Engine really knocks after leakdown

Thanks oldmanrick. That is what I'm leaning towards. I ran it for around 2-3 mins I didn't wanna do anymore damage to the motor so I turned it off.
It's very bizarre that is to so much louder. I have to do a rebuild now anyways do to the results of the leak down test. ( air coming from crank case).

You're welcome.... I don't think you did anything wrong, and if i heard the noise i would have done the same thing and shut it off....lol. Hopefully that's all it is, lifter/rocker noise. Sorry that the leakdown didn't go well. But the rings will eventually give up on all engines sooner or later.