Doing a PCV / Catch Can Write-up...tell me what you think!
11-12-2002, 11:58 AM
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Doing a PCV / Catch Can Write-up...tell me what you think!
I just started writing the article about an hour or two ago, and am still actually learning myself but wanted to see what everyone else thought of the article. Pictures will accompany the article but for now just words will have to do. Any and all feedback, suggestions, and comments is/are welcome.
In an engine, there are two areas of air pockets in which the air is not directly related to combustion. Within these two areas, oil and air are separated from the combustion chambers and coolant jackets for the purpose of lubrication of the engine. The upper air and oil pocket is constrained by the valve cover at the top, and the valve seals at the lower end. The bottom air and oild pocket is constrained by the piston rings at the top and the oil pan in the bottom.
In a perfect world, these two lubrication areas would not pressurize. However, in real life compression leaks by valve seals and piston rings in what is called blow-by. Blow by introduces pressure into the two pockets of air and oil (the head and the crankcase). In addition, heat caused as a byproduct of combustion causes air molecules to expand which also causes the pressure to increase in these lubrication areas. If no ventilation system was employed to release this pressure, it would find the point of least resistance to escape, which could be oil seals...or worse.
To relieve this pressure, a system called Positive Crankcase Ventilation (PCV for short) is used. It is a closed system that takes the pressurized air and oil vapor from these two lubrication areas and introduces it back into the combustion chamber, by way of vacuum caused by the intake charge.
On the bottom end, most VTEC engines use a breather chamber located at the back of the block, underneath the intake manifold. The purpose of this breather chamber is to separate air from oil. The oil is returned to the crankcase while air is sucked into the intake charge. A valve called the PCV valve controls the flow of this breather chamber valve to the intake manifold. The PCV valve is spring loaded and detects variations in pressure between the crankcase and intake manifold and opens or closes accordingly.
On the top end, the valve cover has a thirty degree fitting and the intake has an opposing thirty degree fitting, both of which are attached by a hose. As the intake charge creates a vacuum, oil vapors from within the valve cover are sucked into the intake stream for combustion again. This reuse of oil vapors is good for vehicle emmisions and consequently, the environment.
However, the factory system does not do an efficient job of filtering out oil from air. Oil mixed with higher octane gasoline will effectively lower the octane rating of the mixture. In simplified terms, octane is used to rate the resistance to knock of a substance. In high compression or high boost applications, this can be fatal to an engine. The detonation caused by lower octane combustion will eventually destroy an engine if not monitored and appropriately adjusted for. By the same token, removing this oil from the combustion process allows higher compression and higher boost applications to be run more reliably. What can be done to make the Honda breather chamber system more effective?
A catch can is a cylinderical device with an inlet fitting, outlet fitting, and internal baffeling which further filters out oil from air. Nicer catch cans can come with internal baffeling already in place; an external viewing glass to check the oil level; and sometimes come with a drain valve which allows the user to drain oil from the catch can without having to remove it. If baffeling is not included with a kit, steel wool has been used in the past.
A typical Honda catch can set-up is added in addition to the existing breather cahmber system. The catch can inlet attaches to the PCV valve by a hose. The oil and air vapor is drawn into the catch can and the relatively clean air releases back into the intake charge via a fitting on the intake manifold. Reinforced clear hoses are typically used to connect the whole system. These hoses are used because the vacuum has been known to collapse hoses and because the clear hose is convenient to see that the system is working properly.
[Modified by mojoGSR92, 4:36 PM 11/12/2002]
In an engine, there are two areas of air pockets in which the air is not directly related to combustion. Within these two areas, oil and air are separated from the combustion chambers and coolant jackets for the purpose of lubrication of the engine. The upper air and oil pocket is constrained by the valve cover at the top, and the valve seals at the lower end. The bottom air and oild pocket is constrained by the piston rings at the top and the oil pan in the bottom.
In a perfect world, these two lubrication areas would not pressurize. However, in real life compression leaks by valve seals and piston rings in what is called blow-by. Blow by introduces pressure into the two pockets of air and oil (the head and the crankcase). In addition, heat caused as a byproduct of combustion causes air molecules to expand which also causes the pressure to increase in these lubrication areas. If no ventilation system was employed to release this pressure, it would find the point of least resistance to escape, which could be oil seals...or worse.
