Lepperfish Posted June 12, 2003 Share Posted June 12, 2003 HOw much boost will an RB25 take on stock internals ? 18 psi ? :shake: :burnout: Link to comment https://www.sau.com.au/forums/topic/18131-max-boost-on-an-rb25/ Share on other sites More sharing options...
skyzerr33 Posted June 12, 2003 Share Posted June 12, 2003 18psi is the general figure for the internals and 14psi b4 the stock turbo goes boom Link to comment https://www.sau.com.au/forums/topic/18131-max-boost-on-an-rb25/#findComment-378149 Share on other sites More sharing options...
Nismo_R33 Posted June 13, 2003 Share Posted June 13, 2003 Is different turbo's 18psi different? The 18psi is for High flow stock one or Aftermarket? Link to comment https://www.sau.com.au/forums/topic/18131-max-boost-on-an-rb25/#findComment-378989 Share on other sites More sharing options...
Guest INASNT Posted June 14, 2003 Share Posted June 14, 2003 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. Link to comment https://www.sau.com.au/forums/topic/18131-max-boost-on-an-rb25/#findComment-380692 Share on other sites More sharing options...
Sydneykid Posted June 14, 2003 Share Posted June 14, 2003 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 Link to comment https://www.sau.com.au/forums/topic/18131-max-boost-on-an-rb25/#findComment-381406 Share on other sites More sharing options...
R31Nismoid Posted June 15, 2003 Share Posted June 15, 2003 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 Link to comment https://www.sau.com.au/forums/topic/18131-max-boost-on-an-rb25/#findComment-382222 Share on other sites More sharing options...
Mr Rb20 Posted June 15, 2003 Share Posted June 15, 2003 Same question with the RB20 ?? How much boost can it take engine/turbo ?? Link to comment https://www.sau.com.au/forums/topic/18131-max-boost-on-an-rb25/#findComment-382752 Share on other sites More sharing options...
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