Best catch can?
07-15-2011, 02:53 PM
#1
Best catch can? Just wondering if a catch can is a good idea and who makes the best inexpensive one cause im not looking to spend a whole lot, but in doing my intake and I think while it's off a might be a good idea to install one.
1998 camaro z/28
1998 camaro z/28
07-16-2011, 09:25 AM
#3
^^^ does that even work? i dont see any sort of resivior on it. i've heard good things about the norris catch cans. i just installed one on my car but it's to early to tell if it works well.
07-16-2011, 11:28 AM
#4
Spend the money on an Elite catch can & don't look back ($159). The homemade units don't work very well. There is a thread somewhere on here that goes into this topic in great detail. There definately needs to be a mesch filter & enough area for propper circulation to seperate the oil from the air. Find the tread, it will be worth your time.
07-16-2011, 12:14 PM
#5
Spend the money on an Elite catch can & don't look back ($159). The homemade units don't work very well. There is a thread somewhere on here that goes into this topic in great detail. There definately needs to be a mesch filter & enough area for propper circulation to seperate the oil from the air. Find the tread, it will be worth your time.
07-16-2011, 12:15 PM
#6
It works perfectly. Any oil drains back down the lower hose (the advantage of mounting it higher up). The outlet is completely dry. I've used the reservoir type before, just a PITA, and fill up with water condensation + sludge. Also, you need a filter, which is easy to change in mine, an empty can won't do *****.
07-16-2011, 02:16 PM
#7
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07-16-2011, 03:58 PM
#9
The purpose of the mesh found in the Elite Engineering oil catch cans (and perhaps some others) is not to filter the condensate. It is rather is to slow down the oil vapor stream and force the oil and other ingredients to re-condense into liquid. A good portion of this condensate can be water (depending on the ambient humidity) or unburned fuel (caused by fuel dilution).
07-16-2011, 04:21 PM
#10
The purpose of the mesh found in the Elite Engineering oil catch cans (and perhaps some others) is not to filter the condensate. It is rather is to slow down the oil vapor stream and force the oil and other ingredients to re-condense into liquid. A good portion of this condensate can be water (depending on the ambient humidity) or unburned fuel (caused by fuel dilution).
07-16-2011, 05:20 PM
#11
Condensing oil out of oil vapor in a car engine is different than condensing water out of compressed air.
The amount of water contained in compressed air is indirectly proportionate to the pressure. Stated differently, compressed air can hold the most water when pressure is the highest. Because of this, removing water from compressed air is simply a matter of dropping the pressure and trapping the water.
Mechanically, this is usually done by installing water traps at points on the air system where pressure drops tend to occur anyway – for example just as the air exits a compressed air tank and enters a transfer line. Simply put, removing water from compressed air requires only a pressure drop.
The oil vapor from a car engine is at relatively low pressure so getting it to condense with a simple reduction in pressure is not practical. What is practical is a reduction in temperature. The simplest mechanical means of reducing the temperature of the oil vapor in a small space is through interference and exposure to more surface area such as a mesh. Conceptually it is similar to those spiral shaped condensing tubes one sees on the old fashion still.
The amount of water contained in compressed air is indirectly proportionate to the pressure. Stated differently, compressed air can hold the most water when pressure is the highest. Because of this, removing water from compressed air is simply a matter of dropping the pressure and trapping the water.
Mechanically, this is usually done by installing water traps at points on the air system where pressure drops tend to occur anyway – for example just as the air exits a compressed air tank and enters a transfer line. Simply put, removing water from compressed air requires only a pressure drop.
The oil vapor from a car engine is at relatively low pressure so getting it to condense with a simple reduction in pressure is not practical. What is practical is a reduction in temperature. The simplest mechanical means of reducing the temperature of the oil vapor in a small space is through interference and exposure to more surface area such as a mesh. Conceptually it is similar to those spiral shaped condensing tubes one sees on the old fashion still.
07-16-2011, 06:32 PM
#12
Condensing oil out of oil vapor in a car engine is different than condensing water out of compressed air.
