main bearings

I have split the cases on my rapide (first time for me) and am trying to get my head round what’s inside. Both sides of the flywheels have heavy scoring on the nuts. I guess this suggests both main bearing races have ‘walked out’ in the past into the flywheels. Both main bearing races are...

After deciding to do a full rebuild of the engine, I ordered a crank assembly after identifying that there was too much movement in the existing crank assembly. Upon splitting these cases, I stumbled upon the issue below with the bearings. I have been searching the forum to find help, but I...