Originally Posted by Waaaaaaay2Loud
the only negative thing i can find about venting the crankcase is an occaisional drop of oil in the driveway , and the environmental concerns about venting directly into the atmosphere.
Well, the environment seems like a fairly good reason to me-- but I don't think there's a need to get all soap-boxy.
I'll leave it purely technical:
"...the PCV system does this by using manifold vacuum to draw vapors from the crankcase into the intake manifold." If you remove the hose from intake tube to valve cover, you remove the source of positive pressure; you know how much vaccuum there is in the engine compartment? None.
Vapors are forced out through the PCV valve by the air provided by the intake... so what's the purpose of removing the pressure line? If you were to install one of Endyn's filter tanks, it would be rendered useless by not having positive pressure...
It's a system that doesn't need to be replaced (or removed) because it is simple, and it works. well, that and there are absolutely no performance advantages to be had. If it ain't broke, why break it?