Jump to content
SAU Community

Recommended Posts

Hi all,

I have been researching off and on into what turbo choice to run on my R34 NEO. I have emailed a couple of tuners for advice and keep getting different ideas and power figures. To start this is what I currently have engine wise:

- 3" custom turbo back with race cat

- Power FC

- HKS intake

- Cooling Pro FMIC

- Greedy boost controller

- Split fire coils

- Z32 (not fitted)

The car will be kept to mostly street use with the occasional track day. I am after a responsive mid range (responsive) over top end power. I also want to keep the engine looking as stock as possible, since I get enough attention as it is. So my obvious choice was a high flow. I have read into and asked around about the Hypergear turbos but have seen mixed emotions about them. I have asked several tuners about their thoughts regarding their turbos and have been given negative feedback (I don't want to mention the tuners names on this forum). I have been given a quote from a tuner in Perth for one of their high flows at $1250 and looking at 350-370hp at the wheels when pushing them hard. I also have been looking into the GCG GTS-T's at $1955 with a slightly lower power figures. Both turbos are in my budget range but I'm not sure about pushing a turbo to it's limits to get the power out of them. I am hoping to get close to 450-500hp at the fly. Am I best to wait and save for something like a GTX3071R kit from GCG?

My other mods include:

- Pedders coil overs

- Slotted rotors

- Braided lines

- Brake stopper

- redstuff pads

- Half rollcage weld in

Cheers

Link to comment
https://www.sau.com.au/forums/topic/418730-r34-neo-turbo-choice/
Share on other sites

You can get to 450hp (fly) with a Hypergear highflow of the R34 turbo. Can also stretch that towards 500 with the bigger rear. Good response. Can't imagine that you'd go any other way given your stated aims and desires. Cheaper than everyone else's options, plus they will sell you any later developed upgrade options at very small prices.

HG or Kando etc.... Been proven so many times on here.... Go through the RB25 thread, so many good results from so many big name tuners... The NEO is a killer engine!!'

Is it simply because the worshops I have spoken with are trying to sway me towards their more expensive high flows?

Because they want to sell you one perhaps. HG build identical turbos for every one, the mixed results can only indicate some have better setup and tune. by following their feedbacks people don't initially getting what they want are getting around the target HP on the end. Also appears Stao is very skeptical about WA tuners.

I've been following the HG thread for few years and got one my self doing 280rwkws with no problems. you can get responsive 250rwkws with their R34 high flowed turbo no worries.

Since you've got a OP6 Turbocharger a standard high flow on stock housings can get you about 350rwhp mark with good response. Reference is at:

http://www.skylinesaustralia.com/forums/topic/261613-hypergear-hiflow-service-continued/page__st__6580

Alternatively you can pay bit more for the billet SS1PU high flow which comes with a larger .86 turbine housing and a stronger actuator. Power wise it makes around the 350rwhp mark with excellent response, wide power band and plenty of torque. reference to look at is:

http://www.skylinesa.../page__st__4460

Tuner is very important, I have recommendations in the east but yet to know any on the west. if you have a Nistune chip, I can forward you with a map for reference once work has been done.

No worries, I'm currenlty running a Power FC tho. Just a quick one, with the SS1 how does it compare to the SS1.5 response wise? I wouldn't mind going a little bigger so there is room for improvement later on. And at the same price, I don't really want to be doing things twice when I get more power hungry. Thanks

Dont mind the mixed emotions re the hypergear turbos. A careful read of this forum will tell you ALL turbos are a mixed bag for results.

The most raved about turbo of all time is the garrett GT3076R (3037 spec) and on this forum and all other OZ based forums there are as many good results as their are bad, a real mixed bag. Plenty of ppl making 300kw, plenty making 240 and anywhere in between.

The trick is in setting up your car right and not giving your tuner a nightmare to work with. A neat tidy and functional setup is best. I myself have gone a hypergear and was very careful with my setup. Like others I reaped the rewards.

The best thing for you to do is to consider A: how fast you want the car to go, B: how much power/response will be required to do that and then C: what turbo will achieve that result. The answer to A is entirely up to you, but the answers to B and C are within the dyno and turbo specific threads on this forum.

Good luck!

Because they want to sell you one perhaps. HG build identical turbos for every one,

No, they are not identical.