To relieve this pressure, a system called Positive Crankcase Ventilation (PCV for short) is used. It is a closed system that takes the pressurized air and oil vapor from these two lubrication areas and introduces it back into the combustion chamber, by way of vacuum caused by the intake charge.
On the bottom end, most VTEC engines use a breather chamber located at the back of the block, underneath the intake manifold. The purpose of this breather chamber is to separate air from oil. The oil is returned to the crankcase while air is sucked into the intake charge. A valve called the PCV valve controls the flow of this breather chamber valve to the intake manifold. The PCV valve is spring loaded and detects variations in pressure between the crankcase and intake manifold and opens or closes accordingly.
On the top end, the valve cover has a thirty degree fitting and the intake has an opposing thirty degree fitting, both of which are attached by a hose. As the intake charge creates a vacuum, oil vapors from within the valve cover are sucked into the intake stream for combustion again. This reuse of oil vapors is good for vehicle emmisions and consequently, the environment.
However, the factory system does not do an efficient job of filtering out oil from air. Oil mixed with higher octane gasoline will effectively lower the octane rating of the mixture. In simplified terms, octane is used to rate the resistance to knock of a substance. In high compression or high boost applications, this can be fatal to an engine. The detonation caused by lower octane combustion will eventually destroy an engine if not monitored and appropriately adjusted for. By the same token, removing this oil from the combustion process allows higher compression and higher boost applications to be run more reliably. What can be done to make the Honda breather chamber system more effective?
A catch can is a cylinderical device with an inlet fitting, outlet fitting, and internal baffeling which further filters out oil from air. Nicer catch cans can come with internal baffeling already in place; an external viewing glass to check the oil level; and sometimes come with a drain valve which allows the user to drain oil from the catch can without having to remove it. If baffeling is not included with a kit, steel wool has been used in the past.
A typical Honda catch can set-up is added in addition to the existing breather cahmber system. The catch can inlet attaches to the PCV valve by a hose. The oil and air vapor is drawn into the catch can and the relatively clean air releases back into the intake charge via a fitting on the intake manifold. Reinforced clear hoses are typically used to connect the whole system. These hoses are used because the vacuum has been known to collapse hoses and because the clear hose is convenient to see that the system is working properly.
[Modified by mojoGSR92, 4:36 PM 11/12/2002]
11-12-2002, 12:25 PM
#2
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Re: Doing a PCV / Catch Can Write-up...tell me what you think! (mojoGSR92)
Note: These are only suggestions to stay on subject and make reading easier. In no way am I dissing your writing and in fact I commend you for taking the time to write on this not so often discussed topic. :Award:
In an engine, there are many pockets of air. Two of which we will be discussing. The air trapped between the head and the valve cover, and the air between the oil pan and the piston rings.
Note: Oil misspelled in first paragraph. "Oild"
"Within these two areas, oil and air are separated from the combustion chambers and coolant jackets for the purpose of lubrication of the engine."
Oil flows within these two areas to lubricate the reciprocating (moving) parts of the engine.
Over use of Postivie Crank Ventalation. That can be used once and PCV the rest of the time.
"These hoses are used because the vacuum has been known to collapse hoses and because the clear hose is convenient to see that the system is working properly."
Suggest "standard hoses" instead of using hoses twice in the same line to refer to two different items.
In an engine, there are many pockets of air. Two of which we will be discussing. The air trapped between the head and the valve cover, and the air between the oil pan and the piston rings.
Note: Oil misspelled in first paragraph. "Oild"
"Within these two areas, oil and air are separated from the combustion chambers and coolant jackets for the purpose of lubrication of the engine."
Oil flows within these two areas to lubricate the reciprocating (moving) parts of the engine.
Over use of Postivie Crank Ventalation. That can be used once and PCV the rest of the time.
"These hoses are used because the vacuum has been known to collapse hoses and because the clear hose is convenient to see that the system is working properly."
Suggest "standard hoses" instead of using hoses twice in the same line to refer to two different items.
11-12-2002, 12:32 PM
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Re: Doing a PCV / Catch Can Write-up...tell me what you think! (Spade)
Thanks for the constructive criticism! 
