Thanks a lot for sharing knowledge! I will do a proper leak down test to check blow by. With two open air filter style breathers that have no resistance when I blow through them I doubt that I do not have proper enough crank case ventilation. I guess if all cylinders is within 10-15% leak down I have to go down the path of installing a vacuum pump.
This car / engine are only street driven is there anything I need to consider regarding vacuum pump choice or installation?