Thanks guys, smoky burnouts are not something I do on any bikes nowadays Bill, and the thought of doing one on a shaft drive BMW just makes me wonder how expensive it would be if the tailshaft gave up the ghost mid-burnout? I think I'll just take the wheel and tyre to the next swap meet and sell it instead. Yes David, it was the K100RS SE ("Special Edition") that blew up sadly, although it may be rebuildable, I really don't want to take the crankshaft cover off, and find out.......
Yesterday Spotty and I stripped all the ancillaries off the "new" engine, then removed the cam cover:
K100 engine clean 19 May 2024 1 by
Terry Prendergast, on Flickr
Crankshaft cover:
K100 engine clean 19 May 2024 3 by
Terry Prendergast, on Flickr
and dropped the sump pan:
K100 engine clean 19 May 2024 by
Terry Prendergast, on Flickr
All looked good, no metal or gunge in the pan, no movement in the big ends or main bearings, so I'm happy that it's a good one. We turned the engine over and there were no horrible noises. We didn't go as far as removing the head, because a top end gasket set is $500 (AUD) but all the valves opened and closed, so I'm calling it good. We removed the oil filter and oil pickup tube and flushed it out, but only old oil came out, once again, no foreign bodies (well, being German I suppose it is foreign, but you know what I mean.) I gave the inside of the engine a cursory wipe out, and didn't find any crap.
K100 engine clean 19 May 2024 2 by
Terry Prendergast, on Flickr
That was the interesting part of the day (which was wet, cold and generally miserable) the rest we spent vacuuming, brushing, degreasing and cleaning everything in preparation for painting, as it's the standard silver (bare aluminium) engine and needs to be painted a nice glossy black, like the SE's. Still more scrubbing to do next weekend, but after around 6 hours out in the cold, we'd both had enough for the day, so we coated the engine in some fancy foaming degreaser that Spotty had, and hopefully it'll soak into the very pores of the engine and bring it back up like it's been vapor blasted. That's defininitely not gonna happen, but it's a nice thought.
We did drop the spark plugs and various engine bolts in the tiny Amazon ultrasonic cleaner, and I'm constantly impressed with what a great job it does. Anyhoo, more later.