Hi all. before i start pulling things apart again I'd like to know if this makes sense. I fitted a new piston and rings to my B33 - the old rings had an enormous gap and piston scoured, tho it ran well enough and did not smoke on starting. Now if left of a week it smokes very badly for 10 minutes. not neighbour friendly.
to test, I let it sit for a week, removed the pipe and carb and saw no oil draining down valve stems even when kicked over a few times, but it smoked badly on starting. Then a week later I drained the sump - about 200ml came out, and no smoke when started. So I figure the extra compression of new rings is forcing more oil out of a wet sump OR I messed up the ball and spring somehow, tho i don't recall touching them. Plausible? tho I didn't think of 200ml of oil as a lot. So what to do - replace ball and spring? get better breathing? the smoke does clear so I assume the pump is scavenging OK, tho could be worn in the gears so next replace that? or...?