DIY- PCV Catch Can
10-26-2004, 08:42 PM
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DIY- PCV Catch Can
Anyone ever though of making a catch can? Dont feel like shelling out 50bucks for a TRD knockoff on ebay? Well here's a solution!
http://www.angelfire.com/sc/cosmo/MR2_PCV2.html
http://www.angelfire.com/sc/cosmo/MR2_PCV2.html
10-27-2004, 05:08 AM
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very nice!
Man I wish I would have thought of doing something like this to my old Saab 900, it would go about a month then you had to clean the intake and tbody, or it would idle very high or very low! Nice work! Matt
10-27-2004, 08:31 AM
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The DSM crowd has been doing this for years. In my last DSM, I used a Pepsi bottle. Others have spent the time to make nice ones like the one you show.
Very easy DIY project.
Now a question. Are the 4Runners known to need a Catch-can? Should I consider putting one in?
Very easy DIY project.
Now a question. Are the 4Runners known to need a Catch-can? Should I consider putting one in?
10-27-2004, 08:49 AM
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Yeah the All-trac club has been doing the catch can mods for a long time. I bought a power steering reservoir from a DSM, which has a little filter in it, and am going to install it upside down and to make it my catch can. (haven't installed it yet) Only $10 off of ebay!
Here is a pic of the "can"
The bottom hose carries the "oil soaked air" into the can, then the clean air goes back to the intake.
Here is a pic of the "can"
The bottom hose carries the "oil soaked air" into the can, then the clean air goes back to the intake.
10-27-2004, 09:10 AM
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Originally Posted by SLC Punk
Yeah the All-trac club has been doing the catch can mods for a long time. I bought a power steering reservoir from a DSM, which has a little filter in it, and am going to install it upside down and to make it my catch can. (haven't installed it yet) Only $10 off of ebay!
Here is a pic of the "can"
The bottom hose carries the "oil soaked air" into the can, then the clean air goes back to the intake.
Here is a pic of the "can"
The bottom hose carries the "oil soaked air" into the can, then the clean air goes back to the intake.
Awesome i might go pick one up.
10-27-2004, 09:23 AM
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Originally Posted by Ilovemountains
Man I wish I would have thought of doing something like this to my old Saab 900, it would go about a month then you had to clean the intake and tbody, or it would idle very high or very low! Nice work! Matt
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10-27-2004, 01:11 PM
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Originally Posted by 2001Millrunner
forgive me but what is the purpose for this?
There are several plusses to this mod, including a cleaner intake.
Back in the old days, before you were born, the PCV dumped out to the atmposphere, usually to a hose that dropped down out of the engine compartment. If you look at photos of major highways/freeways from the 60's and 70's, you will see that all the lanes have a black stripe running down the middle of them. Much of that was from PCV oil vapor being deposited on the roads as cars drove over them. Now days you don't seen that black stripe as much, certainly it is not as dramatic as it used to be.
10-27-2004, 01:39 PM
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Originally Posted by WATRD
Your Positive Crankcase Valve or PCV vents excess crankcase pressure and oil vapor into your intake. This mod removes the intake component and instead catches the oil vapor in a can that can be cleaned out.
There are several plusses to this mod, including a cleaner intake.
Back in the old days, before you were born, the PCV dumped out to the atmposphere, usually to a hose that dropped down out of the engine compartment. If you look at photos of major highways/freeways from the 60's and 70's, you will see that all the lanes have a black stripe running down the middle of them. Much of that was from PCV oil vapor being deposited on the roads as cars drove over them. Now days you don't seen that black stripe as much, certainly it is not as dramatic as it used to be.
There are several plusses to this mod, including a cleaner intake.
Back in the old days, before you were born, the PCV dumped out to the atmposphere, usually to a hose that dropped down out of the engine compartment. If you look at photos of major highways/freeways from the 60's and 70's, you will see that all the lanes have a black stripe running down the middle of them. Much of that was from PCV oil vapor being deposited on the roads as cars drove over them. Now days you don't seen that black stripe as much, certainly it is not as dramatic as it used to be.
thank you for your detailed explanation w/examples Dr. Rob =)
10-27-2004, 01:52 PM
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Originally Posted by 2001Millrunner
thank you for your detailed explanation w/examples Dr. Rob =)
You can see the stripe I am talking about in this old photo;
It scares me that I can easily remember those days.
These guys are doing a good thing by catching the vapor, not just removing the intake portion and venting it to the outside world.
10-27-2004, 03:06 PM
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Yes it is Peter. I had a thread going a while back where I vented into the engine compartment. Not only did I not notice a gain in power, but it stunk every now and then at idle (like raw exhaust). No thanks, it went back to stock.
This is a cool idea. I might do it.
This is a cool idea. I might do it.
10-27-2004, 04:53 PM
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Originally Posted by kevin444
What fwy is that. The 105 interchange with the 605?
or the 5fwy with the 210?
or the 5fwy with the 210?
Quite the interchange
10-27-2004, 05:06 PM
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Originally Posted by Tacoma Dude
So this is more of an ecological mod as opposed to a performance mod?
I'm a bit confused...
I'm a bit confused...
When they first started "recirculating" the oil vapor, there were some engines that counted on a certain amount of it to keep the engine lubricated, but that did such lousy things to emissions that I don't think any engine requires that the PCV be vented into the intake anymore. It's just a convenient way to relieve pressure in a relatively maintanance free way. Plus, there is not a lot of oil coming out of the PCV in modern engines.
I had thought of removing the intake part of the equation, but hadn't thought of the catch can, so I am glad to see this thread pop up
It will be fun to see how much oil actually accumulates in there.
10-27-2004, 06:17 PM
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Why don't we just get a barbed 3-way brass hose fitting "turned down" and rig it up that way?
In fact, I am going to do that. Not sure what my catch can will be, but I will figure that out while browsing through HD.
I will post pics of course.
In fact, I am going to do that. Not sure what my catch can will be, but I will figure that out while browsing through HD.
I will post pics of course.
10-27-2004, 06:48 PM
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Might I suggest a Nalgene Canister for a catch can? Mucho bling. http://www.rei.com/online/store/Prod...cat=REI_SEARCH
10-27-2004, 07:10 PM
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Originally Posted by gapguy
Might I suggest a Nalgene Canister for a catch can? Mucho bling. http://www.rei.com/online/store/Prod...cat=REI_SEARCH
Thats a pretty good idea too. I was thinking of swirling some vacuum hose so that the vapors have a long way before it exits the can.
10-27-2004, 07:10 PM
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Originally Posted by <96 Runner>
Why don't we just get a barbed 3-way brass hose fitting "turned down" and rig it up that way?
In fact, I am going to do that. Not sure what my catch can will be, but I will figure that out while browsing through HD.
I will post pics of course.
In fact, I am going to do that. Not sure what my catch can will be, but I will figure that out while browsing through HD.
I will post pics of course.
HD ROCKS!
