I was wondering if anyone on here has put on a Catch Can between the PCV and engine so you are not sucking any oil into the engine. I have read that high mileage engines like my 1983 El Camino with 360,000 miles might benefit from this, my 2004 Mercury Marauder has 25,000 miles on it and since it is fuel injected this might keep the runners in the intake cleaner, any pros or cons too doing this. I am just wondering if this is better for vehicles that have superchargers and turbos. Any thoughts would be appreciated. The other idea I had for the El Camino was to lengthen the hose that goes from the PCV to the carburetor since with a longer hose any oil droplets would have a harder time traveling into the carburetor. I have not done anything yet, just want to get some opinions. I am sure someone is going to say well if you have gotten to 360,000 miles without 1 why do you need a Catch Can.
Oil Seperator (Catch Can)
- Thread starter c3po
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I put an air/oil separator in the pvc line of my car. It doesn't have much blow-by so the small capacity isn't an issue. I drain it probably once a month. It builds up about a tablespoon of really foul smelling liquid. I can't think of a downside to one, if properly installed. The told us in the Navy to always have less that four turns in a vacuum line so you might want to think about that in terms of routing.
I have a small catch can on my SRT-4. It's one of the first mods. that are recommended for these cars. I can't really say a whole lot about it other than it does it's job. I drain maybe a couple of teaspoons out of it at each oil change (5K miles.) After removing the PCV valve for cleaning, I did find the valve cover has sufficient baffling so I wouldn't expect to get much oil sucked out other than vapor.
As far as purchasing one, I would just check some of the small car tuner web stores.
As far as purchasing one, I would just check some of the small car tuner web stores.
I have a catch can on my PCV system. It keeps my intake manifold, throttle body, and valves clean, plus any deposits that would end up in the combustion chamber.
But I have fuel injection.
A carbureted vehicle has gasoline to wash crud away in the intake manifold, and it is not as necessary to use a catch can.
But I have fuel injection.
A carbureted vehicle has gasoline to wash crud away in the intake manifold, and it is not as necessary to use a catch can.
If you can fit it in, it can't hurt anything. I had one on my old Hyundai, and the thing caught a lot of junk between oil changes. Usually was pretty full by the change interval.
I found out the guy that sells them on the Marauder website has a company called JLT, they make the JLT Cold Air Intake Kit, but it is not a Catch Can that he sells but a PCV Pre Filter, it goes in where the PCV goes and then the PCV attaches to it, this thing has some sort of a screen that lets the vapors through but not the oil droplets, supposedly a lot of Mustang Cobra guys are using this setup.
On the N/A cars I haven't seen it used too much, unless you have a huge cam or something..
I had a modified Tbird supercoupe, and a supercharged 96 thunderbird lx with the 4.6L.
The supercoupe benefited a lot from the catch can, I would drain it regularly.
It beats sucking oil into the intake manifold.
I had a modified Tbird supercoupe, and a supercharged 96 thunderbird lx with the 4.6L.
The supercoupe benefited a lot from the catch can, I would drain it regularly.
It beats sucking oil into the intake manifold.
I run one on my SRT-4 with a check valve in line. Cleaning oil out of the intercooler gets old quick.
The 24v Cummins in my 01.5 Ram has, or I should say had, a "puke" bottle from the factory, which has since been modified.
The 24v Cummins in my 01.5 Ram has, or I should say had, a "puke" bottle from the factory, which has since been modified.
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Johnd, does your car seem to run better with the air/oil seperator and where did you get yours from, also is the liquid you are pouring out very dark.
Performance wise, can't tell any difference. Have heard stories of less detonation and if there was an intercooler involved I wouldn't consider running without one. And, yes, the liquid is thin, back and foul smelling.
Johnd, does your car seem to run better with the air/oil seperator and where did you get yours from, also is the liquid you are pouring out very dark.
Performance wise, can't tell any difference. Have heard stories of less detonation and if there was an intercooler involved I wouldn't consider running without one. And, yes, the liquid is thin, back and foul smelling.
Originally Posted By: onion
This is a great idea. I think I'll put one on the wife's Lumina.
Any suggestion on where to get one with 3/8" inlet/outlet?
Here is a pic of the "$20 catch can" set up on my SRT-4. It's a 3/8" set up, all you do is pick up 3/8" x 1/4"NPT fittings to go into the seperator. The check valve is hidden behind the upper rad hose.
By oil change time (6k mi.) the container will be 3/4 full.
This is a great idea. I think I'll put one on the wife's Lumina.
Any suggestion on where to get one with 3/8" inlet/outlet?
Here is a pic of the "$20 catch can" set up on my SRT-4. It's a 3/8" set up, all you do is pick up 3/8" x 1/4"NPT fittings to go into the seperator. The check valve is hidden behind the upper rad hose.
By oil change time (6k mi.) the container will be 3/4 full.
Well it sure doesn't LOOK like a charm. That thing is *****!
Heh. But seriously, that's a good idea and I'm glad it's working for you.
Why did you seal off the crankcase vents? That worries me. Sounds like something I'd do to get rid of an oil leak before selling a vehicle.
Heh. But seriously, that's a good idea and I'm glad it's working for you.
Why did you seal off the crankcase vents? That worries me. Sounds like something I'd do to get rid of an oil leak before selling a vehicle.
c3po - Sure - it is a great idea on your new car.
I use an inline water separator [like many others] from Home Depot, Menards, or Ace hardware. just screw in the 3/8 fittings and place in inline [observe the correct direction].
I get a whole lot more in the little tank in cold/cool weather than in nice summertime. Must be more blow-by in winter.
I use an inline water separator [like many others] from Home Depot, Menards, or Ace hardware. just screw in the 3/8 fittings and place in inline [observe the correct direction].
I get a whole lot more in the little tank in cold/cool weather than in nice summertime. Must be more blow-by in winter.
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