:
: I went through the valve adjustment not
: expecting things to be any better for my
: effort. Here's what I found: All the intake
: adjustments were virtually dead-on. All
: were between .010 and .011. The exhausts,
: however, were tight. The lash on the problem
: #5 cylinder was .014. All others were about
: .018. I last adjusted the valves about 50K
: ago. I now have about 110K. I made my
: current adjustments after about one hour of
: running time with temps stabilized. I set
: the lash a bit on the loose side at .011 and
: .021.
:
: The result? The engine now runs smooth. No
: miss. The idle vacuum went up from 19 to
: just over 20. I did not redo the compression
: check, but cranking the engine with the
: ignition disabled does not indicate an
: 'easy' cylinder as it had before.
:
: Conclusion? I believe the exhaust valves
: receeded. More so on #5. How long will the
: engine hold up? I'll stretch it for as long
: as I can. I went back to adding Marvel Oil
: to my gas. I stopped doing this after my
: second converter plugged up. I'd rather
: replace a converter than a head though. I
: also backed off on the spark timing a bit.
:
: Who would have thought a valve adjustment would
: have been so critical?
:
: Your thoughts?
:
: Thanks
:
: Mitch