Sarumatix

coilpacks + loom?

Looking for coilpacks, harness and brackets.

SOLD

Sad face no thoughts? I've seen some 350rwkw on E85 out of the 8cm housing from Trust, this is where I was aiming in power anyway so that is looking like better candidate than the 12cm now.

I have a full set of King Springs on Stock R34 GT-T shocks. Great condition, i'll post up some pics this weekend. Located S.E. suburbs Melbourne $200

If you already had the head off, might as well just get a neo det head instead. You do want to swap out the exhaust side cam as that thing is rubbish (also fixed by getting det head). I very much doubt you want to touch a stock ECU with that setup,I would suggest considering (if within budget) something more programmable (haltech etc). last I checked running RB25 with nistune was not straight forward (most used z32?). Otherwise i'm interested to see the cost benefit of grinding the DE head, make sure you write every cost down and see what you come out with. keep on with this project!

I'm in a bit of a bind. I had a genuine T67-25g kit including stainless manifold and 48mm ext gate which I bought for a build up on an RB25DE+t which I intend to run on E85 using a Haltech PS2000. The T67 was stolen from my garage. So I have a manifold with a trust flange and no trust turbo. Given that new trust turbos are well outside my budget and 10cm exhaust housing second hand units seem to be extremely rare, I was looking down the tried and tested Kando (kinugawa) path. Kinugawa only sell trust flanges in 8cm and 12cm exhaust housings. I'm fairly sure 8cm would be too restrictive for what i'm building but I note a few people have used the 12cm on RB30s. Am I crazy to consider buying one of these? http://www.ebay.com.au/itm/Turbocharger-T67-25G-TE06H-24V-Monster-MHI-12cm-Triangle-Housing-/291099890987?pt=AU_Car_Parts_Accessories&hash=item43c6e7d52b&_uhb=1 Really appreciate any advice at the moment as i'm really not turbo savvy.

Fantastic news, I have 2 89's that I'm keen to move to club rego come december.

Just what I paid given I don't need it, went for a DET head instead. 100 bucks.

I could be wrong, but I think you need to shim an DET cam as well.. the lift is 2mm different between the DE and DET.

As per topic, surely someone with a front facing plenum in an R34 has their old manifold they don't need? I actually only need the lower half and fuel rail. Pref pickup Victoria.

I have one out of a DE motor if this helps (much lower Lift than the det motor from memory)? I also have an RB26 ex cam (which will need the CAS swapped to run due to differences in the spline)

That's an excellent answer, thanks. I did find the following advice: STATUS, on 29 Apr 2010, said: The rb25 will support mid 300's unopened all day everyday, there are however a handful that fall over valve spring wise. I guess it begs the question, if I don't want to change cams, is there never a reason to go for after market valve springs? e.g. valve springs are a common failure point and should be replaced or valve springs are the first weakest link in the RB25det neo head when making power

Hey Guys, My intention is to put a T67 on a high compression RB25de motor and run E85. Sadly the de head's inlet manifold design was making things too difficult so i've picked up a cheap R34 RB25det head instead. My target is around 300rwkw give or take but really i'm doing this for the fun of it and am not particularly driven to an end point, therefore, i'm quite happy to do what's reasonable (good payoff for reliability or power) whilst trying to keep as much stock as possible. The bottom end is in excellent condition and I was going to leave it completely stock and find out what it is capable of. Before sending the head off to prepare it, it was suggested that I should replace the valve springs. I have found 2 options for NEO heads in Ferrea and Performance Springs. I have done a few searches which haven't really focused on what points really justify replacing the valve springs except that it's just a 'good idea'. Can anyone offer me advise on if it's worthwhile, and if worthwhile, which springs would make sense for my application? Regards, Saru

Do you still have this head?

What state is the 25 motor in now?

It will.

