that, with the bigger turbos you'd want to be using external gates which don't fall under any of the mod plate codes (something which is a must these days, especially when you drive your car to the track) If I weren't so concerned about the legal side of things (having been to court and all) I'd be going for a nice GT35 setup.

you can get an internally gated rear housing for a 35.

i wouldn't put a 3076 on an rb26

[Brockas]

Ok I've posted this on gtr.co.uk as well, but does anyone know where I can find a T4 split pulse 0.86 rear housing for a GT35??

I don't really care where I have to get it in from.

From all the research I can find, this should be the best compromise between top end and response.

Edited January 12, 2009 by Brockaz

[DCIEVE]

I dont have my laptop with me right now but when I emailed fullrace a few weeks back I'm fairly sure they offered me a t4 .8x ts exh housing to suit my gt35.

Btw you guys are all still neglecting the fact that my boost curve is piss poor, its not a good comparison against a t04z in the mid-range.

[tommis85]

Drifter,

Ah I see. Could you perhaps send me a link to where I could get an internally gated GT35 from? If I could get one then I would seeing that with the 3071 I'd be limiting myself to around 400-450hp or there abouts.

From memory it was up to a GT3240 that you could get internal gate rear housings BUT please, do send me a link to a reliable place to get the internally gated 35 from.

Just out of curiosity, what are your reasons for not putting a GT3071/79 on a stock RB26? They're very popular with the RB25 people and I'm thinking if you bolted the largest one of these up you'd have insane response, probably even better response than with a set of twins......and......if you went for a large rear A/R from 0.82 upwards you should be quite right with flow in top gear down the straight ;-)

....please advise.

Cheers,

Tom

[wrxkilla]

http://www.gcg.com.au/turbo/ViewProduct.aspx?ProductID=28

(here is the internally gated GT35)

I don't think there would be nothing wrong with throwing a GT30 on an RB26. Would be very responsive.

I have just recently taken off an Apexi IHI RX-6 TCW77P25 single turbo off my RB26 (it's rated to 500hp if I recall) it is a small turbine, the rear and outlet looks almost T25. lol I ran 290 aw kw all day every day 18psi with insane response. It done 11.5 @ 124mph and was very quick around QR. I think a GT30 is a good option for someone who won't ever want the 350kw+ power levels...

I am all for sizing your turbo for what you want. Don't go too big for your needs...

Same thing with the T04Z. Would only get it if I wanted and needed over 400kw...

Michael

[wrxkilla]

The GT35 is physically a smaller turbo. It will spool quicker than a T04Z, unless the fabled Z somehow defies the laws of physics. Considering my car is primarily driven on the track, that's exactly what I need.

same here

[tommis85]

Drifter and Michael,

You wouldn't be referring to the GT3540r's that they use on the latest turbo'd falcons? Yes your right Michael I don't want to go for insane horses - I'd rather spend some money on cooling and tyres and suspension once I'm done with the turbo/fuel system upgrade. I'm not planning to pour thousand into the motor to make it go faster and faster - won't help me much at QR if I don't look into some suspension and brake upgrades! I'd probably fly off the first corner after hitting insane speeds with my 800hp!

I'm thinking that because the GTST boys have such good results with the GT30's that a 100cc more for a 2.6L won't render the turbo unusable. You'd just have to make sure that you pick a larger rear housing so that you still have good flow and low back pressure when you're screaming along in 5th ;-) (or 6th for you Michael lol)

Tom

[TiTAN]

Not even 100cc difference, it is more along the lines of ~60cc.

The 3076R would hardly be a bottle neck even with big revs with a .82 rear housing they are good for ~300kw at the wheels, what would be interesting would be a comparison with a 3076R vs 2x 2860-7's (or N1's) both setups being good for very similar power.

[SimonR32]

hah not at all champ, besides, at least I still have my GT-R.

The GT35 is physically a smaller turbo. It will spool quicker than a T04Z, unless the fabled Z somehow defies the laws of physics. Considering my car is primarily driven on the track, that's exactly what I need.

technology > physics

only time will tell hey!!!

it will be good if u can get yours tuned at x-speed so we can overlay the graphs for a direct comparison

[SimonR32]

The 3076R would hardly be a bottle neck even with big revs with a .82 rear housing they are good for ~300kw at the wheels, what would be interesting would be a comparison with a 3076R vs 2x 2860-7's (or N1's) both setups being good for very similar power.

x2, now all we need is someone with gay low mounts to do the right thing and upgrade

[tommis85]

LOL I'll be taking my gay low mounts out soon haha!

Yeh it should be interesting. I'm not aiming for too much power as I want to go to the track regularily with a reliable HP figure....something that can be driven all day every day without over-straining the 13 y/o car.

TiTAN, yes, correct - it is only around 60cc which is jack all really.

I look forward to sharing the results with you. I'm looking at a good all rounder...something that reflects the GTR's original design intent.

