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Discussion Starter #1
Quick question, how does a bigger or smaller pulley effect my superchargers? I don't want to run too much boost but I want a good kick...Also is anyone familiar with how to hook up the psi gauge?
 

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Bigger crank pulley = more boost. Smaller blower pulley = more boost. You run your boost gauge to a vacuum port after the blower. It is possible to over spin a blower be it a roots or centrifugal. The hot ticket is to get the largest crank pulley as possible, and size the blower pulley to suite your boost.
 

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Discussion Starter #3
Oh I see, well I'm running a 5.0 crank pulley which is 6 inches and both of the roots style superchargers have 4 inch pulleys right now. Is there a way to calculate the psi or do I just have to hook it up and read the intake vacuum pressure after the fact?
 
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