DblUgly
I agree with Pat...play with
oil weights first. I was getting high pressures too based on 50w
oil, and Pat had me drop it to 20/50w for winter and it solved my problem...course, I dropped the bypass to 85 lb as well, so it never goes beyond that even when cold.
Something my builder (Boghosian) does to his race motors (and thankfully mine given how tough it is to remove the pan in most of these basturds) is to run an external
oil return line with a pressure valve for the oil pressure, instead of the one inside. Comes off the back of the block and goes down to the Aviad near the dipstick tube. I'm able to access the valve and play with the shims quite easily from below without dropping the pan. If you're going to drop the pan anyway... (Course, putting a fitting in the block's another story.
)
I'll post a pic...