Best catch can?
1998 camaro z/28
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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?
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.
Thanx but I got a little one with clear plastic bowl from work for free and just tied it in with some fuel line. I'm cheap and just can't see spending that kind of money on something I may or may not need. lol
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.







