Anyone used these? It looks like the RR pulleys are a lost cause as far as actually getting one...these look nice but I've never seen one in person. Anyone have an opinion?

928 Motorsports - Porsche® Performance Parts - 8-Rib Pulleys for ProCharger P1 and D1 series Superchargers with Sur-Grip® - Porsche® 928 World record Holder 216.63537 mph

I have a 3.35" pulley on my P1sc now. How much smaller do y'all think I should go to pick up a few psi? 3.20" or smaller?

 

They look damn nice, would have to see what other sizes they have. The one on my D1 now is around 4"... I would be scared to see what the 2.9" they have listed there would do. Surprised they offer one that small in a 6 rib also..

 

This is really cool though. Tells you the max RPM for each blower and has a calculator for determining what size pulley to choose and how it affects everything.


928 Motorsports® Services - Supercharger and Pulley Frequently Asked Questions - Porsche® 928 World record Holder 216.63537 mph

 

I guess l update what they look like when mine gets here. Ordered a 3.20" 6 rib with their coating for my Procharger.

 

Nice. Let us know, might be hitting them up in the future.


You ever plan to do an 8 rib swap?? Do they make a kit for Dodge??

 

I'm planning on a whole new motor with a big Whipple strapped to a 426.

 

Well that works also! LOL