I haven't revised it at all so I expected some mistakes and some pieces that weren't so clear. I'll revise it with your suggestions in mind.
I hope that this article clears up some questions and confusion in the future.
[Modified by mojoGSR92, 4:37 PM 11/12/2002]
I haven't revised it at all so I expected some mistakes and some pieces that weren't so clear. I'll revise it with your suggestions in mind.I hope that this article clears up some questions and confusion in the future.
[Modified by mojoGSR92, 4:37 PM 11/12/2002]
11-12-2002, 12:50 PM
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Re: Doing a PCV / Catch Can Write-up...tell me what you think! (Spade)
I just started writing the article about an hour or two ago, and am still actually learning myself but wanted to see what everyone else thought of the article. Pictures will accompany the article but for now just words will have to do. Any and all feedback, suggestions, and comments is/are welcome.
In an engine, there are two areas of air pockets in which the air is not directly related to combustion. Within these two areas, oil and air are separated from the combustion chambers and coolant jackets for the purpose of lubrication of the engine. The upper air and oil pocket is constrained by the valve cover at the top, and the valve seals at the lower end. The bottom air and oil pocket is constrained by the piston rings at the top and the oil pan in the bottom.
In a perfect world, these two lubrication areas would not pressurize. However, in real life compression leaks by valve seals and piston rings in what is called blow-by. Blow by introduces pressure into the two pockets of air and oil (the head and the crankcase). In addition, heat caused as a by-product of combustion causes air molecules to expand which also causes the pressure to increase in these lubrication areas. If no ventilation system were employed to release this pressure, it would find the point of least resistance to escape, which could be oil seals...or worse.
To relieve this pressure, a system called Positive Crankcase Ventilation ("PCV") is used. It is a closed system that takes the pressurized air and oil vapour from these two lubrication areas and introduces it back into the combustion chamber, by way of vacuum caused by the intake charge.
On the bottom end, most VTEC engines use a breather chamber located at the back of the block, underneath the intake manifold. The purpose of this breather chamber is to separate air from oil. The oil is returned to the crankcase while air is sucked into the intake charge. A valve called the PCV valve controls the flow of this breather chamber valve to the intake manifold. The PCV valve is spring-loaded and detects variations in pressure between the crankcase and intake manifold and opens or closes accordingly.
On the top end, the valve cover has a thirty-degree fitting and the intake has an opposing thirty-degree fitting, both of which are attached by a hose. As the intake charge creates a vacuum, oil vapours from within the valve cover are sucked into the intake stream for combustion again. This reuse of oil vapours is good for vehicle emissions and consequently, the environment.
However, the factory system does not do an efficient job of filtering out oil from air. Oil mixed with higher octane gasoline will effectively lower the octane rating of the mixture. In simplified terms, octane is used to rate the resistance to knock of a substance. In high compression or high boost applications, this can be fatal to an engine. The detonation caused by lower octane combustion will eventually destroy an engine if not monitored and appropriately adjusted for. By the same token, removing this oil from the combustion process allows higher compression and higher boost applications to be run more reliably. What can be done to make the Honda breather chamber system more effective?
A catch can is a cylindrical device with an inlet fitting, outlet fitting, and internal baffling which further filters out oil from air. NB the Honda catch can IS baffled Nicer catch cans can come with internal baffling already in place; an external viewing glass to check the oil level; and sometimes come with a drain valve which allows the user to drain oil from the catch can without having to remove it. If baffling is not included with a kit, steel wool BAD idea, the 'wool' can become free moving and get into your combustion chambers - better to use s/steel scouring pads has been used in the past.
A typical Honda catch can set-up is used in addition to the existing breather chamber system. The catch can inlet attaches to the PCV valve by a hose. The oil and air vapour is drawn into the catch can and the relatively clean air releases back into the intake charge via a fitting on the intake manifold. Reinforced clear hoses are typically used to connect the whole system. These hoses are used because the vacuum has been known to collapse hoses and because the clear hose is convenient to see that the system is working properly.
--------------------
nice, all your own work? flows well - a little wordy, but it's all good.
i have speel cheked for you and added a few comments in bold
HTH,
t..
