Supercharger info

[Dan Zorde]

Thanks for the info so far.  The intent is to generate as much boost as 
possible, which is why I'd like to know how much boost it can put out before it 
self destructs (or the engine), so it definitely won't be running slower.  Now, 
if I run it at same speed (1.25x), would it then be generating (1600/900) x 8 = 
14.2psi ?  I gather that there will be some upper limit to what the unit can 
generate, similar to what the engine can handle.

Dan	dzorde at soanar.com.au

On Tuesday, 11 August, 1998 2:07 PM, Chris Conlon [SMTP:synchris at ricochet.net] 
wrote:
>
> There is a link to "Toyota Superchargers", where you'll see the SC12
> is a 1200cc Roots-type blower. The actual boost pressure will depend
> on the SC displacement, the engine displacement, and the crank vs.
> supercharger drive ratio. Since this unit makes 8 psi (nominal),
> feeding a 1.6l engine, driven 1.25x crank speed, you'd need to drive
> it quite a bit slower to make similar boost on a 900cc engine.
> (900/1600) * 1.25 =  0.70 times crank speed, for example.
>    Chris C.