Help - oil pressure / flow on engine first start.

[Colin Cooke]

There are 2 different types of oil jet. I built an engine with the smaller holed jets once, and went for a 20 mile test drive in minus temperatures. I assumed that the engine had never warmed up properly (the driver and passenger certainly hadn't), but it turned out to be the wrong jet size. If I remember correctly, the oil pressure settled around 10psi.
I can't recall what the right and wrong sizes were, but hopefully someone will come up with the correct information.

All the best,
Colin