further to the crank shaft oilway plugs I managed to source some stainless steel ones that might come out in about 40 years time if anyone is doing an engine overhaul bit more robust than the aluminium ones we have
clarkey
does this not change the dynamic balance of the crankshaft?
Yes, it certainly will. Cleaning out the crud that builds up in crankshafts does, too. Usually for the better, as it was probably balanced before the crud arrived. I have been amazed at how much builds up over time.