Originally Posted by 3DChief
While we are talking about heads and valves and pistons, I have a question for the collective wisdom of the group. My '96 DR has 27,000 miles on it. As I was wrapping up a 3 month 8K mile ride this summer, it started smoking on start up after sitting overnight. It will smoke for a few minutes, then the smoke goes away. Blue smoke, definitely oil smoke. It only does it after sitting overnight, if I restart it after fueling or stopping for a few minutes, there's no smoke. It's not using oil that I have noticed and runs normal, not down on power at all. My thoughts are rings or valve seals.
That's a valve guide seal problem. It could be that the valve guide clearance is too large, which means new seals wouldn't last very long.