bypass hose

It won't help to restore compression but it would definitely keep the oil from under the hood. The breathers have built in baffles that help stop the oil from being sucked out

I had a preacher that we built a chevy motor for. He came back after a years of driving and racing. It had a miss. The hood cable was broke for over a year and he never looked under the hood. When we got the hood open I found the one valve cover dead loose. Two out of the four bolts were gone. I couldn't believe the motor was as dry as it was. The evac system actually kept the covers sucked down. I tried lifting them while holding the throttle open I couldn't believe the the suction it had.

From then on I was a believer in this system. This is used on big cam race motors that have no vacuum for a PCV but I wouldn't see why it wouldn't work on a street motor. It may smoke But it may not. I never tried to relieve blow by but it doesn't sound like a bad idea. Why suck the oil through the intake with the PCV and gunk up the valves when you can just suck it out with the exhaust

In the back ground on this pic you can see the aspirator on the tube welded in the collector