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Old 09-20-2016, 02:00 PM   #3
Steve Tinker
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Join Date: Dec 2008
Location: Queensland, Australia
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As an addition to what JFP says, I seem to recall a few years ago Jake Raby was seeing a number of dropped valve seats which caused all sorts of mayhem to the combustion chamber, although I don't remember if the seats actually broke apart.
Of course, the oil overfill may or may not have caused damage depending upon the additional amount of oil dumped into the sump.
As well as a boroscope and a compression test to isolate the offending cylinder(s), a picture of the offending steel segments may give a clue.
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