Originally Posted by siwillia
For a moment I thought this was a BMSW (Blue Motor Smoke Works). You must really love the bike or you wouldn't put up with it. Is it really that good of a ride? About how long can this motor last? 100,000 miles, or more?
Parking on the centerstand pretty much eliminates the start up smoking, but even then if parked on a surface that leans it a little to the left it may smoke a little. Since the head is on the left side, and the side stand leans it to the left, any oil on the cylinders at shut down may slowly seep past the rings and into the combustion chamber. It does not do it all the time, just occasionally. I think it depends on how the ring gaps are positioned around the pistons, and which pistons are to the left when the engine stops.
Yes, it is that great a ride!
It is not at all unusual for a K engine to go well over 200,000 miles with no major work. One member here was WAY over 300,000 miles, and would undoubtedly put many more on, but the bike was totaled in an accident.
I had an unusual problem, in that a misdiagnosed vacuum leak caused detonation damage to my pistons, so I replaced them at 100,000 miles. There was NO really measurable wear in the engine, even the ring gaps were still within INSTALL tolerances! The crank bearings measured in install tolerances, so the engine went back together with the original bearings in it. There was absolutely no measurable cylinder wear. So basically, if you do not get well over 100,000, probably nearer 200,000, there is something unusual that happens. There will always be the rare early failure, but there have been only two or three including mine in the 5 years I have been on this site.