Sorta. Cam was actually cast, but rivet on decompression pall worked loose alowing pall sideways movement... where it beat the crap out of cam drive gear on crank. Damage to gear enough to bind between crank and cam. Only damage to engine, but sufficient to DOA it. Wasn't a problem for other use as I had several brand new straight cranks. But trashed gen taper crank. So have good non-gen motor.What was the reason for the tear down at 4k? Some other part than the engine give up the ghost? Cam finally wiped out?
Pure molybdenum disulfide powder. (The "moly" in "moly grease") One time treatment is one rounded teaspoon mixed with third oil change. Combined with drainplug magnets cleaned every oil change. Oil change at least every 100 hours runtime.Worth further investigation.
I will look for that stuff and try it.
What is the exact name of the product?
Just checked, link sharing is enabled. Should see total of ten pics. One shows crank end, one shows me holding cam with loose decompression pall that did damage to engine. (Reason for teardown.) I probably ought to just upload all pics I took during teardown.Hmm, I don't see any of the new pictures.