In an engine, there are two areas of air pockets in which the air is not directly related to combustion. Within these two areas, oil and air are separated from the combustion chambers and coolant jackets for the purpose of lubrication of the engine. The upper air and oil pocket is constrained by the valve cover at the top, and the valve seals at the lower end. The bottom air and oil pocket is constrained by the piston rings at the top and the oil pan in the bottom.
In a perfect world, these two lubrication areas would not pressurize. However, in real life compression leaks by valve seals and piston rings in what is called blow-by. Blow by introduces pressure into the two pockets of air and oil (the head and the crankcase). In addition, heat caused as a by-product of combustion causes air molecules to expand which also causes the pressure to increase in these lubrication areas. If no ventilation system were employed to release this pressure, it would find the point of least resistance to escape, which could be oil seals...or worse.
To relieve this pressure, a system called Positive Crankcase Ventilation ("PCV") is used. It is a closed system that takes the pressurized air and oil vapour from these two lubrication areas and introduces it back into the combustion chamber, by way of vacuum caused by the intake charge.
On the bottom end, most VTEC engines use a breather chamber located at the back of the block, underneath the intake manifold. The purpose of this breather chamber is to separate air from oil. The oil is returned to the crankcase while air is sucked into the intake charge. A valve called the PCV valve controls the flow of this breather chamber valve to the intake manifold. The PCV valve is spring-loaded and detects variations in pressure between the crankcase and intake manifold and opens or closes accordingly.
On the top end, the valve cover has a thirty-degree fitting and the intake has an opposing thirty-degree fitting, both of which are attached by a hose. As the intake charge creates a vacuum, oil vapours from within the valve cover are sucked into the intake stream for combustion again. This reuse of oil vapours is good for vehicle emissions and consequently, the environment.
However, the factory system does not do an efficient job of filtering out oil from air. Oil mixed with higher octane gasoline will effectively lower the octane rating of the mixture. In simplified terms, octane is used to rate the resistance to knock of a substance. In high compression or high boost applications, this can be fatal to an engine. The detonation caused by lower octane combustion will eventually destroy an engine if not monitored and appropriately adjusted for. By the same token, removing this oil from the combustion process allows higher compression and higher boost applications to be run more reliably. What can be done to make the Honda breather chamber system more effective?
A catch can is a cylindrical device with an inlet fitting, outlet fitting, and internal baffling which further filters out oil from air. NB the Honda catch can IS baffled Nicer catch cans can come with internal baffling already in place; an external viewing glass to check the oil level; and sometimes come with a drain valve which allows the user to drain oil from the catch can without having to remove it. If baffling is not included with a kit, steel wool BAD idea, the 'wool' can become free moving and get into your combustion chambers - better to use s/steel scouring pads has been used in the past.
A typical Honda catch can set-up is used in addition to the existing breather chamber system. The catch can inlet attaches to the PCV valve by a hose. The oil and air vapour is drawn into the catch can and the relatively clean air releases back into the intake charge via a fitting on the intake manifold. Reinforced clear hoses are typically used to connect the whole system. These hoses are used because the vacuum has been known to collapse hoses and because the clear hose is convenient to see that the system is working properly.
--------------------
nice, all your own work? flows well - a little wordy, but it's all good.
i have speel cheked for you and added a few comments in bold
HTH,
t..
11-14-2002, 11:51 AM
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Re: Doing a PCV / Catch Can Write-up...tell me what you think! (mojoGSR92)
<FONT COLOR="orange">The new and improved article. Tell me what you think:</FONT>
In an engine, there are many pockets of air. Two pockets of air will be discussed in this article: the area between the valve cover and valve seals, and the area between the piston rings and oil pan. Within these two air pockets, oil is used to lubricate the moving parts of the engine. As the engine internals rotate, oil mixes with air and becomes oil vapor.
In a perfect world, these two lubrication areas would not pressurize. However, in real life compression leaks by valve seals and piston rings in what is called blow-by. Blow-by introduces pressure into the two pockets of air and oil (the head and the crankcase). In addition, heat from combustion causes air molecules to expand which also causes the pressure to increase in these two air pockets. If no ventilation system were employed to release this pressure, it would find the point of least resistance to escape, which could be through oil seals...or worse.
http://www.imagestation.com/picture/...d.gif.orig.gif
To relieve this pressure, a system called the Positive Crankcase Ventilation (PCV) is used. It is a closed system that takes the pressurized oil vapor from these two lubrication areas and introduces it back into the combustion chamber, by way of vacuum that comes from the intake charge. It is necessary for the system to be a closed system, otherwise the vacuum will not work. Using what is commonly called a breather filter on your valve cover allows the system to be open to ambient air. The vacuum-driven PCV system will cease to work and this can damage an engine.
