Hi to all that have answered my question. This is the latest on my end. I went in the dash through the heater control panel. It was not easy but it was the best way to go in. I removed the guage and fixed the lense. Put the guage back in and also installed a new oil pressure switch. The results i get now are as followed. I get 20 lbs. of pressure at idle and 70+ at 2000rpms. Please let me know if this is about right. I would also like to thank everyone for their help. It is nice to have some where to go for help. I hope i will become as good with z as i am with mustangs.

Thanks

Looking for a z( i found it):classic:

yep thats good strong pressure. those oil pressure units clog up pretty easily and give low readings, and they are pretty inaccurrate. i have a turbo oil pump in mine and the gauge reads 40 PSI at 1000RPM, which cant be right.

Yeah the turbo oil pump is great gives good oil pressure.

My 260z gave low oil pressure should have tested it externally I guess but the engine felt pretty ordinary after a while. I thikn it was getting tired.