PCV oil separating catch can
Thread Starter
Burning Brakes
Joined: May 2006
Posts: 1,136
Likes: 8
From: Chichester, UK
PCV oil separating catch can
Hi All
Just received latest edition of Vette Mag.
On the product preview pages this ad. caught my eye.
Last month I took off intake manifold of my 1980 and it was covered and clogged up with carbon deposits.
I know that engine technology has moved on since first gen. small blocks, however this product sounds very good on paper.
What do you think?
Thank you
Just received latest edition of Vette Mag.
On the product preview pages this ad. caught my eye.
Rev Xtreme PCV oil separating catch can. {A special internal-dispersion design to prevent oil mist from entering intake manifold, reduces carbon build up and intake air contamination}
I know that engine technology has moved on since first gen. small blocks, however this product sounds very good on paper.
What do you think?
Thank you
Drifting
Joined: Feb 2007
Posts: 1,993
Likes: 7
From: LaPine Oregon
Updated online store?
C3Paul; this RevXtreme link I have http://http://www.revxtreme.com/specials.htm does not list a 'new' version or give details as to any new design.
Can you be more specific on their latest OCC?
Can you be more specific on their latest OCC?
Race Director
Joined: Dec 2000
Posts: 19,304
Likes: 85
From: San Diego CA
Types of catch cans
While many catch cans containing some sort of filter (I say this because some of the cheaper ones don't), no catch can will trap all the airborn oil, especially if it is mounted near a heat source, since the blowby gases passing through can exceed 180 degrees F. Essentially, there are 4 types of "filters" out there.
1. Stainless steel mesh (like a brillo pad): Uses surface area to "catch" airborn oil. Aluminum body makes it mandatory to check contents periodically, although some units leave you no way to remove the "can" portion. Having to use a petcock drain can be a pain.
2. Particulate filter with radial dispersion disc (swirls and flings incoming air at the inside wall of the "can", causing the airborn oil to coalesce on the wall and drop to the bottom, The air is then pulled through a filter that traps particulates and some of the remaining oil aerosols.)
3. Transfer tube: Directs the blowby gasses directly at the inside can wall via holes in the tube.
4. Coalescing filter: Most effective at high vacuum pressure, much higher density filter media than the mesh filters used in version # 1. Due to its higher density, this filter's flow capacity must be fairly generous.
In all cases, it is best to keep the inlet port below the feed line so that there is no liquid "trap" in the line. It also helps to keep the filter body cooler than the blowby gas to help the oil to coalesce out of the airstream.
I use a glass-body particulate filter that is mounted in the front of the engine bay where temperatures are quite a bit cooler than near the engine.
1. Stainless steel mesh (like a brillo pad): Uses surface area to "catch" airborn oil. Aluminum body makes it mandatory to check contents periodically, although some units leave you no way to remove the "can" portion. Having to use a petcock drain can be a pain.
2. Particulate filter with radial dispersion disc (swirls and flings incoming air at the inside wall of the "can", causing the airborn oil to coalesce on the wall and drop to the bottom, The air is then pulled through a filter that traps particulates and some of the remaining oil aerosols.)
3. Transfer tube: Directs the blowby gasses directly at the inside can wall via holes in the tube.
4. Coalescing filter: Most effective at high vacuum pressure, much higher density filter media than the mesh filters used in version # 1. Due to its higher density, this filter's flow capacity must be fairly generous.
In all cases, it is best to keep the inlet port below the feed line so that there is no liquid "trap" in the line. It also helps to keep the filter body cooler than the blowby gas to help the oil to coalesce out of the airstream.
I use a glass-body particulate filter that is mounted in the front of the engine bay where temperatures are quite a bit cooler than near the engine.
Last edited by Dave68; Aug 8, 2008 at 09:55 AM.
Le Mans Master
Joined: Dec 2005
Posts: 8,475
Likes: 332
From: Port Arthur, Texas 77642
The RevXtreme unit is one of the most innovative and effective on the market. As Dave68 mentioned any CC is most effective when mounted at the front of your car where temperatures are lower allowing the vapors to collect on the cooler aluminum CC interior. The RevXtreme unit unit is also slightly larger than most and is VERY reasonably priced 
Safety Car
Joined: Apr 2003
Posts: 4,306
Likes: 773
From: Long Island NY
The RevXtreme unit is one of the most innovative and effective on the market. As Dave68 mentioned any CC is most effective when mounted at the front of your car where temperatures are lower allowing the vapors to collect on the cooler aluminum CC interior. The RevXtreme unit unit is also slightly larger than most and is VERY reasonably priced
Curious what makes it so innovative and effective?
Le Mans Master
Joined: Dec 2005
Posts: 8,475
Likes: 332
From: Port Arthur, Texas 77642
Or maybe that was a Kyle Breese
The internals of the can along with it's size are helpful in collecting oil making it simple yet effective IMHO
Last edited by NemesisC5; Dec 23, 2008 at 09:49 PM.