You see, I race at QR as well and I had the pleasure of taking a stock GTR out onto the track from which I then gathered that I need more:

- Power on the straight as that is where some of the quick cars caught me again

- Even better braking power at the end of the straight so that you don't end up circumnavigating the globe

- Some better suspension to get rid of some of that roll and bring the car a bit closer to earth

- ......and better oil cooling - the factory system is pathetic.

So yeh, those are some things just from the top of my head. I want to hit all them things rather than just all out power ;-)

Edited January 13, 2009 by tommis85

[Lithium]

technology > physics

Exactly! People seem to think the T04Z is a new fancy pants thing, HKS have done a GREAT job with them and Garrett dealers have done well off the back of it. Before the "HKS T04Z" there were people around running the "Ball Bearing T67" but now suddenly all the Garrett guys call them "T04Z" and drill nice holes in the compressor cover to try and make them a bit more like the HKS T67. I mean T04R. I mean T04Z. Its a dinosaur turbo with not so dinosaur bearings, the GT3582R is a proper GT-series turbo... it has the superior aerodynamics, the same core technology, and the smaller wheels. There is no way the T04Z is going to match its response in an all things being equal situation.

[tommis85]

Michael,

Thanks for sourcing the internally gated GT35 at the top of the page - I've sent that to my tuner to check availability and cost.

Tom

[Brockas]

The T04Z is a dinosaur turbo with not so dinosaur bearings, the GT3582R is a proper GT-series turbo... it has the superior aerodynamics, the same core technology, and the smaller wheels. There is no way the GT3582R is going to match its response in an all things being equal situation.

Wait, what?

So because the GT35 has superior aerodynamics, the same core tech, and smaller wheels, it's going to be lazier than a T04Z? Come again?

[SimonR32]

Exactly! People seem to think the T04Z is a new fancy pants thing, HKS have done a GREAT job with them and Garrett dealers have done well off the back of it. Before the "HKS T04Z" there were people around running the "Ball Bearing T67" but now suddenly all the Garrett guys call them "T04Z" and drill nice holes in the compressor cover to try and make them a bit more like the HKS T67. I mean T04R. I mean T04Z. Its a dinosaur turbo with not so dinosaur bearings, the GT3582R is a proper GT-series turbo... it has the superior aerodynamics, the same core technology, and the smaller wheels. There is no way the GT3582R is going to match its response in an all things being equal situation.

no more saki for u!

[Lithium]

ARGH I meant TO4Z, the TO4Z isn't going to match the response... sorry. It was a gift though, I had to drink it sometime!

[T04GTR]

yes well. ask a few of the people who have a t04z on an xr6 turbo the differance is marginal at worst. just 100kw atw differance.

anyway........ do you want smooth power delivery, or do you want it to be abit more fun with more power that doesnt fall over at 8k.

[DCIEVE]

I dont have my laptop with me right now but when I emailed fullrace a few weeks back I'm fairly sure they offered me a t4 .8x ts exh housing to suit my gt35.

Btw you guys are all still neglecting the fact that my boost curve is piss poor, its not a good comparison against a t04z in the mid-range.

sorry, fr actually offered a 1.06 ts t4 exh housing to suit the gt35

yes well. ask a few of the people who have a t04z on an xr6 turbo the differance is marginal at worst. just 100kw atw differance.

anyway........ do you want smooth power delivery, or do you want it to be abit more fun with more power that doesnt fall over at 8k.

Are you comparing the xr6 gt35r? A ran one of those before switching to a proper gt35r and was roughly 100kw down on where I am now.....

Edited January 13, 2009 by DCIEVE

[DRIFTER]

LOL I'll be taking my gay low mounts out soon haha!

Yeh it should be interesting. I'm not aiming for too much power as I want to go to the track regularily with a reliable HP figure....something that can be driven all day every day without over-straining the 13 y/o car.

TiTAN, yes, correct - it is only around 60cc which is jack all really.

I look forward to sharing the results with you. I'm looking at a good all rounder...something that reflects the GTR's original design intent.

You see, I race at QR as well and I had the pleasure of taking a stock GTR out onto the track from which I then gathered that I need more:

- Power on the straight as that is where some of the quick cars caught me again

- Even better braking power at the end of the straight so that you don't end up circumnavigating the globe

- Some better suspension to get rid of some of that roll and bring the car a bit closer to earth

- ......and better oil cooling - the factory system is pathetic.

So yeh, those are some things just from the top of my head. I want to hit all them things rather than just all out power ;-)

just seams like fair bit of money for not much gain. a 3076 is not going to flow much more than the stockers, wouldn't it be cheaper to put some n1's on it? surely a 3082 would be a minimum for a single don't you think? after driving my own setup, i wouldn't go smaller than a 3582, because it has the same response as the stock turbos and potential for 350-400 rwkw.

P.S this is just my opinion, feel free to disagree.

[R31Nismoid]

ARGH I meant TO4Z, the TO4Z isn't going to match the response... sorry. It was a gift though, I had to drink it sometime!

fixed for ya hehe