Are you seeing an unusual amount of smoke under the engine from the crank case vent pipe as well? There is always some atomized oil in the crank case and the top of the head. Doing a simple compression test (first dry and then with a little oil in the top of the cyl should tell if the rings or the valve guides are sealing sufficiantly. I agree with the above suggestion that a pcv will probably fix your problem assuming no unusual blow-by. I have an article somewhere on three different methods of installing a pcv. One canibalizes the crank vent tube. I'll try to find the article and forwad it to you.
