by Bill Jurgenson » Tue Dec 02, 2008 12:08 am
I don't know what site that might be. I do know that the XTZ engine used in the Skorpion and the SZR engine have the same alternator. They are basically the same engine. The left side cover is exactly the same part, the rotor is the same part.
I have both, have changed parts on both and interchanged parts on both.
The XT, srx, TT, i.e. the 4-valve engines have a different , heavier rotor and a different alternator, altho the E-start XT (the last one) does have the same crankcase and side cover as the XTZ/Teneré. The alternator for these does fit the bolt pattern of the XTZ/SZR sidecover, but it does not fit into the rotor. These are probably the differences you are noting.
The Raptor 660 parts do not fit.
The only major difference getween the XTZ and SZR engines are the transmission mainshaft and the 1st gear cog.
Otherwise, there are subtle differences in quality I (not only I) find between the made-in-Italy Belgarda version and the japanese XTZ in the MZ.