I've seen a few Sentra's with little breather filter's on there valve cover etc. and i was wondering what exactly they're for and if they help or enhance anything or just B.S.?
Thank's, i knew they wouldn't give me HP you'd have to be a glue sniffer to even consider that! Just wondered if it'd help idle, temp etc. and i now know not to waste my $$ thank's for the info!
im gonna go buy some and put them on my air vents, cause they are filters right, that way i can breathe faster and get more hp. im gonna go ut some type r stickers while im at pepboys and get some hubcap spinners for my SE-R wheels. i cant go an any more cause im making myself sick but hopefully thatll be for a good laugh.
Well I've got one, and it does have a purpose. I modified my airbox so it would be a WAI and in the process got rid of the AIV and redid the PCV system, the filter goes in place of the hose that used to go from the valve cover to the air cleaner. Now instead of the blow-by gases being fed back into the intake and leaving an oily residue on everything, it just gets vented to the atmosphere. You should also install a catch can when doing something like this but 2 or 3 drops of oil a week doesn't bother me. On higher displacement/hp engines this has been said to increase power since the oil vapors would normally combine with the fuel vapors and decrease it's octane.
Of course you're not going to see any noticable gains with a 1.6l though.
on some cars (i don't know which ones) the valve cover has negative pressure, and removing the breather tubes leaves the opening exposed and dirt could get in the oil. I know on my brother's Impala SS, he installed a K&N FIPK, and he took the breather hose off the intake tube, and put a breather filter on it. Not because he wanted to, but K&N said so and included one. On I4 imports though, they usually don't do anything. On my SR20, the cam cover actually has positive pressure. Removing the oil cap while running makes noise and pushes air out, along with lots of oil spray. The breather on ours takes air and sends it back through the intake. Bypassing this, and putting on a mini filter will have no performance gains at all. Most people do it because it looks good and makes sense to them. I'm gonna be installing a short ram intake in a friend's 93 Civic, and the intake tube has no holes in it for breathers or temp sensor. I told him to put a filter on just to keep airborne dirt out of the cam cover.
__________________ My Whip Stillen 4-1, WAI, 2.5 Catback.
I put breather filters on my car. I'm glad I did. The one valve( I think AIC) got clogged and I noticed some oil coming out of the breather filter. Don't want that going into the intake.
So instead of the blow by oil going into your intake it escape's through this filter? Do you get any oily residue all over your engine bay though? I guess it's one of those thing's you try or you don't, i have 220,000km's on my car and it doesn't burn/lose a drop of oil between service's so i'll just leave it prob instead of causing a prob i don't want later!
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Breather Filter's
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