/ The guy that put the engine internals together says "The rings are not seated yet end the smoking is normal. Just give it a couple hours of work"
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The 3-cylinder Yanmars I have rebuilt idled at 1000 RPM, and had min engine oil pressure spec of 8.7 psi at idle.What do typical small diesel engines run?
when repairing for a company that sells used tractors time is not an option so the quicker seating was needed as I had to go start on repairs on the next tractor. this method never let me down but was not needed on every build eitherWhen I went to school I was told to only do this is you can't get the rings to seat.
This is absolutely true for a competent shop to bore and then hone the cylinders to size to the pistons supplied before the block work is done.All I can say to that is most shops want the oversize pistons ON Hand Before they bore a block, that way they can final hone to put it on the money spec wise as far as piston to wall clearance.
. So the block was bored .040 over and then a set of .040 pistons in a kit was sourced?