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Forced Induction Forum Sponsored by Active Autowerke
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Old 04-24-2013, 04:43 PM   #1
MalibuMafiaV
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Vortech superchargers and pulley sizes

Anyone know of a calculator to determine the exact psi you'd get from each size of the different pulleys?. There's a calculator to determine the impeller speed which I suppose I could then sort of figure out the psi. But I'm wondering if every other pulley on our cars change the amount as well. I've completely forgotten the size I originally started from and only remember the size I switched to which is 2.87.
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Old 04-29-2013, 09:30 AM   #2
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No one?
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Old 04-29-2013, 12:18 PM   #3
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Id like to figure this out aswell
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Old 04-29-2013, 11:34 PM   #4
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I'm pretty sure if you call Vortech they should have all of the answers?
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Old 04-30-2013, 02:45 PM   #5
MalibuMafiaV
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Quote:
Originally Posted by Viper3812 View Post
I'm pretty sure if you call Vortech they should have all of the answers?
They do mostly. But I'd like to know if anyone else has experience with any of this etc.
I'm going to run 2 different sizes on my car and take a video of what the boost is so it helps people hopefully in the future.
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Old 04-30-2013, 10:28 PM   #6
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boost is just a measure of air not getting into the engine.

obviously vortech nor anyone can tell you what the number will be for a given pulley size becuase its engine setup dependent. I have seen 5-7 psi differences between exact same pulley configs between different exhaust, intake changes.

why not measure whp and determine the pulley you want from there instead of an arbitrary boost number?
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Old 05-01-2013, 01:32 PM   #7
MalibuMafiaV
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Originally Posted by str8dum1 View Post
boost is just a measure of air not getting into the engine.

obviously vortech nor anyone can tell you what the number will be for a given pulley size becuase its engine setup dependent. I have seen 5-7 psi differences between exact same pulley configs between different exhaust, intake changes.

why not measure whp and determine the pulley you want from there instead of an arbitrary boost number?
I will be doing that shortly after I finish installing my new gauges.
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