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Old 04-04-2009, 08:26 PM
ezobens ezobens is offline
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Olds 455 Oil Restrictors

I am in the process of replacing the bearings in my Olds 455 powered jet boat.
It appears that the previous owner put the Mondello main bearing restrictors in mains 1-4. Has anyone used these before?
I'm questioning if the restrictors have been pressed far enough into the galleys.
I enlarged the upper bearing oil holes to 5/16" but the restictors still don't line up with the holes in the bearings and I am concerned if I will have enough oil flow to the bearings (see attached photos).

Since I'm replacing the bearings due to apparent oil starvation on the #4 main, I want to make sure I don't run into the same problem again.
Any suggestions or advice would be much appreciated.
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