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Experts:
I have a 75 IMSA 3.0 V6 12v with a supercharger I reckon comes from Greg?
However we can only get 0.2 bar from it and really want 0.8+

Can anyone tell me what sizes I need on the crank pulley and the SC to get 0.8 bar?
I have already machined the pulley on the SC from 70mm to 60mm but that does not make much difference. Help...

IMSA.jpg
 

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Do you know if the supercharger is in good working order? They need to be rebuild every so often.
Also, do you have boostleaks? And how does the bypass system work, and does it work?

Many things that impact boost before you try changing pulley diameters. BTW, you can calculate that with the info of the supercharger and current pulley diameters
 
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