Re: How to add a PCV Valve to a 1949 Packard

Posted by Tobs On 2015/9/23 5:35:08

Nice modification. The valve cover already has a baffle in front of that hole where the road draft tube attached, so no other baffle should be needed. I guess as long as the pcv has a spring in it, and is not just relying on gravity to open/close, it should be good to go. Having a closed crankcase also keeps your oil cleaner a little bit longer. Don't know if that really makes much difference here, but shouldn't hurt. I also think as long as you were able to get your idle tuned well, I don't see anything harmfull with this modification. Since the PCV should only open when the throttle is closed and manifold vac is high, Idle is the place where performance would be most affected. Tip in and light throttle could also be a little lean, but if you say it runs well, I'll believe you.
Since the PCV doesn't suck when you are hard on the throttle, you could potentially start leaking oil if you are doing long dyno pulls or something, but I gues the packard won't be seeing that kind of service. Anyway, I hope you don't get any kind of oil leaks. I would consider doing such a modification "when I'm done with everything else" Thanks for shareing!