Boost On A Stock Turbo.

[r33 chris]

I ran 14 psi once on my stock 33 turbo and it didnt last long.. not a very good situation to be in when it blows.. but i got it high flowed after =]. Anyone know wats the highest psi u can put on a 33 highflowed turb??

i got a gtr pfc, and yeh steve is right vct is over rated, i used 2 run 14 psi on my standard turbo and never had any issue made 205rwkw, and as for the highflow mines making 22 psi atm everyday fine

[DamageInc]

i got a gtr pfc, and yeh steve is right vct is over rated, i used 2 run 14 psi on my standard turbo and never had any issue made 205rwkw, and as for the highflow mines making 22 psi atm everyday fine

BULL SHIT

[r33 chris]

haha thanks man made me feel like someone read it, wooo go e85 lol

[r33 chris]

hey and mitch ur a cock haha

[DamageInc]

hey and mitch ur a cock haha

hahaha , cheers Chrisy Spice

[pixel8r]

seems like everyone knows you shouldn't run lotsa boost through the stock turbo but no one has mentioned why that is...

By stock turbo I'm talking about the R33 and later turbos, including R34, and all turbo stageas.

The below has been blatantly copied from another forum - post by "nismo33" hope I haven't upset anyone by linking to this.

As said above you will need to tell us if the turbo is off an R33 GTR or R33 GTS-t.

In regards to maximum “safe” boost I can give you some ballpark figures:

- For a R33 GTS-t standard turbo 12 psi

- For a R33 GTR turbo 14 psi (or even a little higher)

A lot depends on the condition of the turbo and the application. The figures stated above are when the turbo is running on a RB25 / RB26 respectively, but it should give you a rough idea on what you could set the boost level to. Also what is the condition of the turbo? Any shaft play?

It would be nice if you knew exactly what standard turbo you have. If the turbo came off a R33 GTS-t do you know what year was it? There are slight differences between the series 1 (93-95 model) and series 2 (96-98) GTS-t turbo. The series one can handle a little more boost over the series 2 item. There is also a difference between a standard R33 GTR turbo and a standard R33 GTR N1 specification turbo, with the N1 item being much better.

But in the end application and condition play a major role in determining how much boost you could safely run. It know of people who have run 14 psi in their R33 GTS-t Skyline’s and a week later the turbo has blown, and on the other hand people who have run the same for years without a single problem. I have been running about 12 psi through mine on my R33 GTS-t (with aftermarket intercooler) for over 2 years without any problems… I know of many others who run 14psi (1 bar) through their GTRs with standard turbos without any problems

Are you going to be running a decent intercooler or just a small item? If it’s a small intercooler that is likely to become heat soaked quickly I wouldn’t be running your turbo (if it’s a GTS-t standard turbo) over 10 psi. The ceramic turbine in the GTS-t turbo is sweated/bonded onto the common shaft and because of this doesn’t like too much resistance (boost) or heat.

So there you go. They said it better than I could. Basically ~14psi is the point where the turbo will generate enough heat for the ceramic turbine to disintegrate. Some turbos last longer than others, maybe years, maybe just days...

But why risk it? Upping the boost on a stock ecu will only make it run rich since the stock ecu wont give you an optimal tune. If you want to run more boost, get a highflow unit with steel wheels and some sort of piggyback/replacement ecu - it'll save you a lot of hassle and give you loads more benefit, both in power and fuel economy.

[kb-r33]

BULL SHIT

LOL