The past weekend I noticed a problem with the oil preasure in my RX7 (1980 12A). When I first start the car the PSI is around 30-40 pounds. After the race coming into the paddock it was only pulling about 5 pounds and the warning light came on. It drops to around 5 when running between 1000-1500 RPMs.
If I rev the motor it jumps up with no problem at all. During the race at about 6600 RPMs it is pulling around 70-80 PSI. The oil level is right at the full mark....It does have a second oil filter on the line running into the oil cooler. I run Redline 40wt and change the oil after each event. Thanks for any help you can give me.