Max boost on an RB25

[Lepperfish]

HOw much boost will an RB25 take on stock internals ?

18 psi ? :shake: :burnout:

[skyzerr33]

18psi is the general figure for the internals and 14psi b4 the stock turbo goes boom

[Nismo_R33]

Is different turbo's 18psi different?

The 18psi is for High flow stock one or Aftermarket?

[Guest INASNT]

Originally posted by Nismo_R33

Is different turbo's 18psi different?  

The 18psi is for High flow stock one or Aftermarket?

its makes no difference, pressure is pressure, just that a bigger turbo can produce more power at the same pressure than a smaller turbo.

[Sydneykid]

Hi guys we find the limit is combustion pressure related rather than boost. You can destroy an RB25's standard internals at 1 bar with 500 bhp much easier than you can at 1.5 bar and 400 bhp. Boost is pretty much irrelevant.

Stick to less than 45 lbs of air per minute and you are pretty safe on a well tuned engine. I have seen badly tuned engines kill themsleves at way less than that.

Hope that helps

[R31Nismoid]

Originally posted by INASNT

its makes no difference, pressure is pressure, just that a bigger turbo can produce more power at the same pressure than a smaller turbo.

because of a higher airflow with a bigger turbo... which makes the PSI irrelevant as SydneyKid has stated.

It's about how much air you can get in there, not the level of PSI

[Mr Rb20]

Same question with the RB20 ??

How much boost can it take engine/turbo ??