Table of Contents
This is an old revision of the document!
REF: Engine Mechanicals - Sub-01F
Cam Overview - Advice
Installing XL Cams - From Hammer Performance
(Look around this site - Lots of great tutorials & advice)
Cam Basics - From Mikuni Carburetors
Valve Timing Tutorial - From Comp Cams
Cam Comparisons
W Cams - '04-later version in '91-'03 Engines
Thanks to Aaron Wilson of Hammer Performance for the many contributions to the XLForum.net.
The #2 cam on the left is machined for the timing cup and therefore will work in 91-03 bikes. The #2 cam on the right can only be used in 04+ (crank trigger) bikes, unless someone does the machining.
Even though they went to crank trigger in '04, they continued to ship the bikes with cams that were machined for the timing cup, for awhile. So there are W cams from 04+ bikes floating around out there that can be used in 91-03 models. Always check to be sure. 1)