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| Forced Induction Discuss topics relating to turbochargers, superchargers, and nitrous oxide systems. |
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#1
06-11-2002, 12:38 PM
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What's the point???
I understand that if you drop the compression ratio within your cylinders you can run more boost therefore creating more horsepower. But I am running into a conceptual block here. If I drop the compression in my cylinders, but then crank up some more boost, aren't I ending up with the same pressure within the cylinder that I had before I dropped compression?!?
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#2
06-11-2002, 12:59 PM
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Nope, here's the deal, (this is a 100% volumetric efficency), a N/A engine pulls in air and compresses it (along with fuel) 10-11-12 (:1) times. When you run boost at 8:1, your commpressing the 6-12 psi 8 times. This would make it seem that you might as well run 3 psi on a cheap setup, but with boost and lower comppresion, the engine isn't working as hard as low boost and higher commpresion.
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#3
06-12-2002, 11:01 PM
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all the rage nowadays is running high compression and lower boost....
the lower compression is just there so that you have a larger window for tuning error
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#4
06-17-2002, 07:25 PM
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I'd personally rather have lower compression and be able to boost higher.
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