The valve cover has a thirty-degree fitting and the intake has an opposing thirty-degree fitting which are connected by a hose. Air is sucked into the valve cover from the intake tube. This intake tube air flows down through the block to the crankcase, where it makes its way to the Honda breather chamber. Most B-series engines use a baffled breather chamber located at the back of the block, underneath the intake manifold. The purpose of this breather chamber is to separate air from oil. The oil is returned to the crankcase while the air continues on to the PCV valve. The PCV valve contains a spring-loaded plunger. When the engine starts, the plunger in the PCV valve is lifted in proportion to intake manifold vacuum and air is drawn directly into the intake manifold. The process then starts all over again.
However, the factory system often can not always do an efficient job of filtering out oil from air. Modified engines with higher compression, turbochargers, or superchargers can be too much for the existing PCV system. As a result, oil mixed with higher-octane gasoline can effectively lower the octane rating of the mixture. In simplified terms, octane is used to rate the resistance to knock of a substance. In high compression or high boost applications, unexpectedly lowering the octane rating can cause detonation that is fatal to an engine if undetected. By the same token, removing this oil from the combustion process allows higher compression and higher boost applications to be run more reliably. What can be done to make the Honda breather chamber system more effective?
A catch can is typically cylindrical in shape and has an inlet fitting, outlet fitting, and internal baffling which further filters out oil from air. Nicer catch cans can come with internal baffling already in place; an external viewing glass to check the oil level; and sometimes come with a drain valve which allows the user to drain oil from the catch can without having to remove it. Brand names include Jaz, Cusco, and Moroso among others, but any container that is suitable to hold a vacuum, tapping in fittings, and the environment of an engine bay will work. If baffling is not included with a kit, the user will have to install a material to catch the oil as it goes through the catch can but which will not release free particles into the engine. I have heard of steel wool being used for a filtering medium, but the idea of steel wool bits floating around in an engine is sure to make an engine builder cringe.
A typical Honda catch can set-up is used in addition to the existing Honda breather chamber system. The catch can inlet attaches to the PCV valve by a hose. The oil and air vapor is drawn into the catch can and the relatively clean air releases back into the intake charge via an existing fitting on the intake manifold. Reinforced clear hoses are typically used to connect the whole system. These hoses are used because the vacuum has been known to collapse standard hoses and because the clear hose is convenient to view that the system is working properly.
Another variation of a Honda catch can set-up moves the PCV valve onto the catch-can itself. The inlet comes from the Honda breather chamber and typically connects to the side of the catch-can. A PCV valve is sealed onto the top of the catch can, and the outlet connects from the PCV valve to the existing intake manifold fitting. A good write-up of this set-up can be found here: http://www.geocities.com/bretq/DIY_O...tructions.html
In an engine, there are many pockets of air. Two pockets of air will be discussed in this article: the area between the valve cover and valve seals, and the area between the piston rings and oil pan. Within these two air pockets, oil is used to lubricate the moving parts of the engine. As the engine internals rotate, oil mixes with air and becomes oil vapor.
In a perfect world, these two lubrication areas would not pressurize. However, in real life compression leaks by valve seals and piston rings in what is called blow-by. Blow-by introduces pressure into the two pockets of air and oil (the head and the crankcase). In addition, heat from combustion causes air molecules to expand which also causes the pressure to increase in these two air pockets. If no ventilation system were employed to release this pressure, it would find the point of least resistance to escape, which could be through oil seals...or worse.
http://www.imagestation.com/picture/...d.gif.orig.gif
To relieve this pressure, a system called the Positive Crankcase Ventilation (PCV) is used. It is a closed system that takes the pressurized oil vapor from these two lubrication areas and introduces it back into the combustion chamber, by way of vacuum that comes from the intake charge. It is necessary for the system to be a closed system, otherwise the vacuum will not work. Using what is commonly called a breather filter on your valve cover allows the system to be open to ambient air. The vacuum-driven PCV system will cease to work and this can damage an engine.
