Another pcv thread

[Roar99]

Hi, so got a bit of a mix n match going on..
& just wanna know is runing air breathers of each rocker cover gona get me bye till it goes in for tune & pcv plumbing or do these engines definatly need manifold vac to run safely.?
Vz ss ls1 (elec throttle body)
1. New rebuilt engine doesnt have a valley cover outlet, (as original engine did.)
2. Old setup has otr but just had a breather off rocker cover (not plumbed into otr)
Any help apreciated,, need to run in 100k or so before it goes in for tune..

 

[Immortality]

The PCV system is designed to prevent crank case gasses from escaping to atmosphere as is required by law for any vehicle traveling on roads, for race cars it's a different story. Crank case gasses can be harmful not only to nature but also to the components inside the engine, again on a race car where regular oil changes are done this isn't so much of an issue but for a street car with longer service intervals it could be.

So the question really is what do you want to do? I'd recommend some sort of breather system that includes a catch can and doesn't vent to atmosphere.

 

[Roar99]

Yeah cheers i understand the corect way it should run, just trying to get it 'safely runing' till it gets to to shop..
So if i use this setup since i no longer have a valley vent tube it should b fine?.
Run both rear rocker cover outlets to t peice then into sealed catch can, then catch can out let into manifold..
Run front passengers rocker cover outlet into vcm otr (make a fitting entry hole)

 

[Roar99]

So the above pic is how i have set it up, rear out lets t peiced into 'baffled' sealed catch can-then into manifold,,,
Fresh air intake from front rocker vent (yet to b plumed into otr) should i get a pcv valve & place it between cc & intake? To govern flow a bit, seems to b alot of air pullin thru the clean side..
& yes the new cammed engine is up n runing woo hoo!!