That’s a bummer. I’m sorry to hear that. J B
weld seem plausible to me. Its low pressure
and not much heat. Brazing is another
option, however the crack may grow when
you apply the heat. Best solution is another
cylinder. May have to buy a power head to
get one.
Its actually nickel. The cylinders,
driveshaft tube, steering bar, fuel line, water
lines, water pump, all the brass fittings, all
the brass fasteners, and most everything that
isn’t aluminum was nickel plated originally.
Tubs.
A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.