I would say these numbers would vary based on the application and HP of the motor. I run the water 110-125 and the oil 180-200. Its a balancing act but I believe getting the oil hot so it does its job is priority #1. I was told cooler temps make more HP
Different setups=different temps.
I have no bypass, no jet inlet regulator, no t-stat. From jet to block, 2 out the t-stat housing- 1 to headers, 1 straight to dump.
If I remember right, idles usually at 190* runs about 100*-110*.
I have to control temp/flow with the ball valve on the inlet of the jet.
It's not the best way but it works for now.
I have a ball valve at the jet. Thats wide open. Straight to the water pump holes. Out the T stat with no restrictor or t stat. One goes to the bassett valve one dumps out the back.
My temp never goes over 135 in the summer.
It stays around 100-110 right now.