New Turbo Setup

[Room42]

save the new turbo for the new bottom end and it will be a nicer install, feel nicer and the car will still have its nice response in the meantime...

It just occurred to me that I might have to get different dump pipes made up cos of the height difference in the blocks. Since the 30 is almost ready to go in (waiting on parts) I'm thinking now that what you are saying here might be the go. By the time I get the manifold the other parts should be here. They better be cos I ordered them last week.

[Room42]

4800rpm is massive lag, transient response will suck as well, being as you will have to limit it to 7500rpm for reliability that is only a ~2k power band. Just have a look at some videos on youtube to see how laggy it is.

Highly recommend a small highflow until you get everything ready.

You mean like this clip?

[SimonR32]

Yes, that is junk...

[Lithium]

What hotside is the GT3582R going to be? And what manifold etc will you be running?

I honestly don't have an issue with what you are doing, and would consider doing it myself if you weren't needing the "ultimate" balance in the time being. You will need to change a few odd things in between, but if you enter it with your eyes open to the fact you'll be living with quite a lot of lag etc then all good. I've been in an R33 GTS25t running a stock motor with a .82a/r GT3582R, and it was laggy but liveable - and a ridiculous amount of fun to hoon around with

If you were not intending on upgrading the motor in the near future (or ever) then I'd say different, but doing research and buying a turbo, getting it to work purely because the turbo you will end up with doesn't perfectly suit the engine setup you will be running in the interim seems silly to me unless you have money to burn. You will lose money on that turbo, so its basically burning the stuff.

[Room42]

What hotside is the GT3582R going to be? And what manifold etc will you be running?

I honestly don't have an issue with what you are doing, and would consider doing it myself if you weren't needing the "ultimate" balance in the time being. You will need to change a few odd things in between, but if you enter it with your eyes open to the fact you'll be living with quite a lot of lag etc then all good. I've been in an R33 GTS25t running a stock motor with a .82a/r GT3582R, and it was laggy but liveable - and a ridiculous amount of fun to hoon around with

If you were not intending on upgrading the motor in the near future (or ever) then I'd say different, but doing research and buying a turbo, getting it to work purely because the turbo you will end up with doesn't perfectly suit the engine setup you will be running in the interim seems silly to me unless you have money to burn. You will lose money on that turbo, so its basically burning the stuff.

The hotside is .82. I spoke to Kyle at 6boost a week ago and he is making me a manifold and supplying a 50mm wastgate too. I have enough of the other necessary bits to max out the z32. I realize that I wont see much if any boost before 4k ish. I agree with you entirely about matching the turbo for the engine. If I was keeping the stock 25 then I would have got myself a bolt in hypergear turbo to put me around the high 200 rwkw mark. I haven't got money to burn and that's exactly why I got this turbo. Its only a maximum of 11 months and 2 weeks (yes I am counting it down) till its a 3.4 litre. I think that the 35r will be perfect on the car next year with the 3.4 spool kit As I have mentioned I may put the 30 in beforehand as a stock bottom end 3 litre. And before anyone says it, I know that I will be swapping a lot more bits to get the 3.4 working well.

[Room42]

Yes, that is junk...

Hahaha it was a bit of a lame launch. More like a double launch. I've seen a few of your clips on youtube. Nice work man. I saw that you got kicked off the motorplex the first time you went out or something. Have you got back there yet?

[Lithium]

Haha, ironically the turbo is probably too small for a grumpy 3.4

[Room42]

Haha, ironically the turbo is probably too small for a grumpy 3.4

Yeah man definitely short of the engines potential. I actually bought it to suit the rb30. Then I talked the missus into buying me the spool kit for my 32nd birthday. Oh well it'll still be fun to drive

[Rolls]

You mean like this clip?

Pretty much, he had to drop it at 4k in first even then it lagged. If you saw a vid of someone planting it at 3k in 2nd it would be a very long video.

[Room42]

Pretty much, he had to drop it at 4k in first even then it lagged. If you saw a vid of someone planting it at 3k in 2nd it would be a very long video.

