Max boost on 10:5 compression
09-23-2009, 05:13 PM
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Max boost on 10:5 compression
i have a 2002 s2ooo with the HP performance turbo kit running 10:5 compression(due to a mil hg). I previously made 380whp with a .48ar 50 trim. on 12psi i just upgraded to a precision sc62/62 .82ar and was wondering what the maximum amount of boost i could run safely on 10:1 compression motor is ? 
09-23-2009, 06:43 PM
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Originally Posted by Hpturbos2k,Sep 23 2009, 10:26 PM
im talking on pump gas.. and safely
09-23-2009, 07:24 PM
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no way dude ^^^^ you can't make 25lbs of boost on pump gas 91. He's gonna blow his motor!!! To make it worse... he's running 10:1 compression... thats just gonna narrow down his window of opportunity with safer tuning.
most tuners won't go above 19lbs of boost even with 9:1 compression ratio... Why??? because its not safe and all it takes is one bad tank of gas to blow up the motor
I produce 540 at 19lbs of boost on pump gas. I'm running 9:1 and methanol injection.
and i'm pretty much at the limit of how much power i could make using pump gas Safely.
most tuners won't go above 19lbs of boost even with 9:1 compression ratio... Why??? because its not safe and all it takes is one bad tank of gas to blow up the motor
I produce 540 at 19lbs of boost on pump gas. I'm running 9:1 and methanol injection.
and i'm pretty much at the limit of how much power i could make using pump gas Safely.
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09-23-2009, 07:25 PM
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Thanks I'm saying how much boost is safe for 10:1 compression. I know on stock compression you can only run max 10psi depending on tune. Just wondering with a good tune is somthing like 18 psi safe??
09-23-2009, 07:32 PM
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Originally Posted by Hpturbos2k,Sep 23 2009, 07:25 PM
Thanks I'm saying how much boost is safe for 10:1 compression. I know on stock compression you can only run max 10psi depending on tune. Just wondering with a good tune is somthing like 18 psi safe??
09-23-2009, 07:38 PM
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Originally Posted by DeadZero,Sep 23 2009, 07:32 PM
you would have to wait until the real turbo experts chime in on this. i would like to say 18lbs as well with a bad ass tuner. but the 10:1 compression still lowers the liability vs 9:1 compression would offer while still being safe with pump gas. I'm no expert but i don't wanna see another blown s2k due to failed tuning.