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

[Chris Hamilton]

Could you point out what part of your links apply to a front mounted oil cooler on a type IV motor?

I see a link about inefficiencies in high pressure hydraulic systems, and a second link that doesn't address pressure at all.


edit: actually your first link shows the heat dissipation of it's cooling system as directly proportional to the flow rate, which is the exact opposite of what you say above. Looks like a good example.

(IMG:http://www.914world.com/bbs2/uploads_offsite/media.noria.com-5687-1274254055.1.gif)
Where: kW = heat dissipation of exchanger in kilowatts

L/min = oil flow through the exchanger in liters per minute

T ºC = inlet oil temperature minus outlet oil temperature in Celsius