breathers what do they do
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Joined: Aug 2007
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From: Cypress, TX
consists of breather(s), which expel crankcase vapors into the atmosphere,
whereas a "closed" PCV system, using the one-way PCV (flow control) valve,
routes the crankcase vapors back into the intake manifold, thereby recirculating
those vapors into the combustion chambers.
Never clean and re-install the valve - always replace it.
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Launching!
Joined: Nov 2007
Posts: 271
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From: Moore Oklahoma
And in doing so, you contribute to more pollution. The "open" PCV system
consists of breather(s), which expel crankcase vapors into the atmosphere,
whereas a "closed" PCV system, using the one-way PCV (flow control) valve,
routes the crankcase vapors back into the intake manifold, thereby recirculating
those vapors into the combustion chambers.
Never clean and re-install the valve - always replace it.
consists of breather(s), which expel crankcase vapors into the atmosphere,
whereas a "closed" PCV system, using the one-way PCV (flow control) valve,
routes the crankcase vapors back into the intake manifold, thereby recirculating
those vapors into the combustion chambers.
Never clean and re-install the valve - always replace it.
When you're running low-tension rings, you'll need additionaly crankcase breathers, as the factory PCV system can't keep-up at high RPM.
WD
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From: Vancouver,[KITSILANO].B.C. Canada *WestCoast*
OMG, my LTX race engine is not "green friendly." But, I'm making a lot of HP and getting down the track really fast, so what the hell. Sorry about that Al.
When you're running low-tension rings, you'll need additionaly crankcase breathers, as the factory PCV system can't keep-up at high RPM.
WD
When you're running low-tension rings, you'll need additionaly crankcase breathers, as the factory PCV system can't keep-up at high RPM.
WD
I thought about getting rid of the PCV system and running a breather, but I don't really think I would gain anything, I just wouldn't have a catch can to empty. There's enough pollution already, it's the least I can do. You're welcome Al Gore. 
Launching!
Joined: Nov 2007
Posts: 271
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From: Moore Oklahoma
just remember in some cases the PCM can't deal with the extra unmetered air let in by the breathers. The PCM should be able to handle it, but in some cases (mine for example) the PCM doesn't want to compensate for it.
That's another thing some people don't realize, if you run a breather while retaining the stock PCV system you are creating a vacuum leak, since unmetered air can enter through the breather and ultimately into the intake manifold.