Jump to content
SAU Community

Recommended Posts

Ive just built a 25/30 and want to upgrade the turbo to something a bigger. Currently i have twin T3/T4s and am thinking about something like a GT42 or GT45 or T51r.

Does anyone run any of these turbos on a 25/30 or 26/30? I want to use this on the street but mostly drags.

What revs do they start making boost and when is full boost??

Im not really worried about a bit of lag as i will be running nos to help bring it on boost.

I will have a rev limit around 8000rpm

Link to comment
https://www.sau.com.au/forums/topic/225208-2530-turbo-options/
Share on other sites

I can sell you my T04z setup if you can find me a GT35 (GT35r, GT3540, etc) setup.

All the turbos he mentioned are much bigger than a T04Z, I suspect he is shooting for a different target to what your T04Z would.

Here is a dyno plot from an R34 GTR running a GT4202R on an RB30DET (cammed 26 head):

rb30760whpnq8.jpg

Thanks for that Lithium. It looks like the GT42 will go alright.

Has anone used a GT45 on a 3lt??

And the T51r has been done before. But they do sound awesome.

What are my options from a different brand of turbo. Turbonetics???

Thanks for that Lithium. It looks like the GT42 will go alright.

And the T51r has been done before. But they do sound awesome.

What are my options from a different brand of turbo. Turbonetics???

Yeah the GT4202R is on a full weight R34 GTR that has only done one run down the 1/4 which was far from clean and did a 9 "off the trailer" with an H-pattern box. It will go faster....

What do you mean by "sound awesome", the concept or the actual sound of them?? If you mean the whistle, GT40, GT42, GT45 etcs all have the same kind of sound due to the anti-surge compressor housings :) As alternatives I believe a Turbonetics T76 or GTK1000 are in the same territory, as with Trust T88. All the typical 1000hp beasts. There is a really rare IHI RX8 for sale in NZ at the moment, I believe 1200hp rated... could go for that and be one of very very few. Unfortunately you'll never get a straight out answer on what exactly to expect, as I for one know of no one aside from maybe Indy race cars which have used them.

Here is the R34 with the GT42R doing its run to get an idea of what kind of ride you could be in for:

GTK 1000 could be a go. Is anyone here using one of these??

lots of people in the us using them on 2js should be comparable to a rb30 results wise

though they are pretty new so there wont be thousands of them to look at

  • 2 weeks later...

Im using a t70 which is a garret replica, (couldnt afford the genuine item :) ) Its rated to 700hp, 40psi, externally gated and is of considerable size :D A friend of mine used one on his wrx (shudder) and was getting boost by 4000rpm. So hopefully il spool up around 3000rpm and listen to it whistle all the way up to redline :( When funding allows il upgrade to the t51r.

What other turbos are people running when using a big single???

What power range exactly do you mean?

Check out this site - possibly a bit out of date but has some listed:

http://t04r.com/turbos.php

These days there are neat things like the Garrett GT4088R and GT4094R, and in NZ there was or is a IHI RX8 which is an ~1100hp really flash thing.... they are basically used on indy cars.... that'd be interesting to see on a Skyline haha

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...