Stock 1.6......How much boost?
#7
SO PLEASE STOP ASKING QUESTIONS THAT CAN'T BE ANSWERED AND NOT EXPECT TO TAKE IT UP THE ***.
moooooooaaaaaaaaaaaaaaaaaaaaaar booost!
#8
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First boost is a relative term. 10 psi on a GT 2560 does not = 10 psi GT30R. Its better to think of WHP which our blocks tend to start bending rods around 240-250 whp. So safely i would expect 220 whp (although we have had failures this low).
#9
Boost Pope
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Ok, allow me to answer your question honestly and directly: There is no single, straightforward, direct answer.
(That was the answer.)
Too many variables affect the performance of the turbo system, the engine's ability to turn air into power, the engine's ability not to destroy itself, etc.
One of the most important things you need to realize is that there is simply not a fixed relationship between PSI and power, even assuming the engine itself to be a constant.
I could run 50 PSI reliably on a stock bottom end if I simply installed cams with 0.1" lift. I'd probably make about 40 HP.
Conversely, I could break all four pistons in half with only 10 PSI if I tried hard enough.
Even if fuel and ignition timing are absolutely optimal, the exhaust is wide open, etc., you'll still get more power using, say, a GT2860 turbo at 10 PSI than you will out of a GT2554 at 13 PSI. Until you understand why this is, I'd suggest not experimenting to see how much boost your engine will take.
I cannot strongly enough suggest that you obtain this book and read it: Amazon.com: Maximum Boost: Designing, Testing, and Installing Turbocharger Systems (Engineering and Performance) (9780837601601): Corky Bell: Books
#13
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depends on turbo size, two turbos can flow 10psi but each one has a different flow rate, how much air is being pushed in at that psi which raises cylinder pressure = boom. a friend of mine that is on this forum is pushing 16psi with water/meth injection and his **** is running hard. stock 1.6l in a 90'
#14
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depends on turbo size, two turbos can flow 10psi but each one has a different flow rate, how much air is being pushed in at that psi which raises cylinder pressure = boom. a friend of mine that is on this forum is pushing 16psi with water/meth injection and his **** is running hard. stock 1.6l in a 90'
#17
Boost Czar
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It is also said, anything above 12psi regardless of the mass airflow behind it and the rings will fail, however, I have seen no real evidence of this, it's the rule of thumb that FM and BEGi adhere to.
#19
Im an idiot but I have to "get more better knowledge" Learn how to speak before you talk ****!
Thank you Braineack! You seem to be the only person in this forum that answers anything seriously. What people dont realize is that they were once new to this as well, so how am I supposed to learn when you guys just give me smart *** answers and mock me?
Thank you Braineack! You seem to be the only person in this forum that answers anything seriously. What people dont realize is that they were once new to this as well, so how am I supposed to learn when you guys just give me smart *** answers and mock me?