RE: How to stroke an engine?
Dar:
It is true that stroking a crank involves grinding the crank pins on centers with a larger radius, but before grinding the crank pin is welded up on the outer periphery and the sides, then when it is ground it is finished at the original diameter, standard size bearings are used, and if welded properly it is no weaker than it was originally.
When I had my machine shop one of my larger machines was an automatic submerged arc welder just for doing this kind of welding.
Bill.