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3/4” and 1” hose just to make a butt connector with some hose clamps. I think that should hold up, I have no idea how much pressure there could be. Worst case I blow a hose off at one of the connectors and try flaring the ends of the copper pipe

Hey guy decided to join because I found a lot of great info on here. Concerning the cdr valve, you need that. It regulates how much crankcase pressure you have. You do need some but not too much. Anyway gm still makes this valve even though they will say there all discontinued. The old number...

did you mean to say vented oil cap? I don’t think this cdr system works with a vented oil cap. You still need some crankcase pressure just not too much. Having none will also cause seals to leak did you mean to say vented oil cap? I don’t think these cdr or pcv valve systems work with a vented...