Turbo general information thread
Jul 15, 2008 | 05:19 PM
#51
Jul 15, 2008 | 05:25 PM
#52
How do I change this text
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From: Behind the TIG welder
yes. thats what we are talking about >> https://ls1tech.com/forums/showthread.php?t=264718
Jul 15, 2008 | 08:15 PM
#53
GFYS and STFU
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From: Here and sometimes there too.
yes. thats what we are talking about >> https://ls1tech.com/forums/showthread.php?t=264718
So if your pushing 15 psi your most likely seeing 5 psi in the manifolds? I was under the impression that it was a pound of restriction for every pound of boost produced.
And someone in your tech thread mentioned that 2:1 ratio is better, why would you want more restriction per lb of boost? I'm probably bot understanding this right, and the fact that my computer screen won't allow me to fully see/read the graph properly is probably hurting my comprehension.
Jul 15, 2008 | 08:27 PM
#54
He means for every pound of boost you see 3lbs in the exhaust pre-turbo. His ratio was 3:1 meaning three times the amount of pressure on the exhaust side vs. the intake. 2:1 doesn't necessarily mean less boost, but less exhaust pressure. Some ways to lower exhaust pressure are a bigger dp, bigger a/r housing, better flowing pipes. Turbine wheel design has a lot to do with it too. Not all are created equal. This just shows why cams with little to no overlap tend to do better with turbos.
Jul 15, 2008 | 08:41 PM
#55
GFYS and STFU
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From: Here and sometimes there too.
He means for every pound of boost you see 3lbs in the exhaust pre-turbo. His ratio was 3:1 meaning three times the amount of pressure on the exhaust side vs. the intake. 2:1 doesn't necessarily mean less boost, but less exhaust pressure. Some ways to lower exhaust pressure are a bigger dp, bigger a/r housing, better flowing pipes. Turbine wheel design has a lot to do with it too. Not all are created equal. This just shows why cams with little to no overlap tend to do better with turbos.
