Non Standard Piston

[Alan]

Bob’s advice comes from the 60s, when parts and labour were cheap. If you attack that crack with a file you will only remove the crack to the resolution of your crack test kit. The crack will still be there and be active. The crank will break. Maybe tomorrow maybe in several years, but you will be building an engine destined to fail. I know new cranks seem expensive but they are less than one sixth of the cost of a decent engine rebuild. Simply, these days, I wouldn’t even think of an engine rebuild without a new crank.