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Title: Valve Cover Breathers Post by: linguinipenguini on September 06, 2011, 10:46:53 PM Can valve cover breather filters harm your engine? What are the benefits/disadvantages of them?
Title: Re: Valve Cover Breathers Post by: timot_one on September 06, 2011, 11:24:10 PM I wouldn't use one. Your valve cover has a breather line that goes to your intake to create a vacuum. The smart thing to do is to get an air oil separator/catch can for that line from your valve cover to your intake. That will keep your intake tract from oily deposits.
Title: Re: Valve Cover Breathers Post by: Rushzer0 on September 07, 2011, 07:24:19 AM ^He speaks the truth I spent about an hour reading about this exact topic on k20a.org last night, putting on a breather filter will only give moisture a possible way to enter the lubricating system and contaminate your oil, making it froth and such.
Title: Re: Re: Valve Cover Breathers Post by: CrackerTeg on September 07, 2011, 08:17:16 AM Translation: no bueno.
Title: Re: Valve Cover Breathers Post by: timot_one on September 07, 2011, 11:15:22 AM Sometimes I know what I'm talking about. When it comes to being a daily driver, you're better off with an air oil separator over the breather filter.
Title: Re: Valve Cover Breathers Post by: linguinipenguini on September 07, 2011, 12:18:07 PM Ah. I just installed a new intake and im having trouble with the vacuum hose that goes to the valve cover.my thought process was to put on a breather and seal off the connection on the intake pipe. If i did an oil change every 3-4K miles would this reduce the risk? Also, there is a 90 degree elbow that connected the old valve cover line to the intake. It also has two coolant lines attached to it. Is it okay to delete this elbow and directly connect the coolant to its port? I'm sorry i have no pictures, but if you know what im talking about please reply!
Title: Re: Valve Cover Breathers Post by: timot_one on September 07, 2011, 11:18:41 PM You can delete the coolant elbow. I would not recommend that you use the breather filter on the valve cover though. Again, there is supposed to be a vacuum from the intake on the valve cover. It's really something that you should continue to use. But go ahead and do whatever you like.
Title: Re: Valve Cover Breathers Post by: linguinipenguini on September 08, 2011, 04:20:12 PM I deleted the coolant elbow, but stuck with a vacuum line for the valve cover
Title: Re: Valve Cover Breathers Post by: si2accord on June 15, 2014, 11:40:57 PM I have them on my car with no problem :)
(http://imagizer.imageshack.us/v2/640x480q90/850/tmjz.jpg) (https://imageshack.com/i/nmtmjzj) Title: Re: Valve Cover Breathers Post by: timot_one on June 16, 2014, 12:07:45 AM Since this thread was last posted in, I've actually made some changes on my motor set up. I have 2 additional -10 an ports on my valve cover and have the OEM breather and PCV deleted and all of these going to a vented catch can.
I doubt you'll see much benefit either way on a stock set up, but on a boosted or built motor it's better to have them vent to atmosphere with a catch can. |