High Oil temp, I need suggestions (good ones) Options

[gunny]

I have had problems with High oil temps (240f) since I have owned the car when if I hit the highway for any period of time. It appears that I'm not able to cool the oil when at higher RPMs (above 3000) and the out side air is not cold. I have read every post that comes up in a search about oil flow and temp.

My car
1. 1976 2.0 D Jet cal with cat, pump and other extras removed
2. 20w50 oil
3. car runs very good and smooth (I don't have any other 914s to compare to)
4. idal good and steady(1100 cool, 950 warm)
5. no oil leaks (IMG:style_emoticons/default/aktion035.gif)

I have added the following gages to better monitor this problem
1. Oil temp gage
2. Oil pressure gage (pressure >70psi at initial start, goes down to about 15 at idal and oil temp about 200, when oil tem goes higher pressur goes lower than 10 psi per 1000 rmp)
3. wideband 02 (12.5-13 at steady speed, goes down to about 10 at WOT for a few seconds then climbs to 11+ untill steady speed then about 12.5) (will go high 14+ for about 1 second at WOT while passing thru 3700 RPMs then back down to 12.5)

I have checked or done the following work
1. adjusted/varified the valves, timeing , dwell, TPS
2. Injectors cleaned and flow tested (made motor run much better and smoother)
3. MPS hold vacuum
4. I have done all of the ECU Ohms checks
5. I have varified that my flap is coming down and covering the Oil cooler
6. I have no debris on the cooler or air flow to the oil cooler
7. I have all of the tins on the car, I have the 2 plastic air dams under the car
8. The fan is not missing any blades but does still have the pump pulley atached(I plan on removing when I take the motor out)
9. I have installed the higher oil relief spring and valve (problem did not change)
10. I have learned a lot about D-Jet theory
11. I'm still having fun but would like to be able to drive it more


Any other suggestions would be appreaciated.