The valve cover has a thirty-degree fitting and the intake has an opposing thirty-degree fitting which are connected by a hose. Air is sucked into the valve cover from the intake tube. This intake tube air flows down through the block to the crankcase, where it makes its way to the Honda breather chamber. Most B-series engines use a baffled breather chamber located at the back of the block, underneath the intake manifold. The purpose of this breather chamber is to separate air from oil. The oil is returned to the crankcase while the air continues on to the PCV valve. The PCV valve contains a spring-loaded plunger. When the engine starts, the plunger in the PCV valve is lifted in proportion to intake manifold vacuum and air is drawn directly into the intake manifold. The process then starts all over again.
However, the factory system often can not always do an efficient job of filtering out oil from air. Modified engines with higher compression, turbochargers, or superchargers can be too much for the existing PCV system. As a result, oil mixed with higher-octane gasoline can effectively lower the octane rating of the mixture. In simplified terms, octane is used to rate the resistance to knock of a substance. In high compression or high boost applications, unexpectedly lowering the octane rating can cause detonation that is fatal to an engine if undetected. By the same token, removing this oil from the combustion process allows higher compression and higher boost applications to be run more reliably. What can be done to make the Honda breather chamber system more effective?
A catch can is typically cylindrical in shape and has an inlet fitting, outlet fitting, and internal baffling which further filters out oil from air. Nicer catch cans can come with internal baffling already in place; an external viewing glass to check the oil level; and sometimes come with a drain valve which allows the user to drain oil from the catch can without having to remove it. Brand names include Jaz, Cusco, and Moroso among others, but any container that is suitable to hold a vacuum, tapping in fittings, and the environment of an engine bay will work. If baffling is not included with a kit, the user will have to install a material to catch the oil as it goes through the catch can but which will not release free particles into the engine. I have heard of steel wool being used for a filtering medium, but the idea of steel wool bits floating around in an engine is sure to make an engine builder cringe.
A typical Honda catch can set-up is used in addition to the existing Honda breather chamber system. The catch can inlet attaches to the PCV valve by a hose. The oil and air vapor is drawn into the catch can and the relatively clean air releases back into the intake charge via an existing fitting on the intake manifold. Reinforced clear hoses are typically used to connect the whole system. These hoses are used because the vacuum has been known to collapse standard hoses and because the clear hose is convenient to view that the system is working properly.
Another variation of a Honda catch can set-up moves the PCV valve onto the catch-can itself. The inlet comes from the Honda breather chamber and typically connects to the side of the catch-can. A PCV valve is sealed onto the top of the catch can, and the outlet connects from the PCV valve to the existing intake manifold fitting. A good write-up of this set-up can be found here: http://www.geocities.com/bretq/DIY_O...tructions.html
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11-22-2002, 08:39 PM
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Re: Doing a PCV / Catch Can Write-up...tell me what you think! (mojoGSR92)
i rec. a catch can to everyone it's the best $100 you'll spend. Helped me on emission and this thing really does work i have cusco can. i believe srr makes a cheaper one.
i have cusco can. i believe srr makes a cheaper one.
11-27-2002, 11:12 AM
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Re: Doing a PCV / Catch Can Write-up...tell me what you think! (SleeperEG6)
I came across all these posts on catch-cans. The main reason PCV systems were developed by car mfgs was emissions(not performance).
The old muscle cars had breather tubes venting to the atmosphere. Basically a hole in the valve cover with some sort of filtering device to make sure oil wouldn't go spewing out of the hole. This relieved crankcase pressure when it got to high.
Once the car mfgers were hit with emission standards, they had to figure out of way of handling these 'emissions' from the breather tube so as not to pollute the atmosphere. They rerouted these 'emissions' back into the intake.. end of harmful emissions.
If you're not concerned about emissions, get a breather tube going to the atmosphere and plug up the hole going to the IM. You seals won't blow and excess crank pressure will be relieved on its own.
If you are concerned about emissions, get a catch-can.
The old muscle cars had breather tubes venting to the atmosphere. Basically a hole in the valve cover with some sort of filtering device to make sure oil wouldn't go spewing out of the hole. This relieved crankcase pressure when it got to high.
