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Today I was talking with a friend and he mentioned that there are some engine builders that take off the coating of new rod bearings prior to assembly, using ultra fine synthetic pads similar to a kitchen scrubber (my description). He said it was controversial in that some believe in the step and others dont. Since this is another news story to me, does anyone here have thoughts on the subject?
Mike, located in the Siskiyou mountains, Southern, OR 292 powered 1946 Ford 1/2 ton, '62 Mercury Meteor, '55 Country Squire (parting out), '64 Falcon, '54 Ford 600 tractor.
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It’s highly recommended to leave the coating on the bearings. Removing these coatings is just another way to set the engine up for a premature bearing failure and is a perfect example of someone without all the appropriate information trying to outthink the engineers. If not performed using the proper equipment, imperceptable scratches are put into the bearing surface and the bearings will not only have a reduced surface area, bearing wear itself is sped up. Simply mic and insure that all clearances are within specification without modifying the bearings and keep everything spotless during assembly and this will be the first step to many miles of troublefree operation.
  Lorena, Texas (South of Waco)
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