What did you run your oil catch can lines too?
Why that won't work too well.
The Positive Crankcase Ventilation valve, or PCV Valve, is a one-way valve that ensures continual refreshment of the air inside a gasoline internal combustion engine's crankcase.
As an engine runs, the crankcase (containing the crankshaft and other parts) begins to collect combustion chamber gases that leak past the pistons. These gases contain compounds harmful to an engine, particularly hydrocarbons, which are just unburned fuel. If allowed to stay too long in the crankcase, or to collect to a too-high concentration, the harmful compounds begin to condense out of the crankcase's air and form sludge on the engine's interior surfaces. Sludge is bad for an engine. It can cause overheating, poor lubrication, and high emissions levels. To keep the crankcase air as clean as possible, some sort of ventilation system must be present.
Prior to the early 1960s, car gasoline engines ventilated directly to the atmosphere through a simple vent tube of some sort. Frequently this consisted of a pipe (the "road draft tube") that extended out from the crankcase down to the bottom of the engine compartment. The bottom of the pipe was open to the atmosphere, and was placed such that when the car was in motion a slight suction would be hopefully obtained, helping to extract combustion gases as they collected in the crankcase. The system was not positive though, as gases could travel both ways, or move not at all, if conditions were just right.
In 1952, Professor A. J. Haagen-Smit, of the California Institute of Technology at Pasadena, revealed that hydrocarbons were a primary constituent of smog, and that automobiles were a major source of those hydrocarbons. After some investigation, it became obvious that the road draft tube was allowing considerable amounts of hydrocarbons to enter the atmosphere. The solution was the PCV valve. California was the first US state to mandate installation of a PCV valve around the early 1960s, and the system slowly went nationwide by about 1966.
The PCV valve is only one part of the PCV system, which is essentially a closed-loop calibrated air leak, whereby the engine is forced to swallow its own combustion gases. Instead of the gases being vented to the atmosphere, gases are fed back into the intake manifold, to re-enter the combustion chamber as part of a fresh charge of air and fuel.
The PCV system consists of: 1) The breather tube , and 2) The PCV valve. The breather tube is just an open tube that connects the crankcase to a clean source of fresh air, such as the air cleaner body. The PCV valve connects the crankcase to the intake manifold from a location more-or-less opposite the breather connection. A typical location is the valve cover, although some engines place the valve in locations far from the valve cover.
Remember that all the air collected by the air cleaner goes through the intake manifold anyway. The PCV system just steals a little of it for its own purposes before giving it back to the intake tract again.
The system relies on the fact that the intake manifold's air pressure is usually lower than crankcase air pressure. The lower pressure of the manifold forces air to flow towards it, pulling air from the breather, through the crankcase (where it dilutes and mixes with combustion gases), through the PCV valve, and into the intake manifold.
Should the intake manifold's pressure be higher that of the crankcase (which can happen under certain conditions), the PCV valve closes to prevent reversal of the exhausted air back into the crankcase again. This is where the positive comes from in the name. Positive is basically a synonym for one-way.
It is critical that the parts of the PCV system be kept clean and open, otherwise air flow will not be correct. A plugged or malfunctioning PCV system will eventually damage an engine. PCV problems are primarily due to neglect or poor maintenance, typically engine oil change intervals that are inadequate for the engine's driving conditions. A poorly-maintained engine's PCV system will eventually become contaminated with oil, causing serious problems. If the engine's lubricating oil is changed with adequate frequency, the PCV system will remain clear practically forever.
The Positive Crankcase Ventilation valve, or PCV Valve, is a one-way valve that ensures continual refreshment of the air inside a gasoline internal combustion engine's crankcase.
As an engine runs, the crankcase (containing the crankshaft and other parts) begins to collect combustion chamber gases that leak past the pistons. These gases contain compounds harmful to an engine, particularly hydrocarbons, which are just unburned fuel. If allowed to stay too long in the crankcase, or to collect to a too-high concentration, the harmful compounds begin to condense out of the crankcase's air and form sludge on the engine's interior surfaces. Sludge is bad for an engine. It can cause overheating, poor lubrication, and high emissions levels. To keep the crankcase air as clean as possible, some sort of ventilation system must be present.
Prior to the early 1960s, car gasoline engines ventilated directly to the atmosphere through a simple vent tube of some sort. Frequently this consisted of a pipe (the "road draft tube") that extended out from the crankcase down to the bottom of the engine compartment. The bottom of the pipe was open to the atmosphere, and was placed such that when the car was in motion a slight suction would be hopefully obtained, helping to extract combustion gases as they collected in the crankcase. The system was not positive though, as gases could travel both ways, or move not at all, if conditions were just right.
