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


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Turbo characteristics are gonna be different on the 30 than 25 or 26 setups. what about the hybrids. im throwin up ideas at the moment of ideal setups to maxiumize HP within scope of tracking and some street. and so far ive scaled down to these 2;

GT35R X82 S.S 25/30 Final 3.9

To4Z x106 T.S 26/30 Final 3.5

Oh ps. the TO4Z in the Equation will be the HKS item.

My mate has a T04Z on his 25/30 and I am in the process of putting a GT35R on my 25/30, I guess I should use the same dyno/tuner to keep the intrawebz fanbase happy ;)

The fact that one is 4wd and the other isn't, shouldn't make much a difference?

This will be interesting - do you have a dyno plot in storage somewhere which could be overlayed with the T04Z one to see how much more lag etc you get on the same engine spec?

Any reason for going the T04Z over something like a GT4088R? Shame the GTX-series turbos aren't out for a bit, I have a feeling if Garrett do a GTX3582R T04Zs will lose a bit of their edge

Yup, dyno plots are saved and engine combo isn't changing, so it's literally just going to be a bolt off bolt on situation.

0.84 twin scroll T04Z ordered... will be here Friday, fitted Monday, tuned Wednesday.

My mate has a T04Z on his 25/30 and I am in the process of putting a GT35R on my 25/30, I guess I should use the same dyno/tuner to keep the intrawebz fanbase happy :D

The fact that one is 4wd and the other isn't, shouldn't make much a difference?

um Drivability wise sure it would, but i think main emphisis on power output wont be much different if the 4wd has only 2wd engaged at time time, and they both share the same Ratios.

Id be keen to see the results from both.. and ofc. supporting mods also.

um Drivability wise sure it would, but i think main emphisis on power output wont be much different if the 4wd has only 2wd engaged at time time, and they both share the same Ratios.

Id be keen to see the results from both.. and ofc. supporting mods also.

Obviously drivability would be significantly different! lol

Maybe it won't be so direct a comparison then.. my final drive ratio is 3.9:1 whereas I believe his is stock gts4 (4.3:1?).

He is also running HUGE cams (280s & 10.5 lift I think) whereas I'm not :wave:

what did it make bubba? mine on 18psi has made 585rwhp with the 0.81 t04z on 98 pump fuel (Not on a happy hubber either lol).

Brockas gt35 isnt exactly the same as what everyone else is running so dont know if his comparision is gonna be that clear, he is using the t4 housing on the 35 which surely effects results.

But none the less will be good to see the difference.

Edited by unique1
what did it make bubba? mine on 18psi has made 585rwhp with the 0.81 t04z on 98 pump fuel (Not on a happy hubber either lol).

Brockas gt35 isnt exactly the same as what everyone else is running so dont know if his comparision is gonna be that clear, he is using the t4 housing on the 35 which surely effects results.

But none the less will be good to see the difference.

yeah but 70deg of timing helps with power :P

Anybody here ever thought of switching to a Precision Billet 6765? Its a 67mm like the T04Z but has a redesigned billet compressor wheel which is lighter and made more aggressive to outflow any of the old 67mm turbos. A guy here in the states has one on a RB26 and he put down 763whp @ 32psi. Some 2JZ guys have it putting down 800+whp and one Evo guy i know of did 900+hp @ like 40psi with it. I didnt believe the 900hp thing till he ran it down the track and trapped 153mph.

yeah but 70deg of timing helps with power :happy:

lol just because yours couldnt even crack 575hp on 25psi+ boost :P Put good quality bits in the motor and some good headwork/big cams and you will be suprised. Wait till its in a car again and new ecu with no misfire problems and then things will be alot different.

haha thought that might stir you up...

mine went 574 @ 24psi thank you very much!!!

plus it also went 560rwhp at 20psi but yoda backed off timing so it was nice and safe :down:

brockas should make anywhere between 560-600rwhp i would imagine, hopefully 573.9 so I can give him shit for years to come :)

Edited by Cerbera

Mikes gts4 made 580hp at all 4 hubs on only 1.3bar as Sean didn't want to lean on it right away. Pretty sure there's no headwork other than what was required to fit the huge cams.

All I can say is 3L + T04Z + 32GTS4 = insane!

cerbera.. who is this yoda you speak of?

I will need my 26 to4z tuned shortly and trying to decide who i am going to get to tune it.. was previously tuned by mick at ovaboost

Have you had problems with Mick's tuning in the past? From my experience he is the bomb and wouldnt think you would need to change unless something went wrong. But then again, there is no harm in trying someone else!

Looking forward to results Brocka's.

cerbera.. who is this yoda you speak of?

I will need my 26 to4z tuned shortly and trying to decide who i am going to get to tune it.. was previously tuned by mick at ovaboost

i have not used mick, but i have been there when he has tuned a few mates cars and i thought he did a good job (dyno is a bit ancient nowdays haha) and i have only heard good things about his tuning ability

yoda = ant scali at xspeed

if your looking for suggestions i would suggest ant @ xspeed or sean @ allstar!

ant has tuned all my cars in the past and done a great job, sean did the run in tune for my gtr and is going to be the one tuning my new car :thumbsup:

Edited by Cerbera

best results seem to be from 270/272 types with between 10.2 and 10.8 lift

edit: just realised your running a rb25 woops sorry, the ones above are for rb26

Edited by Cerbera

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