Posted by Steve@Advance on February 11, 2023 at 17:05:10 from (99.190.215.237):
In Reply to: Oliver 1550 overhaul posted by super99 on February 11, 2023 at 15:59:11:
The cylinder scrapes are pretty bad, and I suspect the ring lands are just as bad, so a set or pistons and liners will be in order.
I doubt it needs line boring unless a bearing spun, or the caps are mixed or came from another block. Line boring is expensive. Looks like it may have been put together dirty or not enough clearance. I don't know how many more under sizes are available on the bearings, some only go to .030. The machine shop should know before they turn the crank. But it may be ok just polishing it if it was too tight before.
The worn thrust bearing is pretty common. The thrust surface on the crank may need attention.
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