In 1952, Professor A. J. Haagen-Smit, of the California Institute of Technology at Pasadena, revealed that hydrocarbons were a primary constituent of smog, and that automobiles were a major source of those hydrocarbons. After some investigation, it became obvious that the road draft tube was allowing considerable amounts of hydrocarbons to enter the atmosphere. The solution was the PCV valve. California was the first US state to mandate installation of a PCV valve around the early 1960s, and the system slowly went nationwide by about 1966.
The PCV valve is only one part of the PCV system, which is essentially a closed-loop calibrated air leak, whereby the engine is forced to swallow its own combustion gases. Instead of the gases being vented to the atmosphere, gases are fed back into the intake manifold, to re-enter the combustion chamber as part of a fresh charge of air and fuel.
The PCV system consists of: 1) The breather tube , and 2) The PCV valve. The breather tube is just an open tube that connects the crankcase to a clean source of fresh air, such as the air cleaner body. The PCV valve connects the crankcase to the intake manifold from a location more-or-less opposite the breather connection. A typical location is the valve cover, although some engines place the valve in locations far from the valve cover.
Remember that all the air collected by the air cleaner goes through the intake manifold anyway. The PCV system just steals a little of it for its own purposes before giving it back to the intake tract again.
The system relies on the fact that the intake manifold's air pressure is usually lower than crankcase air pressure. The lower pressure of the manifold forces air to flow towards it, pulling air from the breather, through the crankcase (where it dilutes and mixes with combustion gases), through the PCV valve, and into the intake manifold.
Should the intake manifold's pressure be higher that of the crankcase (which can happen under certain conditions), the PCV valve closes to prevent reversal of the exhausted air back into the crankcase again. This is where the positive comes from in the name. Positive is basically a synonym for one-way.
It is critical that the parts of the PCV system be kept clean and open, otherwise air flow will not be correct. A plugged or malfunctioning PCV system will eventually damage an engine. PCV problems are primarily due to neglect or poor maintenance, typically engine oil change intervals that are inadequate for the engine's driving conditions. A poorly-maintained engine's PCV system will eventually become contaminated with oil, causing serious problems. If the engine's lubricating oil is changed with adequate frequency, the PCV system will remain clear practically forever.
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Originally Posted by cfdfireman1
Why that won't work too well.
The Positive Crankcase Ventilation valve, or PCV Valve, is a one-way valve that ensures continual refreshment of the air inside a gasoline internal combustion engine's crankcase.
As an engine runs, the crankcase (containing the crankshaft and other parts) begins to collect combustion chamber gases that leak past the pistons. These gases contain compounds harmful to an engine, particularly hydrocarbons, which are just unburned fuel. If allowed to stay too long in the crankcase, or to collect to a too-high concentration, the harmful compounds begin to condense out of the crankcase's air and form sludge on the engine's interior surfaces. Sludge is bad for an engine. It can cause overheating, poor lubrication, and high emissions levels. To keep the crankcase air as clean as possible, some sort of ventilation system must be present.
Prior to the early 1960s, car gasoline engines ventilated directly to the atmosphere through a simple vent tube of some sort. Frequently this consisted of a pipe (the "road draft tube") that extended out from the crankcase down to the bottom of the engine compartment. The bottom of the pipe was open to the atmosphere, and was placed such that when the car was in motion a slight suction would be hopefully obtained, helping to extract combustion gases as they collected in the crankcase. The system was not positive though, as gases could travel both ways, or move not at all, if conditions were just right.
In 1952, Professor A. J. Haagen-Smit, of the California Institute of Technology at Pasadena, revealed that hydrocarbons were a primary constituent of smog, and that automobiles were a major source of those hydrocarbons. After some investigation, it became obvious that the road draft tube was allowing considerable amounts of hydrocarbons to enter the atmosphere. The solution was the PCV valve. California was the first US state to mandate installation of a PCV valve around the early 1960s, and the system slowly went nationwide by about 1966.
The PCV valve is only one part of the PCV system, which is essentially a closed-loop calibrated air leak, whereby the engine is forced to swallow its own combustion gases. Instead of the gases being vented to the atmosphere, gases are fed back into the intake manifold, to re-enter the combustion chamber as part of a fresh charge of air and fuel.
