rephasing

Okay, so it's another of my wacky ideas but has anyone ever considered that it's possible to replace or modify the cam (a rephasing of sorts) so that both cylinders of an XS650 fire at the same time? I've no doubt there would be more vibration this way but big singles have gobs of torque and...

So, I am sure a couple of you have been thinking (or taken part in) about a rephase. I have decided, after all the questions and answers on this thread to jump in. My goal is to be able to have a smoother running cruiser. Something that will take me past my current 4.5k vibratory limit. I just...

So, I have rebuilt the motor and driven it prob about 2k miles. It was my first bike build and first bike ever really ridden. I must say, it's been a blast and tons of fun. With all of these good times came one repeating problem: vibration. I have done a bunch of things to make this beast ride...

does anyone know of anywhere local minnesota or even in the states where i can have my crank pressd apart and buy a cam? thanks

I am planning to do a re-phase on my '73TX650. I will be increasing displacement to 750. Will I need to re-balance if piston weights are the same or very close to stock. Also, I'm curious if anyone has had experience with the valve seat cutting kit that Mikes XS offers. It would appear that it...

This subject keeps popping up in my reading about the venerable XS650. What is it? I know the crank rotates both pistons up and down together, and fire alternately. So is rephasing a change in the crankshaft and camshaft? If so, why? What is the advantage.