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Old Aug 25, 2004 | 08:39 PM
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Default Max boost pressure

What is the general max boost pressure a standard internals ( jap WRX wagon ) can run with no major risk of blowing something? All supporting mods for fuel,air, cooling etc. in place. ( not FMIC though, big TMIC ). Ignoring the fuel cut limit too for interest.
Is 20 psi or 22 psi sustainable safely?

Thanks
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Old Aug 25, 2004 | 08:41 PM
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From: St.helens!!!!
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you can tell us hen you blow it up!
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Old Aug 25, 2004 | 08:44 PM
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GRIN!!!!

That's why I am checking the big guys comments !! So I don't!
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Old Aug 25, 2004 | 08:49 PM
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From: St.helens!!!!
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your one of the biggest guys i know!!!!!!!!!!!
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Old Aug 25, 2004 | 09:12 PM
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Hmmm

not sure how to take that, .......
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Old Aug 25, 2004 | 11:54 PM
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Every engine is different, dude. People have run std internals upto and beyond 1.7Bar........but not all their engines have lasted.
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Old Aug 26, 2004 | 01:15 PM
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I run 1.4 odd bar on a large TMIC with standard UK internals (all safety devices in place, precautions taken etc.) Car runs Apexi Power FC.

No problems.

never see more than one green on the knocklink.

Much more boost on a top mount would be verging on dangerous, I think, unless you've done some SERIOUS work.

I'd be worried about the transmission before the engine to be honest.

Last edited by RICH WILD; Aug 26, 2004 at 01:20 PM.
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