The amount of water contained in compressed air is indirectly proportionate to the pressure. Stated differently, compressed air can hold the most water when pressure is the highest. Because of this, removing water from compressed air is simply a matter of dropping the pressure and trapping the water.
Mechanically, this is usually done by installing water traps at points on the air system where pressure drops tend to occur anyway – for example just as the air exits a compressed air tank and enters a transfer line. Simply put, removing water from compressed air requires only a pressure drop.
The oil vapor from a car engine is at relatively low pressure so getting it to condense with a simple reduction in pressure is not practical. What is practical is a reduction in temperature. The simplest mechanical means of reducing the temperature of the oil vapor in a small space is through interference and exposure to more surface area such as a mesh. Conceptually it is similar to those spiral shaped condensing tubes one sees on the old fashion still.
The amount of water contained in compressed air is indirectly proportionate to the pressure. Stated differently, compressed air can hold the most water when pressure is the highest. Because of this, removing water from compressed air is simply a matter of dropping the pressure and trapping the water.
Mechanically, this is usually done by installing water traps at points on the air system where pressure drops tend to occur anyway – for example just as the air exits a compressed air tank and enters a transfer line. Simply put, removing water from compressed air requires only a pressure drop.
The oil vapor from a car engine is at relatively low pressure so getting it to condense with a simple reduction in pressure is not practical. What is practical is a reduction in temperature. The simplest mechanical means of reducing the temperature of the oil vapor in a small space is through interference and exposure to more surface area such as a mesh. Conceptually it is similar to those spiral shaped condensing tubes one sees on the old fashion still.
OK thanx that makes sense. I always thought the the water vapor and/or oil the i see in the plastic cup (pretty nasty looking) was seperated by what appears to be some type of stone looking material filter if that makes sense. So this type of devise would not work on our cars?
07-16-2011, 07:17 PM
#13
OK thanx that makes sense. I always thought the the water vapor and/or oil the i see in the plastic cup (pretty nasty looking) was seperated by what appears to be some type of stone looking material filter if that makes sense. So this type of devise would not work on our cars?
One is for water only and is a simple trap which often includes a clear "bowl" in which you will see water. I have seen these used as home made oil catch cans but they do not work well because most of the oil vapor goes straight through them.
A second device is a coalescing filter which contains some sort of media (wire mesh being one example and perhaps your brown stone being another) to trap oil. These are used, for example, for compressed air used for spray painting where you want no oil in the air as well as no water. You could presumably adapt one of these devices to make an oil catch can.
The third device is a combination device which uses two internal chambers to accomplish both water and oil removal.
07-16-2011, 07:33 PM
#14
On compressed air systems you usually see three possible devices.
One is for water only and is a simple trap which often includes a clear "bowl" in which you will see water. I have seen these used as home made oil catch cans but they do not work well because most of the oil vapor goes straight through them.
A second device is a coalescing filter which contains some sort of media (wire mesh being one example and perhaps your brown stone being another) to trap oil. These are used, for example, for compressed air used for spray painting where you want no oil in the air as well as no water. You could presumably adapt one of these devices to make an oil catch can.
The third device is a combination device which uses two internal chambers to accomplish both water and oil removal.
One is for water only and is a simple trap which often includes a clear "bowl" in which you will see water. I have seen these used as home made oil catch cans but they do not work well because most of the oil vapor goes straight through them.
A second device is a coalescing filter which contains some sort of media (wire mesh being one example and perhaps your brown stone being another) to trap oil. These are used, for example, for compressed air used for spray painting where you want no oil in the air as well as no water. You could presumably adapt one of these devices to make an oil catch can.
The third device is a combination device which uses two internal chambers to accomplish both water and oil removal.
OK Thanx for your quick reply. I will get with our main. dept. monday and see if they can hook me up.
07-26-2011, 03:36 PM
#17
I'm going to be picking up a Norris unit myself. Constantly seeing a puddle of oil in the throttle body is starting to annoy me.
