View Full Version : Valve Breathers
ghost03
01-09-2007, 07:39 PM
I was told by a local dealership that these Valve Breathers would benefit more than the PCV tubing we have on our MM's. I just had the elbow shaped pcv tubing on the passenger side valve replaced after it broke and started to cause detonation. I was wondering if anyone has done this and if so how did it turn out.
Here is the link for the Breathershttp://store.summitracing.com/partdetail.asp?autofilter=1&part=KNN%2D62%2D1516&N=700+115&autoview=sku
It seems to be a fairly simple and cheap way to prevent oil from passing through to the PCV valve.
Any and all info is appreciated
Cobra25
01-09-2007, 07:43 PM
I also have been looking & asking around about this also. It seams to be a good idea.
KillJoy
01-09-2007, 07:50 PM
I would not do it.
You are venting Metered Air (via the MAF) to the atmosphere.
KillJoy
RUSTY
01-09-2007, 08:02 PM
how about a small air /oil seporator for an air compressor ,cambell hausfield for example plumbed into the line.
Dennis Reinhart
01-09-2007, 08:04 PM
I was told by a local dealership that these Valve Breathers would benefit more than the PCV tubing we have on our MM's. I just had the elbow shaped pcv tubing on the passenger side valve replaced after it broke and started to cause detonation. I was wondering if anyone has done this and if so how did it turn out.
Here is the link for the Breathershttp://store.summitracing.com/partdetail.asp?autofilter=1&part=KNN%2D62%2D1516&N=700+115&autoview=sku
It seems to be a fairly simple and cheap way to prevent oil from passing through to the PCV valve.
Any and all info is appreciated
Well this is not correct the PCV system is a closed crank crank case system, engine vacuum is on the PCV valve then you have air being drawn in on the drivers side valve cover from the inlet tube going to the TB this air was drawn in past the Maf thats why its called metered air, if you cap off the line going the intake tube and install a breather you are now sucking in UN metered air from the out side. This can have a effect on the AF
fastblackmerc
01-09-2007, 08:39 PM
What harm does the small amount of oil that is pulled in thru the PCV do? None I suspect. I'm sure if it did the Ford engineers would have designed the PCV system differently.
LVMarauder
01-09-2007, 09:10 PM
Keep all PCV tubing in place. I put a breather on the driver side one and I blew out all my engine gaskets.
magindat
01-10-2007, 07:06 AM
What harm does the small amount of oil that is pulled in thru the PCV do? None I suspect. I'm sure if it did the Ford engineers would have designed the PCV system differently.
Usually it gums up the ball and causes the valve to get stuck either open or closed.
fastblackmerc
01-10-2007, 07:59 AM
So a little carb or brake cleaner at every oil change should keep it freeballin'?:D
hal510
01-13-2007, 01:48 AM
Over at modular depot theres a good thread on this.
http://forums.modulardepot.com/showthread.php?t=95893
Marauderjack
01-13-2007, 05:14 AM
PCV was developed by the Military many years ago and has proven over decades to extend oil and engine life as much as 10 times the life of engines without PCV!!:beer:
PCV is a GOOD thing and it should remain in tact especially on street cars that see a lot of "Stop & Go" duty!!:cool:
Marauderjack:burnout:
tmac1337
01-13-2007, 08:56 AM
I have an in-line reversed PCV which closes under boost and is open otherwise allowing the oil to move about.
I would recommend this for every Procharger kit. The earlier kits came out with it dumping at a T before the blower, this has now been changed as noted above so the coolers do not take on any oil. These will have to be cleaned occasionally or changed so they do not gum up.
Any of you Procharger guys still using a T before the blower, make sure you get with someone and change it up. Parts are just a few dollars from local auto parts stores.
Don't know how this would effect the roots type cars.
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