RW Salnick wrote:
(snip) You won't need to make any changes to the pulley to
make the
alternator deliver 24 V, but the the diodes and the diode trio will need
to be replaced with 24V versions.
(snip)

Are you seriously suggesting that a 12 volt alternator is
made with a diode trio that cannot handle 24 volts? I was
under the impression that few silicon rectifiers are made
with a breakdown voltage less than 50 volts.