> I seem to recall some research into ceramic-coating the tops of pistons,
> too, to protect them from damage in lean-burn engines.  I don't know if it
> panned out, though.

Ceramic piston, head and valve coatings are used in race-car engines.  They
are also available for our lowly cars.  There are a number of companies that
can apply ceramic coatings to engine parts of your choice.  Ceramic-coating
your water boxer heads will eliminate the possibility of pitting from
coolant leaks.

Chris,

'85 Westy.