this thread needs an adult rating..
that first picture is outrageous, and beautiful...
that first picture is outrageous, and beautiful...
Project Carbon Control!
- Thread starter turbocruiser
- Start date
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I too am enjoying my catch cans. I have the mag light catcher on my pvc side (see my catch can build) and the air compressor catcher on the turbo side. My throttle body looks clean and there is absolutely no oil in the pipe going from the intercooler to the throttle body
However...
I am now of the opinion that the turbo side catch (the pvc catch can works) can does may do nothing to prevent oil from getting into the throttle body. it only prevents oil from getting in the intercooler. I suspect this to be true because I am in the process of rebuilding my turbo as it was leaking oil past the bearings and causing some light smoking (not seen-only to be smelled). when I took off the pipe going from the turbo to intercooler there was a good film of oil but there is absolutely no oil in the pipe from the intercooler to throttle body. So the intercooler is an excellent catch can? the turbo side catch can is actually pre turbo (at intake). I know the turbo side catch can works because it collects about a cc of oil per 100 miles
However...
I am now of the opinion that the turbo side catch (the pvc catch can works) can does may do nothing to prevent oil from getting into the throttle body. it only prevents oil from getting in the intercooler. I suspect this to be true because I am in the process of rebuilding my turbo as it was leaking oil past the bearings and causing some light smoking (not seen-only to be smelled). when I took off the pipe going from the turbo to intercooler there was a good film of oil but there is absolutely no oil in the pipe from the intercooler to throttle body. So the intercooler is an excellent catch can? the turbo side catch can is actually pre turbo (at intake). I know the turbo side catch can works because it collects about a cc of oil per 100 miles
alia176
SILVER Star
It sounds like you should be able to plug the nipple at the intake and let the PCV vent to atmosphere. I wonder if there's a particular need to "suck" the vapor vs natural pressure push the PCV vapor out of the crankcase.
Try it, it wont damage anything...stuff just MIGHT not run as well as it should.
alia176
SILVER Star
the FI system dosn't need the PVC air for combustion I wouldn't think. But I do wonder what happens to the vapor in the crankcase...
I've noticed that with the PCV hose disconnected, yet plugged it idles slightly different than with the hose connected to the valve. I'd imagine that you'd have to get rid of the one-way valve (drill out an old PCV valve) and run a hose down past the oil pan (general location that is low enough) so you don't have oil getting all over the place.
alia176
SILVER Star
That's what older engines used to look like when it came to PCV venting!
Depending on your local emission requirements, you may have to put the hoses back in for inspection. So don't throw them away!
Depending on your local emission requirements, you may have to put the hoses back in for inspection. So don't throw them away!
I think you're gonna want to drill out the PCV valve, I don't think the crankcase makes enough pressure to let out the bad stuff, that's what the vacuum you plugged is for.
alia176
SILVER Star
Very good point
As already stated by others, the majority of the oil in the pcv gases is in the form of a vapor. A properly designed "catch" can does more than just catch any oil that is in liquid form, it acts as a device to cool and condense the vapor into liquid, and also then catches it. That's the reason for the baffles and stainless strand in some good catch cans. They maximize the time and surface area contact with the vapor to cool & condense it and catch a higher percentage of the oil. Your intercooler is a pretty effective condenser of oil vapor since it's sole purpose is to cool the air charge. The oil condenses & collects in there. That's why you don't see oil downstream of the intercooler. It's too cool in there to let much oil vapor through and be carried with the air up to the T/B. Intercoolers are also typically at about the lowest point in the charge air piping system. Any oil on the inside of the piping will drain down to the low points when the vehicle is parked (gravity). Periodically checking for oil in an intercooler (or other low points in the piping) will tell you if the turbo oil seals have started to go very quickly.
- Thread starter
- #111
Despite all those facts there, my intake tubes were totally coated in oil both into and out of the intercooler so while this holds true in theory, with actual experience on a FI 1FZFE with perfectly properly functioning turbo (ie turbo seals are still fine), I got oil all the way up to the throttle body until I ultimately installed the turbo side's catch can and as the first few shots show the catch can I decided to do had both the stainless mesh, a stainless screen and a super sweet machined catch can with undercut walls to prevent creep. Ohh and yes, the intercooler is indeed another "catch can" until and unless you install an extremely efficient catch can. HTH
Its ok they both go to the same place, what cannot get out the PCV valve will just go out the other unobstructed outlet.
Good call, but I would assume that it was more likely to flow in the direction it was designed.
- Thread starter
- #114
Just a word of warning, after awhile those filters are gonna get saturated with oil and then start the misting process putting oily mist all around their surroundings. Not a knock any at all, in fact that's sorta similar to the way that the old musclecars used to be setup but eventually they will saturate and spill out. You can change them at that time then, and again, not a knock any at all cause technically that's the same in scope of effectiveness but ...
Well, since I have stomped on people's toes all week and nobody else will say anything.... I think it looks goofy. There, I said it.
-B-
-B-
Alky, you are on top of your game!! Good to see you really edumacating yourself.
I'm tryin, can't work on anyone else's junk untill you know the ends and outs of your own (want to be a mechanic/custom fabricator when I get older).
NaterGator
On Gilligan's Island
I didn't have the monies for this catch can setup, but I might try a product from steeda that looks like a coalescing filter but apparently flows freely...
http://www.steeda.com/products/steeda_oil_separator.php
http://www.steeda.com/products/steeda_oil_separator.php
- Thread starter
- #119
Looks like it will work, you will be amazed at how much oil he PCV circuit will collect! Good Work!
Check out this thread in Chat. I read about this contraption called "The Condensator" and it sounds very similar to what you guys have done. Interesting results.
https://forum.ih8mud.com/showthread.php?t=151577
https://forum.ih8mud.com/showthread.php?t=151577
