25-01-2020, 06:32 PM
Bacon slicer holes were certainly 5/16" BSF originally; I'm not sure about the later rear facing starter (29 - 32). Early mag crankcases also used BSF for the sump bolts, this was changed sometime in 1927, not sure when.
The little locating dowel is essential as it takes the thrust from the starter. Without it, the starter will stand an increased risk of becoming loose. You could fashion one from a piece of steel rod and an electric drill + file if you don't have access to a lathe.
The little locating dowel is essential as it takes the thrust from the starter. Without it, the starter will stand an increased risk of becoming loose. You could fashion one from a piece of steel rod and an electric drill + file if you don't have access to a lathe.