|
I haven't particularly looked into the valve spring issue but I seem to recall hearing something about it being a heat treat issue that caused them to be susceptible to failure (which would make sense to me)
Since one supplier would be selling springs to several different manufacturers I wouldn't be surprised to find that this became a widespread issue. The heat treat problem (if that is in fact the issue) might not be that the treatment was spec'd wrong; it could be that one of the suppliers furnaces was running out of spec or miss-reading the temps.
Just my shot in the dark with my understanding of how such things work, but with no research done on this specific case.
|