OK Guys,
I have a Wellcraft Sportbridge with twin 3208 Cat's sitting at my dock
with a Sick Port engine.
Went to fire it up, there was some instant clatter & then nothing. Would
spin but not fire.
Had a Cat mechanic check it out. He pulled the valve covers & then the
heads & found 6 bent valves along with some bent pushrods & one blown
lifter.
He checked the crank & cam timing (indexing) & said all was perfect.
Well, after a new set of heads etc, turning the engine over (by hand
now) the valves Still hit !
Cat mech said he is stumped as to the cause as the Cats timing is Gear
drive & the Cam Gear is Pinned & Press fit to the Cam & he's never seen
one move.
His thinking was that maybe water "had got in" & seized the valves to
the valve guides. He knows better now!

Prior history...this boat went down during
hurricane "Charlie" (snip -long story) However, the Port engine never
went under & had No Trace of water in it anywheres but was Pickled as a
precaution anyway.

The Starboard engine (that went under) is fine. Both engines ran fine
prior to Charlie.
Any clues as to what may have failed ?
Anybody here see this before ?
It's impossible to disassemble the front of this engine while it's in
the boat ;-(

TIA---Joe in SW FL