valve cover breather
My friend ran one of those things you showed in a picture on his fresh air hose, and he (healthy engine too) had filled the thing up in no time
I also have the BF412 inline filter on the passenger side valve cover like was mentioned above. It fits in there like it was supposed to be there, you just have to remove the elbow to get it in there. I usually change mine every 2 oil changes or sooner if it looks like it needs it, they are only about $5.00 from autozone.
yeah just remove the little plastic elbow in the passenger side valve cover, then the grommet (rubber thing in the valvecover) is the right size to accept the seperator. Detach hose from plastic elbow and and attach to seperator.
Most people using a seperator from Lowes or Home Depot end up removing the filter inside. It clearly states not for use with synthetic oils. After a miles of driving they notice the catch can only fills up to a certain point then stops. Alot of people say it's the filter and some say it's just the size of the can, filling the catch can effectively shrinks the wide spot in the line. This results in less pressure drop and the performance of the can falls off.
I want something like the lowes/home depot setup but I want a filter for the oil vapors also. Does both our valve covers on LT1's have holes for pcv valves or just the passenger?
If you or anyone could make a part list of what they used that would be great. I really dont feel good about driving around with a K&N breather so I'm exploring all the setups I can. Also there is no home depot, lowes, Vato Zone, or Rice boys here so it's hard to find what I need fast.
I also have the BF412 inline filter on the passenger side valve cover like was mentioned above. It fits in there like it was supposed to be there, you just have to remove the elbow to get it in there. I usually change mine every 2 oil changes or sooner if it looks like it needs it, they are only about $5.00 from autozone.
The Best V8 Stories One Small Block at Time
The inline catch can is in the line that comes from the PCV valve in the driver side of the intake manifold and goes to a vaccum source in the intake manifold under the TB. I also took the internal filter out of the catch can, it says no synthetic oil on the side of it but that is what I use and it hasn't had any kind of effect on mine.
They are not on the same line. I probably could have just gotten away with the catch can but I already had installed the BF412 filter before I did the catch can. I couldn't find any other LT1 guys running the catch can when I did it so I wasn't sure how effective it would be, but I tried it and it definetly keeps alot of oil from going into the manifold. So far I have stopped about a 1/2 quart from going through the intake manifold.
If you have any more questions I will answer them the best I can. Maybe I can get some pics up sometime.
Most people using a seperator from Lowes or Home Depot end up removing the filter inside. It clearly states not for use with synthetic oils. After a miles of driving they notice the catch can only fills up to a certain point then stops. Alot of people say it's the filter and some say it's just the size of the can, filling the catch can effectively shrinks the wide spot in the line. This results in less pressure drop and the performance of the can falls off.
I want something like the lowes/home depot setup but I want a filter for the oil vapors also. Does both our valve covers on LT1's have holes for pcv valves or just the passenger?
If you or anyone could make a part list of what they used that would be great. I really dont feel good about driving around with a K&N breather so I'm exploring all the setups I can. Also there is no home depot, lowes, Vato Zone, or Rice boys here so it's hard to find what I need fast.
(1) Mini In-line Catch Can w/ 1/4 pipe thread inlet/outlet
(2) 1/4 inch pipe male pipe thread brass fittings with a nipple for 3/8 fuel line
(4) Small Hose clamps
(1 1/2-2 ft) 3/8 fuel line
That was all I needed for the catch can setup. I will put up a write up of the install later tonight.
a check valve in the pcv hose will mkae it so boost cant enter the crankcase
The inline catch can is in the line that comes from the PCV valve in the driver side of the intake manifold and goes to a vaccum source in the intake manifold under the TB. I also took the internal filter out of the catch can, it says no synthetic oil on the side of it but that is what I use and it hasn't had any kind of effect on mine.
They are not on the same line. I probably could have just gotten away with the catch can but I already had installed the BF412 filter before I did the catch can. I couldn't find any other LT1 guys running the catch can when I did it so I wasn't sure how effective it would be, but I tried it and it definetly keeps alot of oil from going into the manifold. So far I have stopped about a 1/2 quart from going through the intake manifold.
If you have any more questions I will answer them the best I can. Maybe I can get some pics up sometime.
I for one would definatley like to see some pics on this because im lost. PCV valve on the drivers side of the intake manifold?
Havent noticed that one on my car. I just pulled apart the throttle body to put on a bigger size and the only oil I noticed getting inside the intake was from the line comming off of the pcv valve on the passenger side valve cover. As oily as everything was I can see catching a quart of oil from that line.
a check valve in the pcv hose will mkae it so boost cant enter the crankcase
Havent noticed that one on my car. I just pulled apart the throttle body to put on a bigger size and the only oil I noticed getting inside the intake was from the line comming off of the pcv valve on the passenger side valve cover. As oily as everything was I can see catching a quart of oil from that line.
Havent noticed that one on my car. I just pulled apart the throttle body to put on a bigger size and the only oil I noticed getting inside the intake was from the line comming off of the pcv valve on the passenger side valve cover. As oily as everything was I can see catching a quart of oil from that line.
That is where my PCV valve is this is on the driver side of the intake manifold. The vaccume line that leaves the PCV valve runs down the drivers lide of the intake manifold and connects to a nipple coming out of the intake manifold right under the Throttle body. Most of the line is metal and about 5/16 in diameter exept the ends which are plastic. This line runs along the intake manifold under the fuel rail. This is the line that I removed and made up a new line from 3/8 fuel line with the catch can setup inline. You would not notice the oil that comes through this line because it would not come in through the throttle body it comes in through the PCV valve I believe and it is being pulled through the line from the nipple at the base of the intake. The PCV valve stands for Positive Crankcase Ventilation Valve so this nipple must be open to the lifter valley on the bottom of the intake this is where the PCV valve is pulling from.
The line on my car that comes from the passenger side valve cover is not the pcv valve that is just another vaccume line that goes to the TB. There is an elbow on the end of this line that could be confused with a PCV valve but it is not. I will try to get some pics this week maybe my car is just setup completely different but all of the other LT1's I have looked at looked just like mine.
Last edited by horsekilla 95TA; Apr 16, 2006 at 08:24 PM.
The line on my car that comes from the passenger side valve cover is not the pcv valve that is just another vaccume line that goes to the TB. There is an elbow on the end of this line that could be confused with a PCV valve but it is not. I will try to get some pics this week maybe my car is just setup completely different but all of the other LT1's I have looked at looked just like mine.
Yeah that's the fresh air hose. Based on description and diagrams in the FSM it sucks air out of the valve cover and also sucks air into it, aka recirculating like I said according to the FSM. driver's side VC has no openings. Passenger side has the hole for fresh air hose and for filler cap.
I removed my 10 month old Deutsch BF412 Breather Filter (replaced with new one) and sprayed a big hefty amount of brake cleaner inside of it and to my surprise what came out wasn't very brown at all. I didn't have time to take it apart, but I'll will take this one apart in a few months to see how much oil is trapped inside of it. The vent hose leading to the TB was dry..
I removed my 10 month old Deutsch BF412 Breather Filter (replaced with new one) and sprayed a big hefty amount of brake cleaner inside of it and to my surprise what came out wasn't very brown at all. I didn't have time to take it apart, but I'll will take this one apart in a few months to see how much oil is trapped inside of it. The vent hose leading to the TB was dry..





