Well, I now have the engine out of the frame, and the cylinder head and both side cases off. The news isn’t all bad. Most of the engine looks in fine shape internally, as you can see here:
obviously, this engine has been sealed up, and has the low mileage indicated by the odometer (5129).
There was a little bit of sludge in the bottom of the side case on this side, but nothing dramatic. removing the cylinder head, however, revealed a whole ‘nuther picture:
and looking at the cylinder head, we can see why:
if you expand the picture and look closely, you’ll see that the exhaust valve on the left cylinder (again, right side in the picture) is slightly open. so water vapor got in through the exhaust pipe, condensed into a puddle, which then evaporated and rusted the cylinder.
still, nothing here looks unsalvagable. the cylinders are currently soaking in Kroil, hopefully, i can beat the pistons out pretty soon and see what kind of shape the cylinder walls will clean up into.
thanks for reading. more as i discover it!