Hey hey. I have a pleul bearing damage on my 620 ́er LC4 (1996) or this one brass ring sitting on the left and right side of the camp, one of them has disassembled. The cylinder looks still good and has only a little run in and has no scratches etc. (with about 9500 km) but the piston is totally on the a…. the very nice Riefen got off and from the bottom it looks like it was worked with a grain and hammer strokes. The oil ran through the simmering into the ignition and to the vent The brass chips are distributed everywhere, from transmission to control chain… Now the question is: “New” (used) engine if I get one or new parts. This is gasket set for engine, new piston, Simmerring and a new bearing. Of course I have to try to wash the chips out well everywhere. Or: I would get an Lc4 660 ́ engine with year 2004 for about 800€, only then is the question if it fits also in the 620s with year 1996 from me??? Would I be happy If someone could help me.