Well my previous post regarding lifters rattling and knocking was off base. Although I did have collaped hyd. ifters after replacing them I still have the knock.
1965 273 Commando motor
Mid speed knock 2000 rpm, stopped when I pulled the #1 plug wire. Rod bearing? Wrist Pin?
Drained the oil and cut the filter apart, all is clean no pieces parts or shiny flakes. ???
The motor has 600 miles on a freshen up rebuild, rings, bearings, new cam. etc. no machine work, all tolerances seemed OK.
I will know more later this week when I have time to drop the pan, but it is driving me crazy thinking about what might have happened.
Can the rod bolts loosen up and knock with out spinning a bearing? or mains?
Loose flexplate knock, been there before, but why would it stop knocking when pulling plug wires.
I did not pull the intake when I swapped out lifters so I never had a good look at the cam, but if it is self destructing where would be metal in the oil, right?
So let me know what I am missing.