Stock R32 Gtr Turbo's

[Betz]

Heya all,

my boost controller goes on holidays at random intervals and quite often I'm overboosting up to 1.8bar

booted it on the freeway in 4th today to overtake a truck and it over boosted from the time it took to get from 100ks to 160ks, which wasnt that long I spose...

I keep fiddling with the controller, its a GReedy prospec B (analogue) dual stage EBC

while it has been dialed in at .9-1bar it always seems to fluctuate, sometimes working perfectly sometimes overboosting like a mofo.

how long before an exaust turbine falls off?

[R31Nismoid]

How long is a piece of string?

There is no clear-cut answer to a question like that dude.

No-one knows.

[Betz]

How long is a piece of string?

There is no clear-cut answer to a question like that dude.

No-one knows.

thought that might be the case..

I have been advised that its not so much of a problem in lower gears because your always changing and they dont get a great deal of time spinning at those higher rpm's, but was told to beware gunning it on the freeway if its overboosting as it will die pretty fast..

was kinda interested as to just how terminal boosting stock GTR turbs past 1.2 bar or so realy is (ie, do they die realy fast?)

[SLIPPERY]

They could go as soon as you hit full boost. 1.2 bar is definitely not recommended

Other people have had them going for years like that....who knows?

[Betz]

well how it was explained to me (and I cant recall the exact rpm's) was that the stock turbo's spin at like 100 - 170k rpms and then you enter the danger area of 200k+ rpm at over 1bar, I was also told that after 1bar the small stock turbines turbo's will spin an extra 50k rpm or so for every .2bar making upping things a real stain on the relitivly weak ceramic exaust wheel.

does this sound right, or was I fed a heap of bullsh!t?

[rev210]

I had one go at 12psi, it hurt the rings on piston 3 too.

Leave them the hell alone, sure there are people who punt about with 14 psi but, there are lots of people who did that and had to rebuild an Rb26 (not a cheap experience).

Consider low boost a cost saving measure so you can save for replacement GT-SS/N1/'insert steel wheel turbo type here'

[R31Nismoid]

As above

[femno]

or just set your boost controller properly??????

[rev210]

or just set your boost controller properly??????

And by that you mean using the stock one at factory boost, right?

My boost control was as good as you get.

14psi on stock 'old' ceramic GTR turbos = gambling with your motor.

I seem to recall this sort of thread coming up in the distant past with a large number of examples of turbo failure experience poping up in it.

[jantolis]

And by that you mean using the stock one at factory boost, right?

My boost control was as good as you get.

14psi on stock 'old' ceramic GTR turbos = gambling with your motor.

I seem to recall this sort of thread coming up in the distant past with a large number of examples of turbo failure experience poping up in it.

My stock turbos were ran at 14.7psi all day everyday and it has slightly lesss than 100 000k's on it. When i recently changed the turbos over a couple weeks ago they were still in great nick. I've heard of people blowing them as soon as they run 1 bar and others that they never go at 1bar. It's just luck of the draw i guess.

[R31Nismoid]

So basically if you can afford even a basic rebuild + turbos (10k+) = gamble away

If you dont have 10k spare = dont even chance it

[rev210]

My stock turbos were ran at 14.7psi all day everyday and it has slightly lesss than 100 000k's on it. When i recently changed the turbos over a couple weeks ago they were still in great nick. I've heard of people blowing them as soon as they run 1 bar and others that they never go at 1bar. It's just luck of the draw i guess.

so your saying you ran 100,000kms on 1 bar?