Originally Posted By John_Kunkel

I would never feel comfortable enlarging a bearing bore with an abrasive tool, too much possibility of grit being impregnated in the soft babbit.



I have made many main bearing spacers, both from cast iron and aluminum, and a couple from bearings.

With the aluminum or bearing you don't hone very much. Maybe .0002-.0003 max. Light pressure and a lot of oil.


That tool posted in the first post doesn't remove metal so I have no idea how MM is doing what they claim with that tool.

Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston