vnturbswag

hello people, I have turbo'd my vn commodore. the first motor I used was the original s1 until I blew the rear main seal and began to learn about the difference in cranks etc, i've decided to change to a vr motor as I knew the manual parts were easier to get. I have only run this motor for 2 days and noticed oil spitting out my dipstick and it also popped out a section of my passenger side rocca cover gasket where it also has pushed oil out. There is a hose from the manifold to the bottom of the tb which I believe is something to do with letting the motor breath. on old cars u use to just have a breather pipe hanging down behind your motor but I feel like this is run from vaccum and will mess with the cars idle and performance. can anyone please help me with a solution to this??