I brought home a 1984 R65 motor in 5 boxes. After examining the parts I found one big end rod bearing has failed. The oil pump looks good even though the oil pan has copper colored bearing pieces in the oil. Before rebuilding, I would like to know why the rod bearing failed so I can fix the problem the caused the failure. Any suggestions?
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Spun rod bearing R65
- Thread starter dustoff
- Start date
pglaves
#13338
Connecting rod bearing failure is rare except on very high mileage engines but it can happen for a few reasons. Foremost would be poor lubrication, either due to a failure to properly change oil or an improperly fitted oil filter causing a loss of oil pressure. Running the bike out of sufficient oil will do it too. Rarely, a blocked oil passage might occur.
I would carefully examine the crankshaft journals for all the bearings.
I would carefully examine the crankshaft journals for all the bearings.
