I'd wonder what the bearing clearances & etc are - hopefully you got build specs. Mine never had less than about 40 PSI, nor more than 80 PSI with 10W-30 oil.
I have not been able to get the specs, several people involved to reach the source. Yes, I have also seen higher but I knew it was a high pressure pump. I'm wondering if its a oem pump and that's all it does.
