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275kw To 290kw Cars Needed Advice

Adz2332

By Adz2332,
in Engines & Forced Induction

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Adz2332 Grand Master

Adz2332

Posted
Posted (edited)

Look i know your going to say use the search or look up at the stickied thread.....

But i dont know enough about the turbos to make a choice... Or be able to compare one turbo to another...

Can guys (and girls) with r33 GTSTs that are making around 275 to 290kws answer the questions below for me...

No real chit chat just answers... plz!

Mods i have are

- Power FC and Controller

- FMIC

- POD

- Apexi Boost Controller

- 3Inch Stainless Steel Exhaust, Turbo Back

- Botsch Fuel Pump

Going to buy some 550cc deautchworx injectors.

Now i just need the turbo...

Turbo Name : not just the serial number plz add garrett etc to

Price :

Modifacations : Mods needed to fit in the same low mount position eg oil lines etc etc

Boost Kicks In : Just roughly when the boost comes on

Supporting Mods : You Have That I dont have

RWKWs / PSI : How many rear wheel kws and at what PSI

Price Including Fitting Etc :

Other : If i have missed anything.

Thanks!

Edited by Adz2332
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https://www.sau.com.au/forums/topic/196357-275kw-to-290kw-cars-needed-advice/
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Adz2332 Grand Master

Adz2332

Posted
  • Author
Posted
You already made a thread about this mate with the same question...?

http://www.skylinesaustralia.com/forums/27...ws-t181715.html

True… but only sorta as I was just told things like buy a GT3076… for me not knowing much what the hell is that! What will it do etc etc etc

i just need some black and white answers so i can compare them to what people have actually used.. just sick of worrying bout this decision just want it done and dusted.. plus any workshops i ask just try and flog the stuff they have lying round. sick of it... this way im hoping to compare apples with apples and finally get a decision.

Ionos Community Regular

Ionos

Posted
Posted (edited)

Turbo - get an HKS GT-RS. Around $2.5k new, $1.5k second hand + fitting costs (new will include kit with all components to fit). If you are paying someone to fit, you're looking at around $300 - $500. Should do 270-280rwkw on 18PSI. Boost from 3k or slightly before.

I have an HKS 2535 which is just a little smaller then the GT-RS, and it boosts from around 2.7k, making 250rwkw on 18 PSI.

Supporting mods

- Suspension needs to be up to the task of putting this power down. If you are still running factory 10 year old suspension, you'd be looking at $1.5k - $2k to go for a Sydneykid setup including fitting.

- You may also require a new clutch - $800+ including fitting. (depends on type, $800 would be for basic button type clutch, twin plate etc will obviously cost much more)

I am managing without a Z32 AFM, but you'll need one if you're pushing past 250rwkw. That's another $300 or so.

Re-tune on power FC ~ $200

Then factory in another 25% for other unexpected breakages or expenses. Then consider the risk that you will blow your engine and require a rebuild.

Edited by Ionos
R31Nismoid Grand Master

R31Nismoid

Posted
Posted
True… but only sorta as I was just told things like buy a GT3076… for me not knowing much what the hell is that! What will it do etc etc etc

Did you even read the thread linked then?

It contains all the details, dyno sheets and so on.

If your struggling to understand that and dont think its black and white... then maybe you need to do some more reading :P

There is so much info on this forum if you take the time to look for it.

Adz2332 Grand Master

Adz2332

Posted
  • Author
Posted
Did you even read the thread linked then?

It contains all the details, dyno sheets and so on.

If your struggling to understand that and dont think its black and white... then maybe you need to do some more reading :P

There is so much info on this forum if you take the time to look for it.

yer ok mate.. sorry bout the rant.. just struggle to grasp some stuff on here and there is SOOOO many choices!

Would be nice for some one to go here this is the one u need!

Ionos Community Regular

Ionos

Posted
Posted

Well there you go -

GT-RS - $3000

Injectors - $800

Z32 - $300

Clutch - $800

Suspension - $1500 (optional but highly recommended - what is the point of having all that power if you can't put it down)

Retune - $200

joeyjoejoejuniorshabadoo Grand Master

joeyjoejoejuniorshabadoo

Posted
Posted

Gtrs will keep you in the "safe" range for a stock bottom end and spool up very quickly. With cams you'll probably get to 265 or so...

it is definately the most sau recommended for an un opened rb25

PM-R33 Grand Master

PM-R33

Posted
Posted

+1 for GT-RS, however if you wanna go more towards the 290mark, then maybe a HKS 2835. You may need an engine rebuild some time after pushing this type of power. I'm limiting myself to 270@wheels for the stock bottem end for the time being.

