09-11-2018, 05:55 PM
Looking at Ruairidh's photo above, that crank had a crack nearly all the way through before it failed - just the last bit on the right and the bit at the bottom was holding it at the end?
When I stripped a spare engine and had the 3-bearing crank tested, turned out there was a crack starting in that region. It was immediately promoted to doorstop, and could not of course be sensibly built into an engine, but it may have run a fair while longer before breaking, I imagine? (I have no idea of the history or condition of the current crank in my car - though the journals are at -40 thou. After 20 years, still drive with crossed fingers.)
Colin
When I stripped a spare engine and had the 3-bearing crank tested, turned out there was a crack starting in that region. It was immediately promoted to doorstop, and could not of course be sensibly built into an engine, but it may have run a fair while longer before breaking, I imagine? (I have no idea of the history or condition of the current crank in my car - though the journals are at -40 thou. After 20 years, still drive with crossed fingers.)
Colin