I can't wait to see Robi's testing... but here's some more data from this morning.
As noted above I switched both sensor locations and oil weight. Most of this increase is due to the oil weight I'm sure. However, the gauge is actually STABLE now instead of bouncing often in the original location.
It's still "cold" here (~60 degrees) but on the same route today I showed the following oil pressures at approx 75C oil temp (at the sandwich plate after the oil cooler):
3k: 650 kPa (94.3 PSI)
3.5k: 680 kPa (98.6 PSI)
4k: 715 kPa (103.7 PSI)
High RPM to redline: Rock solid at about 750 kPa (108.8 PSI)
That's a massive increase from before. Again I think the pressure increase is a combination of weather (colder temps and thus colder oil) and oil weight. The stability of the reading is, IMO, related to the location of the sensor but Robi will hopefully be able to provide his experiences this weekend.
Looking forward to tracking the car next weekend instead of worrying about oil pressure
__________________
-Dave
Track cars: 2013 Scion FRS, 1998 Acura Integra Type-R, 1993 Honda Civic Hatchback
DD: 2005 Acura TSX
Tow: 2022 F-450
Toys: 2001 Chevrolet Corvette Z06, 1993 Toyota MR2 Turbo, 1994 Toyota MR2 Turbo, 1991 Mitsubishi Galant VR-4
Parts: 2015 Subaru BRZ Limited, 2005 Acura TSX
Projects: 2013 Subaru BRZ Limited track car build
FS: 2004 GMC Sierra 2500 LT CCSB 8.1/Allison with 99k miles