Originally posted by afm
By seeing your crank (color), and by the description of your leaking problems, before you fixed them, I most certainly can tell you that the breakage came because the crank was allready stressed from running overheated with a lean mixture, produced by the leaks of the past.
AFM
According to your statments, that overheating can damage crancshaft? How much do you have to overheat alloy steel to stressed it to come to point when it is brake? After heat hardening ( approx 800 C) you have make stress reliease heat up to 300 C. To make steel easy to brake you have to heat it up to 400 C and then it will brake. Did he overheat engine by that far? I realy don't belive it.
It broken because steel qualty isn't that right for this aplication and it is not news for anybody.