The HG bearing case is journal, and this is where the ~$500-$700 price difference comes from.

Where the GCG (for example) are ball bearing case. Garrett Ball bearing cores are around the $1000 mark in that frame size, it makes sense +wheels/balancing +machined housings, makes sense they are then more expensive.

Also note that becoming a SAU-NSW member gets you 10% off GCG turbos :thumbsup:

No, they are not identical.

The HG bearing case is journal, and this is where the ~$500-$700 price difference comes from.

Where the GCG (for example) are ball bearing case. Garrett Ball bearing cores are around the $1000 mark in that frame size, it makes sense +wheels/balancing +machined housings, makes sense they are then more expensive.

Also note that becoming a SAU-NSW member gets you 10% off GCG turbos :thumbsup:

Thanks mate, I was wondering what the cost difference was for. What are the advantages of the ball bearing core? GCG quote that their high flows are good for 240-250rwkw at 18-20 psi which is a bit below my goal. If only I lived in NSW I would thanks mate, I've only just moved to Perth.

Have a read around the internet mate - You'll see the pro/cons and then make a call for yourself.

Something else to think about - 500hp (over 300rwkw) on a RB25DET doesn't seen to last forever, users slowly but surely running around those figures are seeing their 15yo motors fail.

So unless you plan for a rebuild, peg the power back a bit to 250-260rwkw/18psi and let it live on like many have for years with whatever turbo you select.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • There's plenty of OEM steering arms that are bolted on. Not in the same fashion/orientation as that one, to be sure, but still. Examples of what I'm thinking of would use holes like the ones that have the downward facing studs on the GTR uprights (down the bottom end, under the driveshaft opening, near the lower balljoint) and bolt a steering arm on using only 2 bolts that would be somewhat similarly in shear as these you're complainig about. I reckon old Holdens did that, and I've never seen a broken one of those.
    • Let's be honest, most of the people designing parts like the above, aren't engineers. Sometimes they come from disciplines that gives them more qualitative feel for design than quantitive, however, plenty of them have just picked up a license to Fusion and started making things. And that's the honest part about the majority of these guys making parts like that, they don't have huge R&D teams and heaps of time or experience working out the numbers on it. Shit, most smaller teams that do have real engineers still roll with "yeah, it should be okay, and does the job, let's make them and just see"...   The smaller guys like KiwiCNC, aren't the likes of Bosch etc with proper engineering procedures, and oversights, and sign off. As such, it's why they can produce a product to market a lot quicker, but it always comes back to, question it all.   I'm still not a fan of that bolt on piece. Why not just machine it all in one go? With the right design it's possible. The only reason I can see is if they want different heights/length for the tie rod to bolt to. And if they have the cncs themselves,they can easily offer that exact feature, and just machine it all in one go. 
    • The roof is wrapped
    • This is how I last did this when I had a master cylinder fail and introduce air. Bleed before first stage, go oh shit through first stage, bleed at end of first stage, go oh shit through second stage, bleed at end of second stage, go oh shit through third stage, bleed at end of third stage, go oh shit through fourth stage, bleed at lunch, go oh shit through fifth stage, bleed at end of fifth stage, go oh shit through sixth stage....you get the idea. It did come good in the end. My Topdon scan tool can bleed the HY51 and V37, but it doesn't have a consult connector and I don't have an R34 to check that on. I think finding a tool in an Australian workshop other than Nissan that can bleed an R34 will be like rocking horse poo. No way will a generic ODB tool do it.
    • Hmm. Perhaps not the same engineers. The OE Nissan engineers did not forsee a future with spacers pushing the tie rod force application further away from the steering arm and creating that torque. The failures are happening since the advent of those things, and some 30 years after they designed the uprights. So latent casting deficiencies, 30+ yrs of wear and tear, + unexpected usage could quite easily = unforeseen failure. Meanwhile, the engineers who are designing the billet CNC or fabricated uprights are also designing, for the same parts makers, the correction tie rod ends. And they are designing and building these with motorsport (or, at the very least, the meth addled antics of drifters) in mind. So I would hope (in fact, I would expect) that their design work included the offset of that steering force. Doesn't mean that it is not totally valid to ask the question of them, before committing $$.
×
×
  • Create New...