Funny you should bring that up . . . Some weeks before going to the track I was working to fix an issue with my car's acceleration cutting out near top RPM. I thought it was related to a starving for fuel problem and I THOUGHT I had remedied it when I turned up the fuel pressure.

When I got the car on the track the other day I noticed the same problem once. Then after the pulley grenaded and I got home and started thinking about everything, I wondered if maybe the pulley clutch was slipping at high RPMs thereby cutting off my boost. That, of course, would also cause friction heat and probably ultimately lead to the pulley failure. I think you've done some pretty good detective work there Anthony! Maybe the recommended gap is too large for that smaller pulley spinning at higher RPM. The faster you try to spin that supercharger the more load / torque it will take to spin it. At some point it will overwhelm the clutch. Probably need to install the pulley with less (minimal) gap like Doc discussed. How else would you able to increase the friction between the pulley plate and the clutch??

I remember that Khang had told me he had a friction coating that he could apply to the pulley (the grooved part of the pulley) to increase grip on the belt and help eliminate slippage of the belt. I wonder if that (or something like that) needs to be applied to the backing plate to improve the grip of the clutch??

So . . . we have new things to think about. What do you guys think??