crank case breather
Thread Starter
Joined: Aug 2010
Posts: 1,759
From: Murfreesboro, TN
crank case breather
I have seen many newer montes with a breather filter in place of their oil cap. In consideration of doing this to my own car, what are the gains, pros, cons, and the prerequisites to this?
Monte Of The Month - February 2010
Joined: Apr 2009
Posts: 11,981
From: Pittsburgh, PA
from an earlier post by chibi Mike....
You should just put the regular oil cap back on your car and just use the breather for shows. That breather is only for people that need to disable the PCV system because of something like an intercooler. Your PCV will vent your crankcase enough and better than that.
You are doing more harm than good
Your oil cap and dipstick are sealed off for a reason
You are doing more harm than good
Your oil cap and dipstick are sealed off for a reason
Can't spell PIMP without an MP
Monte Of The Month -- November 2010
2010 Monte Of The Year
Joined: Jul 2010
Posts: 2,626
From: Grove City, Ohio
from an earlier post by chibi Mike....
Originally Posted by ChibiBlackSheep
You should just put the regular oil cap back on your car and just use the breather for shows. That breather is only for people that need to disable the PCV system because of something like an intercooler. Your PCV will vent your crankcase enough and better than that.
You are doing more harm than good Your oil cap and dipstick are sealed off for a reason
Originally Posted by ChibiBlackSheep
You should just put the regular oil cap back on your car and just use the breather for shows. That breather is only for people that need to disable the PCV system because of something like an intercooler. Your PCV will vent your crankcase enough and better than that.
You are doing more harm than good Your oil cap and dipstick are sealed off for a reason
I am really curious. I'm not posting this to be contrary.
Monte Of The Month -- August 2014
Joined: Sep 2008
Posts: 25,145
From: Southeast PA
If you need to have a vent for your crankcase because you had to disable your PCV system, then you should run the filter oil cap.
If you want to have it, just because you think it looks cool but still have a functioning PCV system, then you aren't helping.
If you want to have it, just because you think it looks cool but still have a functioning PCV system, then you aren't helping.
thissssss
Joined: Aug 2008
Posts: 722
From: Philadelphia, PA
What does the oil filler cap have to do with the intercooler?
For the OP, there is no benefit to this unless you're going turbo (in which case the benefit is the turbo lol, and there just isn't a way around the breather otherwise), and on a stock n/a car could end up making your car run worse (you'd be creating a vacuum leak essentially).
Because you have to disable the PCV system in your engine in order to run one most of the time.
Also for an intercooler core that blocks off the front stock pcv passages (like the WBS one), you're better off routing metered air into the valve cover instead of running a breather. I guess this can be a little tricky with a stock L67 throttlebody, but is really easy with a northstar or LS1 throttlebody setup.
