If you are going to to put a direct line from the valve cover to the metal tube that leads to the oil pan, all it's going to do recirculate the crankcase gas and create a higher pressure within the crankcase that could blow out seals or make the engine run very poorly or keep from running or all of the above.

The reason for the oil separator is to separate the oil from the crankcase gases which drains oil back to the oil pan. The separated gas could be reburned or vented into the atmosphere. I have mine routed to the intake turbo hose to be reburned.

If you didn't have an oil separator and vented directly to the atmosphere, you'll have oil just spraying out.

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1983 123.133 California
- GreaseCar Veg System