My R34 Gtr Tuned Yesterday At Dart Automotive

[SiR_RB]

heat and turbine speed kills cermaic wheels

[sucram]

Keep going deeper

Nothing is ever fine, even if you have a fresh set up. Shit happens.

My main point is, the guy has taken it to a tuner, good chance a reputable one and since I havent had personal experience with them its hard to be sure.

They have probably done a fair few and probably a whole heap of other cars with similar turbos and is aware that they are ceramic. This isnt the mid 90's

where info and experience is limited. We have thousands of GTR's in oz now.

The guy is happy with the work, even notes that hes getting better highway mileage. Then all this touting that hes running too much boost and scaring

the poor bugger into turning it down. I doubt any of these guys were there. All they are doing is touting shit that they read/their mate did/etc. So straight

up giving flack to this tuner because he decides thats what the engine likes and he can make it live.

[R31Nismoid]

No one is scaring anyone by giving the facts and potential dangers, better to have the information & make an informed decision - than not at all. It's just comes down to a calculated choice as follows.

Can you afford the rebuild?

If you can, carry on.

If you can't, then play it safe.

What one deems to be safe - arguable. There is enough evidence from users personal experience to make a reasonably informed "idea" of safe - if you wish.

Of course "shit happens", thats life. But you can reduce the risk of shit "happening", is all people are saying.

There was poor bloke recently who lost a forged motor by putting stock turbos back on as he didn't have the cash for nonceramic at the time. Running 1bar too. That's the stuff that is really shit and really hate reading

[ido09s]

Are you sure it was Jim who did this work? lol

It doesnt sound like Jim at all..... inflated figures, boost levels being to high.....

This does not sound like Jim to me at all

[Rolls]

As I said via pm tho, that much boost is asking for a dead motor for the sake of 20rwkw, I strongly urge you to consider lowering the boost to a safer level for longevity of turbos, and in turn your motor

dead motor due to the turbos grenading? or dead motor from that much torque?

[MrStabby]

Then all this touting that hes running too much boost and scaring the poor bugger into turning it down. I doubt any of these guys were there. All they are doing is touting shit that they read/their mate did/etc.

We are pointing out that he's running a high risk, its up to him to accept that risk or not. There is plenty of evidence that these turbos fail quickly at that boost, and quite a few instances where turbo failure has destroyed the engine. It makes a very poor cost/benefit trade off for most people.

None of us were there, but what's the relevance of that? We are taking OP at his word, and assuming that he understood what he was told. If we dont make those assumptions there's no point in responding.

FWIW, my stock GTR turbos failed at 13psi. Fortunately, no motor damage.

This is a community, and as such we should look out for each other. If I were in OP's shoes, i'd want to know about the risk.

[livewire]

ido09s it was definatly Jim. There are only 3 guys there and Jim does the tuning. I called him a few times while the car was being tuned. And yes, he did say the dyno reading on paper was 20kw less than actual power figure. Feel free to call him and ask

[R31Nismoid]

dead motor due to the turbos grenading? or dead motor from that much torque?

Turbo failure. Rear turbo fails usually, ceramic dust/particles end up scatterd across the piston top/eating up ringlands and on occasion some marks on the valves.

Not really sure how torque/stock turbos is going to kill a stock RB26

[Rolls]

Not really sure how torque/stock turbos is going to kill a stock RB26

That's what I thought, was just checking.

[DVS JEZ]

My car made 350kw....

Well the dyno sheet says 296kw but

If ur car makes 261 on the dyno thats what u tell everyone it makes. 4kw max round up so u made 265 and i made 300kw

Glad ur happy with the tune he gave u.

REMEMBER.its just a number. There is ALOT of variable when comparing different dyno's.

Like comparing apples and oranges

[Thelen]

Yea for reasons in this thread this is why I'm resisting doing anything to my 32 until I can afford a rebuild.

Good result, anything over 250kw is a bucket of fun

[livewire]

I'm not trying to bullshit power figures, I'm simply going off what I was told at Dart and I don't think Jim would be bullshitting either. Whatever the actual power output is I'm happy with at the moment... I'm not looking for a 20kw cock extension like some people do.

[DVS JEZ]

I'm not looking for a 20kw cock extension like some people do.

Haha u hit the nail on the head.

Doesnt make sense why a tuning shop woul have there dyno calibrated 20kw lower than it should be then tell customers.

I use a mainline aswell as Rondofj stated and unlike dyno dynamics u cant fudge the figures as easy. Like cheating with inlet temps etc.

[Global_Warmer]

Who gives a f**k about all these replies!? As long as your happy and confident in your tuner then who cares what everyone else thinks?

You and I both know that if the thing blows up tomorrow, that your in a pretty good financial position to get it fixed anyhow

Bring it around on the weekend. I wanna go for a spin!!

[NISSAN GTR]

I'm not trying to bullshit power figures, I'm simply going off what I was told at Dart and I don't think Jim would be bullshitting either. Whatever the actual power output is I'm happy with at the moment... I'm not looking for a 20kw cock extension like some people do.

Your tune is perfectly fine , my stock turbos have been running 1.2 Bar near 300KWs , Tuned by a highly respected tuner in S.A 6 years ago still going strong , enjoy it !!!!!

[paulr33]

yeah and thats the exact key to the issue

if you can afford it and are willing to wear the risk go for it

many have run that boost and survived

and im sure there are equally as many who have ran that boost and failed

my car is the same

GTST with std turbo and running 0.85kgcm2 for years+++

many have failed at this level and let go taking the motor with it

im aware of the risk and if it happens, it happens

the key is, can you afford it and wear the risk

if so enjoy

if no, turn boost down as precaution

[livewire]

Yeah, you're probably right global warmer lol. I'll come round Sunday if you're gonna be home? You gonna have your car back for next Sunday?

Nissan gtr thanks for the vote of confidence... seems like you've done well and proof that it is clearly possible. To back that up and those questioning the power output with standard turbos, when calling around and talking to a few reputable tuners in Sydney, quite a few said that I could see anywhere up to 290/300kw including the guys at advan who someone mentioned earlier. Thanks for all the input positive or negative none the less

[w34ponGT]

Basically, trust your tuner, hes probably done a lot more cars for a lot longer then keyboard tuners on here

haha good call

[Rolls]

haha good call

Doesn't mean you should trust him just because he's done more than you. Some people might have never tuned a car but they can know better, it happens more often than you might think.

[w34ponGT]

well ok i got a little dilemma with tuners theories. 1 tuner tells me on standard bottom end with cams and a big turbo to be safe you need you retard the timing and set the cams to 0 and the boost is quiet laggy

then i talk to another tuner and he goes, if you advance the timing and up the cam timing (or whatever it is) but control the torque you can have full boost by 2800rpm

p.s this isnt on a rb26 but just an example???