RSorak 71Westy wrote:The tightest clearances inside your entire engine are in the lifter. A tiny piece of dirt is probably in the old lifter and causing it not to stay pumped up.
This was almost certainly the case. You can see from previous photos how dirty it was in there.
From the very little internal work I've done on this engine, I know it's very dirty in there. It will only be a matter of time until another lifter fails and/or the entire engine will need a rebuild. Hopefully it will last through this summer.
RSorak 71Westy wrote:Lifters need to be broken in to get them spinning in their bores, if a lifter doesn't spin it will fail. The higher engine speed during breakin ensures plenty of oil to them and helps them get spinning.
Hopefully I did enough high-speed running to get it spinning good. I suppose I won't know for sure until something fails which, I assume, would take at least a little while to rear it's ugly head. That said, I'm relatively confident I did the lifter break-in correctly. Thanks for the reply.