too much oil pressure?, high OT on the freeway Options

[VaccaRabite]

My 2056 is getting elevated oil temps on the freeway. I am using a high volume pump, and seeing about 40 pounds of pressure on the freeway when my oil is up to temp.

What I think is happening is that there is too much pressure, and the oil is not being pumped through the oil cooler due to the check valve closing the passage. However, this is just a guess, as I don't have any way to test it. All I know is that when I am driving at revs, oil temp goes up and if I keep driving at higher revs the oil temps stay up). if I drop revs, oil temps fall back into place, but I can't do that on the freeway without building a lot of head heat.

Before I go through the trouble and expense of adding an oil cooler, I want to make sure that I have checked out the simple fixes first.

What do I do to make sure oil if going through the oil cooler? What is the point where pressure cuts off passage through the cooler?

All tin is in place, and fan housing flaps divert air over the oil cooler 100% of the time (no thermostat in place, so the flaps are always set to cool).

Zach

[Elliot Cannon]

Start your car and put your hand down by the vents that go to the HEs and you will find a lot of cooling air goes out those vents. Definately block those off then drive the car and see if there is a difference. I have the same euro headers on a 2.2 liter type IV and I don't think they effect the oil temp much at all. I also use an aux. oil cooler under the rear trunk with the sandwich type adapter with thermostat. I duct cooling air from a scoop in the rocker panel to the cooler. It seems to work really well. 235 to 240 degrees is a bit much. Blocking off the vents is probably the easiest, cheapest thing to try and I would do that first.