breather question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

76bonanza · 11-09-2005, 07:18 PM

I pulled my breather from my valve cover I found the hole is not baffled do you need a special kind of breather for an unbaffled hole? Just seems it would get a lot of oil in it?

thanks

Gordo · 11-09-2005, 09:23 PM

I'd like to see a baffle in the valve cover myself, but I believe a stock breather or a good aftermarket one will have a baffle located up inside. Turn the breather upsde down and look inside. Also keep your PVC system in good wqrking order.

76bonanza · 11-09-2005, 09:39 PM

yes looks like the opening is only partaily open like slightly punched out sound right?

Also how can you tell if your pcv works good?

Oil can not get out of the breather right?

does it suck in thru the breather?

76bonanza · 11-09-2005, 09:58 PM

I looked my breather over just cheap chrome job from the underside looks like some of the spongey filter is saturated with oil.

The pcv makes niose when I shake it there is some oil in vaccum hose is that normal? or no? Will is suck some oil all the way up into the carb? if it does that is not good is it? Or is it such a small amount it dont matter?

Gordo · 11-09-2005, 10:11 PM

The PCV system including the breather, PCV valve, hose and vacuum source need to be clean and unrestricted from kinks, carbon and such. When the engine is running and you pull out the PCV valve from the valve cover you should notice a strong vacuum at the end of the PCV valve. Depending on the mileage and condition of your engine a small amount of oil shouldn't be a problem.

76bonanza · 11-09-2005, 10:34 PM

what about those breather grommets that are baffled anyone use them?

11-09-2005, 07:18 PM	#1
76bonanza Senior Member Join Date: Mar 2003 Location: St robert Mo Posts: 2,001	breather question I pulled my breather from my valve cover I found the hole is not baffled do you need a special kind of breather for an unbaffled hole? Just seems it would get a lot of oil in it? thanks __________________ 1968 c10 lowered 3" 4" 355/Th400 built by Hatfield racing in joplin MO

11-09-2005, 09:23 PM	#2
Gordo Registered User Join Date: Jan 2001 Location: Killingworth, CT. USA Posts: 3,378	Re: breather question I'd like to see a baffle in the valve cover myself, but I believe a stock breather or a good aftermarket one will have a baffle located up inside. Turn the breather upsde down and look inside. Also keep your PVC system in good wqrking order. __________________ 1971 C10 swb stepside 350/700R4/3.73posi (retired as of 4/22/03) 1998 S10 short bed 2002 S10 Blazer 1942 Oldsmobile 1958 Massey Harris Pony 1951 Wife Killingworth, Connecticut May those who love us, love us, any of those who do not love us, may God turn their hearts. And if God is unable to turn their hearts, may he turn their ankles so we may know them by their limping. A man who works with his hands is a laborer; a man who works with his hands and his brain is a craftsman; but a man who works with his hands and his brain and his heart is an artist.

11-09-2005, 09:39 PM	#3
76bonanza Senior Member Join Date: Mar 2003 Location: St robert Mo Posts: 2,001	Re: breather question yes looks like the opening is only partaily open like slightly punched out sound right? Also how can you tell if your pcv works good? Oil can not get out of the breather right? does it suck in thru the breather? __________________ 1968 c10 lowered 3" 4" 355/Th400 built by Hatfield racing in joplin MO

11-09-2005, 09:58 PM	#4
76bonanza Senior Member Join Date: Mar 2003 Location: St robert Mo Posts: 2,001	Re: breather question I looked my breather over just cheap chrome job from the underside looks like some of the spongey filter is saturated with oil. The pcv makes niose when I shake it there is some oil in vaccum hose is that normal? or no? Will is suck some oil all the way up into the carb? if it does that is not good is it? Or is it such a small amount it dont matter? __________________ 1968 c10 lowered 3" 4" 355/Th400 built by Hatfield racing in joplin MO

11-09-2005, 10:11 PM	#5
Gordo Registered User Join Date: Jan 2001 Location: Killingworth, CT. USA Posts: 3,378	Re: breather question The PCV system including the breather, PCV valve, hose and vacuum source need to be clean and unrestricted from kinks, carbon and such. When the engine is running and you pull out the PCV valve from the valve cover you should notice a strong vacuum at the end of the PCV valve. Depending on the mileage and condition of your engine a small amount of oil shouldn't be a problem. __________________ 1971 C10 swb stepside 350/700R4/3.73posi (retired as of 4/22/03) 1998 S10 short bed 2002 S10 Blazer 1942 Oldsmobile 1958 Massey Harris Pony 1951 Wife Killingworth, Connecticut May those who love us, love us, any of those who do not love us, may God turn their hearts. And if God is unable to turn their hearts, may he turn their ankles so we may know them by their limping. A man who works with his hands is a laborer; a man who works with his hands and his brain is a craftsman; but a man who works with his hands and his brain and his heart is an artist.

11-09-2005, 10:34 PM	#6
76bonanza Senior Member Join Date: Mar 2003 Location: St robert Mo Posts: 2,001	Re: breather question what about those breather grommets that are baffled anyone use them? __________________ 1968 c10 lowered 3" 4" 355/Th400 built by Hatfield racing in joplin MO

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