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Hey folks! I have a 1973 Yamaha TX650 Does anyone here know if the crank and head from my '73 (256 modal?), would work with the rod and piston from a '77 (447 modal). It's my understanding that just the rod and piston was changed in '74 with the 447 modal engines. I'm desperately trying to...

Hey all. Thought I'd pick your brain on something. My xs650 is old and tired.. Never been rebuilt. So I'm thinking, is the XS Performance big bore kit worth spending the money on? Have any of you done this yourself? If so, I'd love to hear your thoughts. Thanks, Ross

Hey all! So, not to long ago I built a Yamaha TX/XS 650. After riding it for a while and having an issue with the right side cylinder not firing real well, my dad and I decided to try re-timing it.. Well now it runs worse!! I noticed that the points rod is a little loosy goosy and the points are...

Hello all, my name's Ross! My buddy, Treitz encouraged me to join the forums.. I'm new to forums and pretty new to vintage bikes. My dad and I just rebuilt a 1973 yamaha xs650, which we discovered it's more a like a "72 and they called 'em "TX" not "XS". So that's cool! My buddy posted the...