SLY33 Mentor

SLY33

Posted
Posted

If you have a friendly tune and your engine is generally healthy, your unopened motor should be fine pushing out well into the 260+rwkw's. HKS GT2835proS kit! The GT-RS in my opinion will struggle to put out your aimed power without cams and testing the boost on a stock motor. The 2835 will get you up there at around 1.1bar, and as mentioned if your motor is healthy and your tune is good then it should be fine, especially if its just a street car.

price wise, its been too long since i bought mine so make a few calls..

Adz2332 Grand Master

Adz2332

Posted
  • Author
Posted
If you have a friendly tune and your engine is generally healthy, your unopened motor should be fine pushing out well into the 260+rwkw's. HKS GT2835proS kit! The GT-RS in my opinion will struggle to put out your aimed power without cams and testing the boost on a stock motor. The 2835 will get you up there at around 1.1bar, and as mentioned if your motor is healthy and your tune is good then it should be fine, especially if its just a street car.

price wise, its been too long since i bought mine so make a few calls..

i think if im looking at the right one the price for the HKS GT2835proS kit from neugen was around $2200 that sound about right?

Ionos Community Regular

Ionos

Posted
Posted
i think if im looking at the right one the price for the HKS GT2835proS kit from neugen was around $2200 that sound about right?

That price is for the turbo only, you would need to get oil, water lines, gaskets, etc all locally.

If you want the full kit, you're looking at $2900.

http://www.nengun.com/hks/turbo-kit-gt-sports-pro

Adz2332 Grand Master

Adz2332

Posted
  • Author
Posted
That price is for the turbo only, you would need to get oil, water lines, gaskets, etc all locally.

If you want the full kit, you're looking at $2900.

http://www.nengun.com/hks/turbo-kit-gt-sports-pro

ahhh yep cheers for that.. bloody hell cant even look up the turbo right!! grrr... might just hiflow and be happy wid 250 i think.. all to hard!! would i see mayb 260??? whats the max for a hiflow??? response? etc

Ionos Community Regular

Ionos

Posted
Posted
ahhh yep cheers for that.. bloody hell cant even look up the turbo right!! grrr... might just hiflow and be happy wid 250 i think.. all to hard!! would i see mayb 260??? whats the max for a hiflow??? response? etc

Don't have on myself, but my understanding is that the hi-flow is about the same as the 2535, which means 240-250rwkw, or 250-260rwkw with cams. Response would be still good, a little laggier then standard which is mainly due to the steel wheels being heavier then the standard ceramic/nylon combination.

Adz2332 Grand Master

Adz2332

Posted
  • Author
Posted
Don't have on myself, but my understanding is that the hi-flow is about the same as the 2535, which means 240-250rwkw, or 250-260rwkw with cams. Response would be still good, a little laggier then standard which is mainly due to the steel wheels being heavier then the standard ceramic/nylon combination.

ahhh bum dont wanna shell out for cams.... grrrr

tridentt150v Grand Master

tridentt150v

Posted
Posted

Forgive my ignorance, but why would you hiflow when you can get a new KKR/Biagio/hypergear etc for sub $1000.

I know, I know, a hiflow is nearly a new turbo, but its not ALL new, and it is still an older pre '00 design [only in little ways I admit] but you can buy the new turbo, sell the old std unit, and come away with a brand new one for say $5-600.

The age of the hiflow is dead!!! It happened, it was good while it lasted, but there are better options out there now, its time to move on.....

BTW I've got a 3076 WG [brought it off Slide], so I'm not saying go and do this or buy that, just posing the question.

wolverine Grand Master

wolverine

Posted
Posted (edited)

you need to decide exactly what you want. do you really want 270-290 rwkw or is this just a fat sounding number?

if you want virtually stock response and something that is quick to drive around on the street (and cheap) the GCG hi-flow or GT-RS is the no brainer as they are bolt-on. cams will give you another 15-25kw but may shift the boost threshold down lower so the turbo should come on a little earlier which is a whole lot more than it sounds in practice. 250-270rwkw is about where it will top out.

HKS 2835ProS more money more up top less down low (by a small fraction) SLY33 is correct (again imo) the GT-RS will struggle up top.

GT3071 60mm turbine 56 trim comp similar story but a bit of stuffing around getting all the bits together, if this is not your strong suit then the HKS kit is worth paying a premium for. these should make the midrange of your target.

HKS 3037 or GT30 (GT3076 in so many guises just ask 'the mafia') same story as above but shift your expectations higher more ponies less down low. HKS more cost but bolt on kit. these will exceed your target.

the more you want the more it costs (often exponential).

i bet you will be happy with a GT-RS and good tuning.

Edited by wolverine

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