Stock Turbos On A 33 Gtr

[wraith_skyline]

Hey guys, i have a 33 GTR with a few mods, just wondering what is the safe amount of boost to push the stock turbos to?? Ihave heard 15psi, and someone else told me 20, then another said 25 and everywhere in between, does anyone have any experience with them in testing or has some documentation about this or is it all just speculation so far

[paulr33]

12psi

[sewid]

12 psi is safe. 15psi would probably go ok for a while but on an older turbo like yours you're likely to see your exhaust wheel explode eventually and end up either inside your cat or as dust inside your engine. End result is you need at least new turbo(s) or a complete rebuild.

[-_-StRyDeR-_-]

stay on 12 and u'l be fine.

[wraith_skyline]

Am going to run about 10 normally, but for high setting i was looking for a bit more, only for special occaisions

[700HP-GTR33]

Am going to run about 10 normally, but for high setting i was looking for a bit more, only for special occaisions

Hi,

Here are my findings on GTR turbo's

Stock turbo's...new...14psi

Stock turbo's...used...100K on odometer" not suspicious"....12psi

Stock turbo's..used...100K on odometer "suspicious"....no more than 10psi.

After market turbo's... new....14psi and above....depending on tune and state of your motor.

Turbo's should be renewed every 100K so this is why I have stated the above.

Don't push your luck at higher boost levels or it might be fatal to the motor.

Hope I have been of some help.

[GT-R32]

So simply pulling the restrictor is not such a good idea?