When testing the oil relief valve springs, both in the block and in the pump, it was discovered that the spring in the pump was quite higher tension than spec. Can this happen to the spring steel under certain conditions or did someone install a stronger spring at some point for some reason?
Spec is between 78 oz / 4.875 lbs and 87 oz / 5.42 lbs. The spring was measured at 128 oz / 8 lbs.
The block oil relief spring was a lot closer to spec at 4.5 lbs
Block relief valve spring
Oil pump relief valve spring
