D47u rod bearings

Hi Bret4207,
I suggest you put in the same style bearings as is now fitted. If you have the grouved set, either at the top and bottom or just the top--if I recall correctly--as the journal will have a unworn ridge around it from the grouved bearings and if you fit the plain bearings they could likely overload and fail as all the load is carried on the ridge area only and not on the full available area.
Hope this helps.
Cheers,
Eddie B.

Thanks Eddie, but the "groove" is more of a gullet, it's doesn't go clear around the bearing. I'm wondering if there any way to know when the change was made.