The PCV system consists of: 1) The breather tube , and 2) The PCV valve. The breather tube is just an open tube that connects the crankcase to a clean source of fresh air, such as the air cleaner body. The PCV valve connects the crankcase to the intake manifold from a location more-or-less opposite the breather connection. A typical location is the valve cover, although some engines place the valve in locations far from the valve cover.
Remember that all the air collected by the air cleaner goes through the intake manifold anyway. The PCV system just steals a little of it for its own purposes before giving it back to the intake tract again.
The system relies on the fact that the intake manifold's air pressure is usually lower than crankcase air pressure. The lower pressure of the manifold forces air to flow towards it, pulling air from the breather, through the crankcase (where it dilutes and mixes with combustion gases), through the PCV valve, and into the intake manifold.
Should the intake manifold's pressure be higher that of the crankcase (which can happen under certain conditions), the PCV valve closes to prevent reversal of the exhausted air back into the crankcase again. This is where the positive comes from in the name. Positive is basically a synonym for one-way.
It is critical that the parts of the PCV system be kept clean and open, otherwise air flow will not be correct. A plugged or malfunctioning PCV system will eventually damage an engine. PCV problems are primarily due to neglect or poor maintenance, typically engine oil change intervals that are inadequate for the engine's driving conditions. A poorly-maintained engine's PCV system will eventually become contaminated with oil, causing serious problems. If the engine's lubricating oil is changed with adequate frequency, the PCV system will remain clear practically forever.
The Positive Crankcase Ventilation valve, or PCV Valve, is a one-way valve that ensures continual refreshment of the air inside a gasoline internal combustion engine's crankcase.
As an engine runs, the crankcase (containing the crankshaft and other parts) begins to collect combustion chamber gases that leak past the pistons. These gases contain compounds harmful to an engine, particularly hydrocarbons, which are just unburned fuel. If allowed to stay too long in the crankcase, or to collect to a too-high concentration, the harmful compounds begin to condense out of the crankcase's air and form sludge on the engine's interior surfaces. Sludge is bad for an engine. It can cause overheating, poor lubrication, and high emissions levels. To keep the crankcase air as clean as possible, some sort of ventilation system must be present.
Prior to the early 1960s, car gasoline engines ventilated directly to the atmosphere through a simple vent tube of some sort. Frequently this consisted of a pipe (the "road draft tube") that extended out from the crankcase down to the bottom of the engine compartment. The bottom of the pipe was open to the atmosphere, and was placed such that when the car was in motion a slight suction would be hopefully obtained, helping to extract combustion gases as they collected in the crankcase. The system was not positive though, as gases could travel both ways, or move not at all, if conditions were just right.
In 1952, Professor A. J. Haagen-Smit, of the California Institute of Technology at Pasadena, revealed that hydrocarbons were a primary constituent of smog, and that automobiles were a major source of those hydrocarbons. After some investigation, it became obvious that the road draft tube was allowing considerable amounts of hydrocarbons to enter the atmosphere. The solution was the PCV valve. California was the first US state to mandate installation of a PCV valve around the early 1960s, and the system slowly went nationwide by about 1966.
The PCV valve is only one part of the PCV system, which is essentially a closed-loop calibrated air leak, whereby the engine is forced to swallow its own combustion gases. Instead of the gases being vented to the atmosphere, gases are fed back into the intake manifold, to re-enter the combustion chamber as part of a fresh charge of air and fuel.
The PCV system consists of: 1) The breather tube , and 2) The PCV valve. The breather tube is just an open tube that connects the crankcase to a clean source of fresh air, such as the air cleaner body. The PCV valve connects the crankcase to the intake manifold from a location more-or-less opposite the breather connection. A typical location is the valve cover, although some engines place the valve in locations far from the valve cover.
Remember that all the air collected by the air cleaner goes through the intake manifold anyway. The PCV system just steals a little of it for its own purposes before giving it back to the intake tract again.
The system relies on the fact that the intake manifold's air pressure is usually lower than crankcase air pressure. The lower pressure of the manifold forces air to flow towards it, pulling air from the breather, through the crankcase (where it dilutes and mixes with combustion gases), through the PCV valve, and into the intake manifold.
Should the intake manifold's pressure be higher that of the crankcase (which can happen under certain conditions), the PCV valve closes to prevent reversal of the exhausted air back into the crankcase again. This is where the positive comes from in the name. Positive is basically a synonym for one-way.
