Do these rod bearings look like they need to be replaced?
It is a lower-mileage motor (exact number unknown) and the crank surfaces look to be in excellent shape with no marks or discoloration. Cylinders and cam caps still show original crosshatching, so I don't suspect any major oil problems in its history.
I have heard that this bearing wear/discoloration is normal egg-shaping from just the nature of the piston pushing down on them while running, that puts the markings where you see them. I can believe that, but it doesn't sound good, does it?
The bearing oil clearances are right on spec, and the wear is completely smooth... but if I might have problems with them in the future, now is the time to replace them. But I don't want to be replacing them if they are "fine" as is.
Please let me know what you think...
It is a lower-mileage motor (exact number unknown) and the crank surfaces look to be in excellent shape with no marks or discoloration. Cylinders and cam caps still show original crosshatching, so I don't suspect any major oil problems in its history.
I have heard that this bearing wear/discoloration is normal egg-shaping from just the nature of the piston pushing down on them while running, that puts the markings where you see them. I can believe that, but it doesn't sound good, does it?
The bearing oil clearances are right on spec, and the wear is completely smooth... but if I might have problems with them in the future, now is the time to replace them. But I don't want to be replacing them if they are "fine" as is.
Please let me know what you think...
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