Well, most cars, the PCV is INSIDE the valve cover, or part of it via a grommet, I have no idea how you'd get in front of it. Keeping the PCV clean would be nice, yes, but at least the can keeps the goo out of the throttle body and intake..
Is it safe to install an oil catch can?
- Thread starter kilou
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My PCV valve is external, so that would be why I asked.
If you could put it before the PCV then sure, go that route!
Mine has been installed for a year AND I LOVE IT!!!
Smoother running, cleaner plugs for longer.
Here is my experience with it:
http://www.automotiveforums.com/vbulletin/showthread.php?t=469918&highlight=pcv+catch+can
Smoother running, cleaner plugs for longer.
Here is my experience with it:
http://www.automotiveforums.com/vbulletin/showthread.php?t=469918&highlight=pcv+catch+can
LT!
Careful of the "stone" inside your can. It will turn almost gummy-like, and restrictive. The fumes attack it, and it will clog, become very restrictive, with no change in appearance.
The catch-can is a cool addition, but you don't want to restrict flow out of the crankcase. I thought the stone a good idea too, but it becomes very spongy. It isn't a stone at all, but rather some kind of fibre that turns from hard to soft from the petroleum attack..
Remember, these things are meant to carry only compressed air, not hot blow by-infested fumes from the PCV.. The can is ok, but not the "stone"
Careful!
Careful of the "stone" inside your can. It will turn almost gummy-like, and restrictive. The fumes attack it, and it will clog, become very restrictive, with no change in appearance.
The catch-can is a cool addition, but you don't want to restrict flow out of the crankcase. I thought the stone a good idea too, but it becomes very spongy. It isn't a stone at all, but rather some kind of fibre that turns from hard to soft from the petroleum attack..
Remember, these things are meant to carry only compressed air, not hot blow by-infested fumes from the PCV.. The can is ok, but not the "stone"
Careful!
This is a pic from a Hyundai, number2 intake runner, 12K miles:
These cans are worth it..
These cans are worth it..
The guy says that's all from the PCV, no catch can, by the way..
I have recently installed the compressor separator catch can on my car. I put it into the coolest spot under the hood, close to the gap between radiator and the front grille, to help condensation.
I noticed something interesting. It appears to collect the goo only up to the certain volume, regardless of the length or the type of driving. I now tend to drain the goo after every trip to work and back (40km each way). If I do not do that, the liquid level stays the same, even after three days of driving.
I think that the compressor separator is just too small for the task. I wish I can find something bigger. I'll make my own thing from the large tea can, although I'd prefer to have something transparent.
I noticed something interesting. It appears to collect the goo only up to the certain volume, regardless of the length or the type of driving. I now tend to drain the goo after every trip to work and back (40km each way). If I do not do that, the liquid level stays the same, even after three days of driving.
I think that the compressor separator is just too small for the task. I wish I can find something bigger. I'll make my own thing from the large tea can, although I'd prefer to have something transparent.
Husky does make a separator that is like 5 times as big, also available at Home Depot.
That's weird; mine fills to the top and then starts sucking the oil back in!
That's weird; mine fills to the top and then starts sucking the oil back in!
JHZR2
Staff member
yugrus, the issue is space velocity in your condensor. It appears that not much is going on in the tubing to/from it, but there is lots of condensation going on in the condensor. Thus, the less time the gas spends in there, the less heat can be removed to ambient, and the less condensation occurs as the vessel gets more and more full.
JMH
JMH
Thanks JMH, that's what I thought was going on. So the bigger the can, the better!
It is interesting how results vary from motor to motor.
I now feel that this thing is really important for the engine health. Great comments so far, let's keep it rolling.
I saw it, but I thought it was something different. It didn't have clear bowl.
Can you guys give me a size estimate on the actual catch can. I am trying to locate a place to mount it and a bypass filter in my car. So if you can tell me how it compares to like a TP core or something generic, that would be really helpful. I can’t access the Home Depot or Wallyworld website for the next little while.
Bypass filter Going to be running a MG-30 on the oil and want to know how much room I will need for the separator. If I can bolt it(catch can) up on the Intake manifold, then I would be a happy panda.
Hi,
finally got my catch can
I unscrew the bowl each time. I figure that the valve would easily be clogged with some of the oil ________ that gets caught in there and might stick partway open and leak.
For those in northern US or Canada: did you have problems with oil catch cans (especially those built with air tool filters) when it's freezing? In winter there seem to be a lot of water condensation in blowby gasses that is trapped in the catch can. If you leave the car outside for a while, this water may freeze...and expand.....and crack the bowl, no? I don't want to start the engine and suck plastic shrapnels followed by a massive vacuum leak
I have just poured some water in my air tool filter and it is sitting in the fridge right now. I'll check tomorrow to see if there is any crack in the bowl.
Is this paranoia??
Is this paranoia??
Quote:
For those in northern US or Canada: did you have problems with oil catch cans (especially those built with air tool filters) when it's freezing? In winter there seem to be a lot of water condensation in blowby gasses that is trapped in the catch can. If you leave the car outside for a while, this water may freeze...and expand.....and crack the bowl, no? I don't want to start the engine and suck plastic shrapnels followed by a massive vacuum leakI have just poured some water in my air tool filter and it is sitting in the fridge right now. I'll check tomorrow to see if there is any crack in the bowl.
Is this paranoia??
I am in Norther Ontario Canada and I had no freezing whatsoever. There is enough fuel and other components to keep it liquid at even -40f. It got thick, but never solid.
________ at -40f, the oil was thicker than what was in the catchcan.
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