"Bob Chilcoat" wrote in message
news

Whatever has gone wrong inside is bad. The engine bangs and vibrates like
there's a rod thrashing around in there, but it runs and delivers full
power.

Then it's not the con rod- it wouldn't run at all if it was.

Is this a Synchro-Balance engine? If it is, the little strut that holds the
synchro weight may have snapped. Easy fix.

-Carl