Max Boost on Stock RB20DET Turbo?

[Pentaxis]

What is it guys? I've heard that the turbo leaves its efficiency range at about 15-16 lbs.... is this true? I just wanna know what we can krank this freshly swapped ***** up to... =)

-Paul

[Slo_240sx]

yeah its true but unless you want compressor shards in your motor and ceramic peices in your engine bay I wouldn't recommend that to you do that to Freshly swapped ***** Don't go over 10-12 on that stock turbo.

[y3llows14]

At 14 psi, I shot my rb25 ceramic wheel through my exhaust pipe. Wasnt a pleasant site or sound.

[Sil240]

yeah if you want more power, get a RB25 turbo or a VG30 turboI wouldn't go any past 12psi, just in case you get boost creep

Hey does anyone have part #s or any way to tell the difference between a RB20 & a RB25 turbo?A part # on a Rb25 turbo would be very helpful

[NISMO_RB25]

you are probably better off going a different route than the RB25 turbo, because you still are only going to be able to run around 12PSI

[themadscientist]

.9 bar and that is with a good electronic boost controller that can prevent overshoot. Manual boost controller .8 then click it up a notch after the initial drop of the throttle when the tires hook up.

[tjmhillz]

isnt the rb25 stock turbo bigger than the rb20 stock turbo if so shouldnt u be able to run a lil bit more boost than on the rb20 stock turbo??

[JonPowell]

Turbo size has nothing to do with it, its the point at which the glue lets go and the ceramic turbine wheel removes itself from the turbine housing.

14PSI can be run in small amounts but not for extended periods of time.

Nissan opted for a ceramic wheel because of its lighter weight giving you faster spool times, but no positive in the car world is without a negative...and this is no exception.

[blues14]

I am fitting an hks EBC onto my rb20 next week.I am going to run 10psi for low boost and 12psi for high boost.my question is will the power increase of 2psi be worth the risk of blowing my blades?OR is 12psi relatively safe for the turbo?

[JonPowell]

12PSI should be fine...14 is scary!

[Yellow4g63]

I am fitting an hks EBC onto my rb20 next week.I am going to run 10psi for low boost and 12psi for high boost.my question is will the power increase of 2psi be worth the risk of blowing my blades?OR is 12psi relatively safe for the turbo?

Don't forget to set your over boost protection. I had spikes one day at the track. Don't know why, it would spike to 14psi then the over boost kicked in and brought it back to 10psi.

[blues14]

how exactly do you set overboost protection?

[themadscientist]

depands on the boost controller, with some your eyes on the boost gauge IS the protection.

[Yellow4g63]

how exactly do you set overboost protection?

my evc V is a lill diffrent. Might want to look in the manual and it will tell you how to set it. The screen looked like the was the boost setting screen but it was further down into the setting.

[Ricer240sx]

what about S14/S15 Ball bearing T28's?? i was thinking of throwing one of thoes on my RB20...does anyone have any info on thoes and what kinda numbers are kicked out?? or am i better off trolling the sr section for the turbos info?? lol

[klh6686]

an s14/s15 BB t28 won't bolt up to a stock rb20's mani. They use a t25 flange whereas rb20's use a t3.

[Ricer240sx]

that doesnt mean i cant get a flange made up and welded on, or get an aftermarket manifold with one on there

[nwskipro]

max turbo efficiency on stock rb20det turbo its 17.3psi

i am running 14psi safely for about 2 months now

[themadscientist]

the 20 and 25 will blow if you try to run them at 17 lbs, that is 1.2 bar DO NOT DO THAT. turbo go boom, engine get indegestion on peices. Your 14 is about the limit if you want it to last.

[sean8564]

10 to 14 PSI max boost for the stock turbo SAFE.