The other day a post from Ken Wilfy commented on expected longevity of the
waterboxer engine.  As I understood it, he thought that the bottom end got
tired around 150K and you should think about rebuilding by 175K miles.  I go
on 2,000 mile trips several times a year in my '86 Syncro with 165K - am I
pushing it?  I don't want to break down with a blown engine a long way from
home.  Should I think about rebuilding as a matter of preventive
maintenance?  The engine has never been apart expect for changing one head
at about 110,000 miles because it went porous - the deck was fine.  It runs
good, no oil consumption, gas mileage as good as ever (19-21 mpg).  Opinions
and experience welcome?  My mechanics engine blew unexpectedly at around
130K!