<VV> engine noise

[Lonny Clark]

Well, I need advice again. After the Portland convention I had a problem
with my newly rebuilt Spyder engine. After throwing the belt, I pulled into
a parking lot and put the belt back on. When I restarted it, it was running
really badly and made an awful noise (knock, or clang). I did a compression
check, one cylinder had zero compression. I posted that information to the
list, and received the advice that I had lost a valve seat. After much work
and procrastination, I got the engine out (needed new input shaft seal
anyway) , and pulled the head. Sure enough, ex. seat on #2 was popped out. I
took the head in, had it welded up, and a new seat and valve installed. It
cost twice the estimate, but that's a complaint, and not helpful here.

I reinstalled the head, put the engine back in, sorted out what wires went
where, and started the car. The good news is it runs great, fires on all
six, revs good. The bad news: There's still a really nasty knock or clang.
It's rythmic, sounds like one sound per revolution. I can't tell where it's
coming from, but sounds like it's internal. How do I find this one? Do I
need to rebuild the engine - again? It only has 40 miles on it.

I'm starting to get upset at the amount of work this car has taken to get to
this point, and I still can't drive it. (about the same feeling I got last
year)