Quote:
Originally Posted by pokeybritches
Awesome! No, I kept the original pulley because 928 Motorsports called me and told me they were concerned I would overspeed the blower. The biggest size they made was several sizes smaller. I didn't have the crank pulley diameter handy and was in the middle of something at work, so I held off. The car had been running very well prior to the rebuild, and I didn't want to have to start tinkering again.
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Josh, according to the calculator on the Vortech website we can spin the V3si to 52k rpm
With a stock crank pulley of 5.185 a shift point of 7500 rpm(we know an M54 won't do that) and a blower pulley of even 3.125 the impeller speed is only just over 44k rpm.
http://www.vortechsuperchargers.com/page.php?id=33511
BTW I went ahead and picked up a 3.33, 3.25 and a 3.125 pulley from a local tuner to try out.
I can confirm that the VF supplied pulleys are identical in bore, key way and depth of snout on both sides of the pulley to the Vortech pulleys.
