All I'm going to say: 46,000 miles with pulley (~67,000 miles on engine), hardly any noticeable increase in vibes, definite increase in engine spool up speed (UR is lightest pulley out there though).
Like always - I'll be sure to tell everyone when my engine explodes in a flaming ball of vibrationally induced death :rolleyes:
Seriously - everyone should know there is a potential for decreased crank and bearing life - but even Judge and Terry will tell you (after they roll there eyes at your stupidity) that they can not predict just what that shortened life will be.
97 SE MTX, KKM, UR UDP, 19# Injectors, SVT TB, SVT UIM, SVT Flywheel, Grizzly Street Clutch, Upgraded motor mounts, mystifed precats, brand new main cat, SVT exhaust sans resonator, 205-55-15 Dunlop SP5000's 154hp / 156 tq before the SVT exhaust, SVT dual honed upper and swapping the mystery main cat for mystery precats. My Profile
| 
