Thread: Do you know when your supercharger runs?...ALWAYS
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Old Aug 14, 2008 | 10:03 PM
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BrianBrave
<--- Huge Horsepower
Joined: Apr 2007
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From: So Cal
Default Re: Do you know when your supercharger runs?...ALWAYS
Originally Posted by tighed1
You will see both vacuum and boost with a "blower". Depends on the load on the engine. In my Chevelle while I'm cruzin' or slowing down I see vacuum. As soon as you mash the gas you see boost.
Look again at this picture




I'm doing 70 MPH which means I'm running around 2200 engine RPM's (below every ones current notion of when the SC clutch kicks in)

With a 185mm crank pulley my crank to SC pulley ratio is 2.5

That means in the above picture - my Supercharger is spinning (if it were engaged) at 3,200 RPM - - and it's not even making 1 LB of boost?

How can that be done with out a bypass valve to bleed off pressure? I tore my SC apart - there are no bypass valves. It's direct linkage.


 
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