Thread Necro but I am in exactly the same position now. I only really need to change the exhaust camshaft (so no worries about CVT), is there any problem with dropping a 26 exhaust camshaft in? I presume I just need to make sure the CAS has the same spline (ie use the 26 CAS instead of 25). I can't find any information about the springs or valves being different between rb25de and rb25det neos, although the intake runners are definitely narrower on the DE.

Don't bother with the fancy brand name indicator fluids (nismo, LOL, what a ripoff!), just pick up some cheap manometer indicator fluid, it is exactly the same stuff! http://www.bcgroupintl.com/Process/Meriam/Manometers/ManometerFluids.htm

Terrible idea from beginning to end.

Just going back to the discussion about valve springs (as this is one of the first threads on valve springs to show on google ), can anyone confirm if R34 RB25de also has the same valve springs as Rb25det? I know the camshaft has less lift.

Can't remap the stock R34 ECU last time I checked due to the 16bit architecture, to my knowledge nistune is only available on old 8bit ECUs (R32, Z32, S13). You can use a nistuned Z32 ecu with some changes to the loom (At the ecu plug) or by repinning as Clip14 mentioned. How this goes with your auto is anyones guess (and one of the reasons why my gearbox is in the bin and a manual R33 is sitting on the hoist ). Most people don't fark around with autos and I gave up on the idea of playing with the auto because of the lack of information. My best guess is that, if you don't have the tiptronic, then a z32 auto ecu will talk to the auto ecu. I could be wrong and it does, or I could be wrong and it doesnt' talk to any other auto boxes . Good luck? No, not with your power goal. 6-7psi is safe and will not push any of the de hardware outside comfortable operation assuming you have the fuel map tuned properly. The hardware becomes problematic when you go above 7psi. (The stock RB25de neo injectors are to the best of my knowledge 290cc). You want a FMIC in Australia for all applications, the SMIC is never sufficient. I'm sure people will argue about this but my view is that if you have to mount up an intercooler, you are are best of spending that time and money on something that is going to keep your charge air (and hence your potential for detonation) to an absolute minimum. My answer is No, however I have heard lots of different interpretations on this subject. The engine you have is designed to make power without any turbo so it has high compression and is set with cams to make power early. The high compression means you want low boost. The cam lift on the exhaust side is pitiful (http://www.tomei-p.c...haft-specs.html) and has been known to result in up to 1000rpm of turbo lag on its own (on boost after 4000rpm). With the stock setup I would guess that a R34 turbo is about as big as you can go without getting serious (E85, cams, External Gate... etc). On the other hand, because the R34s compression can get the turbo up sooner, it can also result in extra exhaust gas at the top pushing the limits of the little internal gate. You might consider going for something with a big internal gate just to minimise this effect. I haven't seen enough dynos of RB25DE+T neo setups to be confident that the R34 stock turbo wont do the job perfectly for you. Let us know . and then on the other hand, perhaps if you just swapped out the exhaust cam to get some lift and even fiddled with the durations this would cure all of the problems, this is certainly going to put a hole in your budget. I guess you have to remember you are forging into the unknown a little, the RB25de neo is different in a few key ways to all the other RB25s out there and is a great starting point for making power, but a lot of the basic rules of the other engines just doesn't apply in this case. As I mentioned above, even just a high mount turbo kit while fixing some problems, ends up creating others . Feel free to ask more questions, Saru

This project is progressing well. To the point that I'm going to start up a build-up thread. Ended up with a high mount T67 with 45mm external gate so a little bit more extreme than what I started with. oops. Entertaining until I realised that with the turbo up there, now the de throttle body just about hits the turbo.. time for some chopping. I'm trying to find out if the valve springs in an R34 RB25de are the same as the det? given i'm looking at changing the camshaft because of the shitty lift on the exhaust side, do I just go stupid and do the valve springs at the same time? Kinda didn't want to crack the motor :S.

Trying to find a set of preferably ID2000's to suit R34 RB25 NEO running E85.