Once the car mfgers were hit with emission standards, they had to figure out of way of handling these 'emissions' from the breather tube so as not to pollute the atmosphere. They rerouted these 'emissions' back into the intake.. end of harmful emissions.
If you're not concerned about emissions, get a breather tube going to the atmosphere and plug up the hole going to the IM. You seals won't blow and excess crank pressure will be relieved on its own.
If you are concerned about emissions, get a catch-can.
12-10-2002, 09:20 PM
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Re: Doing a PCV / Catch Can Write-up...tell me what you think! (mojoGSR92)
what size did you use? 9mm or 15mm and why? I am unsure on the size meanings. Thanks
12-11-2002, 02:16 AM
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Re: Doing a PCV / Catch Can Write-up...tell me what you think! (Jackson4Door)
Everything looks great so far!
I've just recently tried to grasp the whole concept of this catchcan fiasco and have come across the picture below.
As far as I can tell, it IS a Moroso can and I doubt anybody will deny it. But what I really like about it is the fact it says:
.....as well as a tank drain-back system to return excess oil to the crankcase under light throttle and deceleration.
Taken from the entire paragraph here:
The new ENDYN breather kit uses a remote (modified) Moroso tank to separate oil vapors from the air that the engine inhales via the PCV valve, provides two large diameter block located outlets for excessive crankcase pressure, an (off-road only) breather filter to vent vapors to atmosphere, as well as a tank drain-back system to return excess oil to the crankcase under light throttle and deceleration.
154.00USD is a bit steep for us Canadians here, so I'm looking for an alternative to building my own can along with the same features....
Any other insights or how you can make conventional catchcans have that drainback feature?
I've just recently tried to grasp the whole concept of this catchcan fiasco and have come across the picture below.
As far as I can tell, it IS a Moroso can and I doubt anybody will deny it. But what I really like about it is the fact it says:
.....as well as a tank drain-back system to return excess oil to the crankcase under light throttle and deceleration.
Taken from the entire paragraph here:
The new ENDYN breather kit uses a remote (modified) Moroso tank to separate oil vapors from the air that the engine inhales via the PCV valve, provides two large diameter block located outlets for excessive crankcase pressure, an (off-road only) breather filter to vent vapors to atmosphere, as well as a tank drain-back system to return excess oil to the crankcase under light throttle and deceleration.
154.00USD is a bit steep for us Canadians here, so I'm looking for an alternative to building my own can along with the same features....
Any other insights or how you can make conventional catchcans have that drainback feature?
12-11-2002, 06:11 AM
#12
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Re: Doing a PCV / Catch Can Write-up...tell me what you think! (RagingAngel)
I pieced my kit together and it is similar to Endyns.
You can get the Moroso dry sump breather tank from Jegs.com.
I got the fittings from Lowe's (home improvement place) and from a pipe/brass fittings store.
The hose I used came from Home Depot, SKU #705065, and is high pressure vinyl braided clear tubing, very strong.
I think it all cost about $85 usd total.
Yes, the drain back feature is very crucial unless you like adding 1/2 quart every 500 miles or so.
[Modified by Jeff C, 10:12 AM 12/11/2002]
You can get the Moroso dry sump breather tank from Jegs.com.
I got the fittings from Lowe's (home improvement place) and from a pipe/brass fittings store.
The hose I used came from Home Depot, SKU #705065, and is high pressure vinyl braided clear tubing, very strong.
I think it all cost about $85 usd total.
Yes, the drain back feature is very crucial unless you like adding 1/2 quart every 500 miles or so.
[Modified by Jeff C, 10:12 AM 12/11/2002]
12-11-2002, 01:48 PM
#13
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Re: Doing a PCV / Catch Can Write-up...tell me what you think! (Jeff C)
does anybody actually have that Endyn kit pictured?
I know a local shop here has it and I wanted to ask more questions about it before they put it in their race car, but now I haven't got the chance.
I'm interested in finding the two nozzles that are pictured left and right right below the Moroso can in the pic I posted.
I know a local shop here has it and I wanted to ask more questions about it before they put it in their race car, but now I haven't got the chance.
I'm interested in finding the two nozzles that are pictured left and right right below the Moroso can in the pic I posted.