It looked like he got off the throttle to me. Could be wrong tho. But yep big turbos have big lag and big power. Little turbos...you get the picture. I'll post a clip when I'm done so we can all see how much lag it has. I'll make a real long clip so we get a very good idea about what it's like. I'll go from idle rpm to see the spool from nothing. I'll spool it in each gear at different rpms and just create as many scenario's as I can that it would be used in. Thanks to my internet provider (unlimited flatout plan) it will all be in hd. I may even burn some rubber, or clutch depending...

[GTScotT]

Haha, ironically the turbo is probably too small for a grumpy 3.4

Lol oh come on, that's what I'd be running.

I want to see a T67 3L

[SimonR32]

Hahaha it was a bit of a lame launch. More like a double launch. I've seen a few of your clips on youtube. Nice work man. I saw that you got kicked off the motorplex the first time you went out or something. Have you got back there yet?

Won't go back unless ANDRA change their ancient rules and/or someone knocks off my record I might go back

[sinistaGTR]

previous experience the best turbo for a street 2.5l has to be the gt3040 with a .63 rear housing, comes on boost quick as and still has the top end.

[Harey]

previous experience the best turbo for a street 2.5l has to be the gt3040 with a .63 rear housing, comes on boost quick as and still has the top end.

I assume you mean for an internally gated setup on the stock manifold, not going to get into that argument there are a million threads on that. For an aftermarket manifold with an external wastegate (which this thread owner is doing) then I reckon Simon with his T67 combo has the best setup.

[Harey]

Hey Rolls I've been speaking to a guy on here who has a very similar setup to what I will have. Reckons he sees 23 psi at 4800 and makes about 420 rhwp.

420rwhp from a GT35 0.82 with 23psi that is terrible. You should be able to make that with a GT30 turbo with 1000rpm better response.

I would put more focus on the supporting mods like a free flowing intake and exhaust and a quality intercooler. These supporting mods will be even more important when you do go 3L+.

[Room42]

420rwhp from a GT35 0.82 with 23psi that is terrible. You should be able to make that with a GT30 turbo with 1000rpm better response.

I would put more focus on the supporting mods like a free flowing intake and exhaust and a quality intercooler. These supporting mods will be even more important when you do go 3L+.

420 was the guys guess. The dyno sheet showed 470 rwhp or something at 26 psi. I think my intercooler will be ok for a while. Although it is bar and plate it has 3 inch ends and the core is 600by300by100. The intercooler piping is only 2.5 inch tho. The intake manifold is still stock but will be swapped out for a greddy sooner or later. I have done about 6 hours of solid reading this morning and from what I gather I can push the absolute crap out of my engine (for limited bursts) with the right tune etc. It will be pushed to the limit of whatever parts are currently on the car. That's probably the fuel pump, a walbro 341. Or the stock coil packs.

[Room42]

Won't go back unless ANDRA change their ancient rules and/or someone knocks off my record I might go back

How close will I get to your record I wonder? I think my car wont like getting flogged down the strip much. The syncro's are a little worn. Wont stop me from taking for a few runs tho.

[Lithium]

Are you going to tune for E85? Give it a hearty dose of boost with that and it should be alright with a good tune

[Room42]

Are you going to tune for E85? Give it a hearty dose of boost with that and it should be alright with a good tune

I would except there isn't E85 available at the pump in Perth yet. I've read that most rb engine failures occur from lack of oil, excess revs and detonation. Hardly anything about breaking internals from power. The first one, oil, is a bit out of my hands. I can only put the best stuff in and add a little extra at the moment. Later I will sort out an oil cooler. I can definitely control my revs and definitely control the det. I'll tune it right to the edge on bp98 but not so it knocks. But obviously with heaps less timing than E85. The tune is there now up to load 17. I just have to sort out loads 18,19 and 20 on the power fc. I've put a tune there but haven't seen it in action yet.

[sinistaGTR]

I assume you mean for an internally gated setup on the stock manifold, not going to get into that argument there are a million threads on that. For an aftermarket manifold with an external wastegate (which this thread owner is doing) then I reckon Simon with his T67 combo has the best setup.

Actually i was talking about the external wastegated version, thats what i had before the internally gated ones for stock set up were even around. And a bush bearing turbo vs a ball bearing setup...you still reckong the t67 is the best, its old now.