I bought a replacement SN93 Paxton ball drive blower from eBay. It came with a 4 rib 4” pulley. The pulley does not stick as far forward to align completely straight with the tensioner and my crank pulley. My crank pulley is 6.75”, so if my math is right to not overspeed the blower at 6k rpm I need a 4.75” blower pulley, my tensioner and crank pulley are 6 rib. Where can i find a replacement pulley? Can it be shimmed to stick out 1/8”-1/4”? What other blowers would use the same pulley other than the ball drive Paxton’s?
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