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

Tomek

By Tomek,
in Engines & Forced Induction

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R31Nismoid
R31Nismoid

No doubt they are animals, but when response counts (if the courses are indeed as tight as above) then you really want -7/GT30 style setups for max response, you'll be faster that way

unique1
unique1

t04z too laggy for any track work unless its a big open circuit event and u like keeping it above 4500rpm all day, even the gt3540 ive seen isnt that much nicer response wise. If u plan any sort of mo

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unique1 Mentor

unique1

Posted
Posted (edited)
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 :)

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

i know you were stirring, i dont think ive seen a non-stirring post from you yet. :)

Yer i agree on brockas figures, he has pretty big cams so that should help alot, i think he has no port work on the head at all from memory? im thinking 575hp on the roller and 625hp or so on the hubber.

Im keen on those precision turbos mentioned, they seem pretty good from what ive read up but cant find prices anywhere and any real solid info on them, like are they watercooled and ballbearing, t4 flanged, twin scroll?

Edited by unique1
R31Nismoid Grand Master

R31Nismoid

Posted
Posted
270 it is then. .1L shouldnt make a huge difference anyways.

It's not even 0.1L

RB26 isn't a true 2600cc. It is less.

IIRC its about 70cc difference RB25 to RB26

85URK Grand Master

85URK

Posted
Posted

Have any of you guys running rb26's in your gtr with either to4z or GT35r got upgraded valves/springs etc in your top end or what have you had to do besides cams in the top end?

just wondering how a stock head will go on a built bottom end with say a GT35R? interested in this thread, coz im tossing up which way to go down the track a bit.

KB240RB Contributor

KB240RB

Posted
Posted

You can get the Billet Turbos in Journal or Ball Bearing. Wide variety of T3 and T4 exhaust housings are available. There are different compressor housing options as well. About 1000$ for the Journal version and 1400$ for the Ball Bearing version i think. Contact a turbo destributor and ask about the Precision Billet 6765. There are a couple being sold on ebay as well.

Brockas Proficient

Brockas

Posted
Posted
Have any of you guys running rb26's in your gtr with either to4z or GT35r got upgraded valves/springs etc in your top end or what have you had to do besides cams in the top end?

just wondering how a stock head will go on a built bottom end with say a GT35R? interested in this thread, coz im tossing up which way to go down the track a bit.

Stock head, with the only work done for clearance of the 10.8mm cams, and upgraded springs.

Valves are standard.

85URK Grand Master

85URK

Posted
Posted
Stock head, with the only work done for clearance of the 10.8mm cams, and upgraded springs.

Valves are standard.

ok. thanks, interesting to know what others have done etc for there set ups, gives others a chance to compare and see where the best place to spend your cash is in an engine build up process.

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

^ plenty of guys running @ 380-400rwkw, factory valves/cams and bit of a tidy up.

More depends on the condition of the head to begin with really, one person might be fine, you might not and vice versa

85URK Grand Master

85URK

Posted
Posted
^ plenty of guys running @ 380-400rwkw, factory valves/cams and bit of a tidy up.

More depends on the condition of the head to begin with really, one person might be fine, you might not and vice versa

yeah totally agree. i would get the head fully rebuilt when it goes back on once i do the engine, just to make sure everything is going to run smoothly.

also what manifolds are people running? has this has much of an affect also? in the future im looking at maybe a GT35R on highmount manifold (most likely 6boost) just slowly planning it all first and what parts i need to aquire.

bigmikespec Veteran

bigmikespec

Posted
Posted
Car run in..

Getting tuned end of this week/ next week ...

Will post results..

Built 26... garrett .84 t04z

Been a long wait... good luck!

  • 2 weeks later...
sky30 Mentor

sky30

Posted
Posted
I'm about to bolt on a T04Z with .81 rear housing, so we will have a direct comparison, on the same dyno with the same engine, between a GT35R and T04Z.

Should be finished by next week.

any results on this?

Brockas Proficient

Brockas

Posted
Posted

Was just about to post here.

No results just yet.

As it needs a complete retune anyway, we've taken the opportunity to install a Power FC d-jetro, and get rid of the AFM's.

Unfortunately, this makes it no longer a 'bolt off bolt on' situation, but the lack of AFM's shouldn't really effect top end much, just driveability.

Power FC arrives next week, hopefully tuned on Thursday/Friday.

Skyhigh Motorsport Apprentice

Skyhigh Motorsport

Posted
Posted

has anyone had both these set-ups on a car before or seen them on cars. im looking at the exact same problem.. cant choose which one

Brockas Proficient

Brockas

Posted
Posted (edited)
has anyone had both these set-ups on a car before or seen them on cars. im looking at the exact same problem.. cant choose which one

Give me a week...

*prays to the gods

573.9

573.9

573.9

Scali's using Natalotto's map as a base for mine, so here's hoping I smash your figure haha

Edited by Brockas
  • 2 weeks later...
jangles Veteran

jangles

Posted
Posted
Was just about to post here.

No results just yet.

As it needs a complete retune anyway, we've taken the opportunity to install a Power FC d-jetro, and get rid of the AFM's.

Unfortunately, this makes it no longer a 'bolt off bolt on' situation, but the lack of AFM's shouldn't really effect top end much, just driveability.

Power FC arrives next week, hopefully tuned on Thursday/Friday.

Hows the results for this coming along?

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