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Replace oil filler cap with breather.

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Old Apr 19, 2006 | 02:15 PM
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Default Replace oil filler cap with breather.

I see on some guys LS1s that guys have replaced their oil filler cap with a breather that has what looks like an air filter on it. Is there any benifit to this or is it strictley for looks?
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Old Apr 19, 2006 | 02:52 PM
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If you have taken the pvc syetem out of the car then you might want to put a breather on it to let the crank case breath. It also helps the car not consuming as much oil.
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Old Apr 19, 2006 | 02:58 PM
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Where can I buy one of these?
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Old Apr 19, 2006 | 03:17 PM
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Its the end-all of oil in the intake due to the PCV system. Some ppl run catchcans w/ success. Some (like me) the can didn't cure the problem completely. I've been running a breather now for about a month. It'll declutter the engine alil bit and stop oil from gettin into the intake from the PCV. It'll reduce your oil consumption by alil bit ... but not completely since the PCV isn't the main source of oil consumption.
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Old Apr 19, 2006 | 03:32 PM
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FSTBLKZ28 what breather did you use?
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Old Apr 19, 2006 | 03:37 PM
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ive been having a oil consumption problem since i did my head/cam install, will it help to put a breather in place of the oil fill cap even if i havent deleted my pvc system?
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Old Apr 19, 2006 | 07:34 PM
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https://ls1tech.com/forums/generation-iii-external-engine/482130-do-i-need-pcv-valve-catch-can.html
https://ls1tech.com/forums/generation-iii-external-engine/451559-how-remove-your-pcv.html
https://ls1tech.com/forums/generation-iii-external-engine/442131-what-do-pcv-system.html
https://ls1tech.com/forums/generation-iii-external-engine/466543-oil-consumption.html
https://ls1tech.com/forums/showthread.php?t=451559
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Old Apr 19, 2006 | 07:53 PM
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I took the oil filler off and got a 1 3/4 diameter K&N breather for 15 bucks from summit. Works fine and is cheap. My next order from summit ill get one for the drivers valve cover. i wanted to see how the 1 3/4" breather fit since it was about 1/16 too big but it tightened up just fine and is very snug.

Dave
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Old Apr 20, 2006 | 01:24 PM
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I got mine from Year one, it screws into the oil filler cap and is really a nice piece.

http://www.yearone.com/serverfiles/p...=G&hid=G12AN79

Running a breather w/ the PCV on the car pretty much makes the PCV useless ... so no I don't think it'd help much. You might as well delete the PCV - it doesn't take long at all.
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Old Apr 20, 2006 | 01:33 PM
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the other option would be to add a breather on the catch can it self.
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