01-06-2003, 08:55 AM
#14
Re: Doing a PCV / Catch Can Write-up...tell me what you think! (RagingAngel)
the home depot high pressure clear tubing will collapse. it holds up longer than the low pressure one, but eventually the heat warps it. its best to use fuel line hose or something.
btw, my can > *
btw, my can > *
01-06-2003, 11:22 AM
#17
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Re: Doing a PCV / Catch Can Write-up...tell me what you think! (BillyBob)
Hey... what about the valve cover? A vacuum is required to draw the vapors out of the valve cover (originally from the intake piping), correct? If you're turbocharged, then you can't draw it from the intake piping, since its pressurized. I've seen many people running it to right before the turbo, but then you're dumping all the oil vapors right into your turbo... that would be bad, correct?
I'm running a simple valve cover beather now, and I've been wondering if that is bad because the vapors aren't being drawn out.... is this an issue? If so, how would you correct it?
I'm running a simple valve cover beather now, and I've been wondering if that is bad because the vapors aren't being drawn out.... is this an issue? If so, how would you correct it?
01-06-2003, 11:52 AM
#19
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Re: Doing a PCV / Catch Can Write-up...tell me what you think! (sslude)
would i notice any power differences? would i notice any good/bad changes in fuel stuff? or is there only one reason, to keep your engine cooler by not letting hot oil come back into the engine causing knocking, but i wouldnt have to worry about that (as much) becuase i am a non-forced induction motor.
01-06-2003, 12:03 PM
#20
Re: Doing a PCV / Catch Can Write-up...tell me what you think! (sslude)
is a catch can illlegal in any way? i dont see why it would be illegal, i am just wondering.
01-06-2003, 12:15 PM
#21
Re: Doing a PCV / Catch Can Write-up...tell me what you think! (servion)
The valve cover vent you speak actually see's positive pressure from the intake arm. There is a slash cut tube on the inside of the stock intake arm facing the incoming air, creating positive pressure as the incoming air flows over it. FI motors put it before the turbo with the slash cut facing the flow, so no oil vapor goes through the turbo.
The downside to the breather off the valve cover is once its soaked with oil, it becomes very ineffective.
Its only illegal if you vent it to the atmosphere.
Less oil vapor in the charge benefits both NA and FI.
The downside to the breather off the valve cover is once its soaked with oil, it becomes very ineffective.
Its only illegal if you vent it to the atmosphere.
Less oil vapor in the charge benefits both NA and FI.
01-16-2003, 09:32 PM
#22
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Re: Doing a PCV / Catch Can Write-up...tell me what you think! (Sleeper)
Alright... putting the legal aspects aside...
Would one be safe to simply put on a valce cover breather, and then plugs the PCV tube going to the IM, and put a breather on the other end of that tube (the one from the PCV separation tank on the back of the block)?
Would removing the tube (the PCV separation tank tube tom the IM) from the IM eliminate a needed vacuum (that may... possibly be there to remove the vapors from the tank)? Did that make sense?
Would one be safe to simply put on a valce cover breather, and then plugs the PCV tube going to the IM, and put a breather on the other end of that tube (the one from the PCV separation tank on the back of the block)?
Would removing the tube (the PCV separation tank tube tom the IM) from the IM eliminate a needed vacuum (that may... possibly be there to remove the vapors from the tank)? Did that make sense?
01-17-2003, 08:15 PM
#24
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Re: Doing a PCV / Catch Can Write-up...tell me what you think! (servion)
Heres mine: http://www.geocities.com/wyvnz/catchcan.html
Let me know if anythings wrong.
Let me know if anythings wrong.
01-17-2003, 10:50 PM
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Re: Doing a PCV / Catch Can Write-up...tell me what you think! (mojoGSR92)
Nice Artical..
i was just wondering..since i dont have the traditional VTEC motor (anymore)..could i just take out my oil dip stick to release pressure from the bottom end of my CR-Vtec???
Could i just slap one of those K&N Crank-Case Filters on the pipe so no dirt will enter my engine..??? 
i was just wondering..since i dont have the traditional VTEC motor (anymore)..could i just take out my oil dip stick to release pressure from the bottom end of my CR-Vtec???
Could i just slap one of those K&N Crank-Case Filters on the pipe so no dirt will enter my engine..???