Quote Originally Posted by Don Dalton
Kitz, when I was setting up the 34,our local Speed Shop said it was OK to run the two breathers on the valve covers and the PCV valve was not really needed.What do you mean by positive pressure causing oil leaks.Where would you notice an oil leak? Should I re-do the system? Thanks
Sorry for the delay.

If all you use is breathers (and I have done that) there wil be a net positive presure inside particularly under heavy throttle useage. It will not be severe, perhaps ~1-2 psig or so. Why? Breathers do have some restriction and at heavy throttle there is more blow by to contend with.

Will this lead to a real leaking problem? I think eventually it will, but a lot of that depends on how well sealed the motor is and what your driving habbits are. I just never liked them because of the stink I always seemed to notice versus using a PCV. Also make sure the breathers in all applications do not get clogged or the pressure will go up quickly.

Kitz