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    scratches on the block where the balancer shaft bearing sits on 4.3. Does it need to be machined or can I just press the bearing over it?

    I recently bought a new boat that had a 4.3 MerCruiser in it that was seized up. Water got in the cylinders and one of the freeze plugs popped. I removed the engine, to inspect to see if the block had any cracks and clean up all the rust. Disassembled it down to the block and after cleaning it...
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