Pictures 129, 130, 132, 133 :
Drilling the oil channels is the last process requiring precision. As the crank journals are hollow, there will be no way to drill the various walls without the drill skewing and breaking. To solve that problem, you need to insert a mild steel « martyr » buffer (see picture 133). The buffer must be fixed using Loctite. This trick should enable you to drill the channels easily. LeZap
Drilling the oil channels is the last process requiring precision. As the crank journals are hollow, there will be no way to drill the various walls without the drill skewing and breaking. To solve that problem, you need to insert a mild steel « martyr » buffer (see picture 133). The buffer must be fixed using Loctite. This trick should enable you to drill the channels easily. LeZap