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Mike, what you probably read was that if you fit the smaller UDP, there is no hole in the pulley that lines up with the hole in the crankcase boss to lock the cams.
After saying that, you are not completely cutting off the boss, only trimming it about 5mm to clear the new pulley.
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2001 Boxster S (triple black). Sleeping easier with LN Engineering/Flat 6 IMS upgrade, low temp thermostat & underspeed pulley.
2001 MV Agusta F4.
Last edited by Steve Tinker; 04-29-2012 at 08:32 PM.
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