It is critical that the parts of the PCV system be kept clean and open, otherwise air flow will not be correct. A plugged or malfunctioning PCV system will eventually damage an engine. PCV problems are primarily due to neglect or poor maintenance, typically engine oil change intervals that are inadequate for the engine's driving conditions. A poorly-maintained engine's PCV system will eventually become contaminated with oil, causing serious problems. If the engine's lubricating oil is changed with adequate frequency, the PCV system will remain clear practically forever.
Wow what a write-up. Can you put it in "LAMENS " terms for me ? Just tell me how to hook up my catch can . I have two inlets on the can with no filter breather thanks man
If you can only afford 1 catch can put it in the pcv line but a turbo charged engine will blow boost past the pvc and out the vent side along with oil and water vapor into your intake getting your turbo and intercooler all crapped up.
You have 2 inlets on the can?? What kind of can is it?
You have 2 inlets on the can?? What kind of can is it?
Last edited by cfdfireman1; Sep 12, 2006 at 09:20 AM.
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Its a Greddy Oval style canister. I have it mounted and one tube is going to the front right side of the vavle cover as pictured below. So i assume i run the other line to my intake tube?
Originally Posted by EVOIX4me
I am pretty sure that the PCV valve is on the backside of the valve cover . Im not sure what the line is called that you have in the pic above but i know that it hooks up to one inlet on the catch can. Where do you have your other line going if the intake tube is closed off ?
Last edited by skiracer; Sep 12, 2006 at 08:56 AM.
You tell me.
Originally Posted by EVOIX4me
Its a Greddy Oval style canister. I have it mounted and one tube is going to the front right side of the vavle cover as pictured below. So i assume i run the other line to my intake tube?
Read this thread then get back to me.
https://www.evolutionm.net/forums/sh...d.php?t=200793
https://www.evolutionm.net/forums/sh...ighlight=catch
I posted this a while back. This thread shows the correct two locations under the hood. Oil is being injected into the intake tract in two different locations: the intake manifold and the intake tube. If you place an inline fuel filter at these locations, you will eliminate 99% of the oil, and you won't have to vent either of these lines to the atmosphere. Also, the fuel filter will NOT affect PCV valve operation!
I posted this a while back. This thread shows the correct two locations under the hood. Oil is being injected into the intake tract in two different locations: the intake manifold and the intake tube. If you place an inline fuel filter at these locations, you will eliminate 99% of the oil, and you won't have to vent either of these lines to the atmosphere. Also, the fuel filter will NOT affect PCV valve operation!
Last edited by sonicnofadz; Sep 12, 2006 at 10:04 AM.
^Very good info, i have been keeping up on the catch can talk for a while now, my question is what if you dont have a nipple on your intake pipe to complete the setup? I have a buschur turbo kit and intake but no nipple on the intake. I have to zip tie my dipstick down b/c of the positive pressure in the crank case...
suggestions?
suggestions?
Originally Posted by Nez136
^Very good info, i have been keeping up on the catch can talk for a while now, my question is what if you dont have a nipple on your intake pipe to complete the setup? I have a buschur turbo kit and intake but no nipple on the intake. I have to zip tie my dipstick down b/c of the positive pressure in the crank case...
suggestions?
suggestions?
Originally Posted by sonicnofadz
Purchase a inline fuel filter, place it on a tube going from the valve cover, and let it vent to the atmosphere. The filter will be there to prevent moisture from entering your valve cover + head. As long as the PCV valve is still in place, your dipstick really shouldn't be popping off like that. Is there a catch can on the PCV valve? If so, what kind? If I were you I'd check your compression (seems like alot of excessive blow-by). Also, you might just want to purchase a brand new dipstick, it might stay in place better (since the rubber material will be of a larger diameter).
I have heard of a couple other cars with the same problem...
I have a weapon R catch can that mounts to the front strut bar. I followed these instructions exactly.
http://www.evomoto.com/tech_info.php...3_6&tech_id=21
http://www.evomoto.com/tech_info.php...3_6&tech_id=21
Originally Posted by Nez136
Im not running a catch can at all. I ran a leak down test and the rings were sealing fine...
I have heard of a couple other cars with the same problem...
I have heard of a couple other cars with the same problem...
Blow & suck.
Originally Posted by Nez136
i'll see what i can do, how do i test?
Air should move in 1 direction through the pcv and the piston inside should move freely when you shake the valve back and forth.
(sonicnofadz) I would stay away from the inline filter with the check valve in it on the front hose. Air should be able to move in 2 directions at that point.