Re: failed head gasket? picts attached
hightrim,
the 25 hp, 1980, i dont know anything about it. i bought the motor for 100, so i didnt expect much, outside of it needing work. the stat had failed (as in wedged in) would run, pee water fine, but would over heat to the point of shutting down. at first i just changed the coils, but it did the same thing and shut down. i removed the head and this is what i found. so... i will need to drill and retap one of the water jacket bolts, dress the head and install new coils. should turn out into a nice runner i hope.
as for the 15, 1996, its a buddy that i helped service the motor. interesting enough, i checked the compression first, had 130/130 serviced the motor. three shops had tried to get the idle down under 1000 rpm at idle. i replaced the carb cover and installed a missing gasket for the bottom of the bowl. replaced the water pump. when it left the motor ran great, pumped water and idled a nice and low 650 rpm.
he takes it out for a duck hunt (got 14 that day!) and after running hard for about 15 minutes it died and here it is. blown head gasket... the stat was replaced prior to myself. the strange thing is why or how did the gasket all of a sudden blow? newer motor with low hours. i have some vintage 50's motors that still run and are fine not to mention countless 80's motors that are fine.
dino
