I have a question for you more knowledgable Vintage FF folks. I have a 69 lotus 61 with a vintage motor that seems to run good. I do not know the history, but it did pull strong at the track last summer. It had oil pressure of 50 psi and would drop with RPM's down to almost 20 Psi at 6k+ RPM. The oil light came on that has a separate sensor indicating the gauge was correct.
I have adjusted the oil pressure screw on the oil pump and now I have 75psi cold and 50 Psi at 6K rpms. Better, but why the drop with RPM???
Thanks-Brian