Homemade CCV questions
Senior User
Joined: Aug 2009
Posts: 459
Likes: 0
From: Show Low, AZ
I did the CCV mod and every once in awhile can get a smell of it. In fact I think the gal at the Sonic drive thru got a whiff of the fumes yesterday
. You folks running a trap do you notice that the smell has diminished or is it about the same. Been thinking of using Ponyboy's design.
. You folks running a trap do you notice that the smell has diminished or is it about the same. Been thinking of using Ponyboy's design.
Postmaster
Joined: Jun 2006
Posts: 2,647
Likes: 0
From: Fulltime RVer
...My advice is to "hold your breath" or "stay upwind" and leave your CCV routed to the atmosphere with the shortest length of 3/4" diameter hose that gives a convenient run and exit point so the oil fumes don't coat the underside of the truck. In order to avoid "excessive" crankcase pressure or vacuum a CCV that's returned to the intake must have a well designed "regulator" meaning one that's matched to the "filter element" which traps most of the oil vapor so that it doesn't foul the intake system.
The two pictures below illustrate the considerations involved in such a design and even with their competent engineering staff Racor didn't get it done correctly in their initial effort because I had an early version of their 7.3L CCV kit and the regulator warning "pop up" button would stick and not alert the driver that the CCV filter was clogged and needed to me changed! There were several reports of dip sticks being blown out with those early versions...
The two pictures below illustrate the considerations involved in such a design and even with their competent engineering staff Racor didn't get it done correctly in their initial effort because I had an early version of their 7.3L CCV kit and the regulator warning "pop up" button would stick and not alert the driver that the CCV filter was clogged and needed to me changed! There were several reports of dip sticks being blown out with those early versions...
cat's version here at the shop is a pretty nice setup. I have been thinking about calling the local dealer to see what one would cost.
IIRC, it has a replaceable filter element, an inlet, and outlet and an oil drain tube that could be vented or stuck back into the pan, etc.
IIRC, it has a replaceable filter element, an inlet, and outlet and an oil drain tube that could be vented or stuck back into the pan, etc.
Cat says to change the CCV element in their unit every oil change to avoid excessive crankcase pressure but reports on motorhome threads indicate some units clog up well before then and over pressurize their C7 crankcase! I wouldn't even consider installing one of those Cat CCV units on my engine!
I'd like to see the "measured" curve for "pressure drop" versus "CCV flow rate" on a Cat CCV filter like the one in the first graph above on the Racor CCV filter but I don't think Cat has even made this basic measurement!
Post Fiend
Joined: Feb 2007
Posts: 14,541
Likes: 2
From: Dallas-Ft. Worth
I did the CCV mod and every once in awhile can get a smell of it. In fact I think the gal at the Sonic drive thru got a whiff of the fumes yesterday. You folks running a trap do you notice that the smell has diminished or is it about the same. Been thinking of using Ponyboy's design.
. You folks running a trap do you notice that the smell has diminished or is it about the same. Been thinking of using Ponyboy's design.
Posting Guru
Joined: Sep 2007
Posts: 2,121
Likes: 0
From: Knoxville, TN
I am running mine back into the intake after my canister because I couldn't stand the smoke. It still lets a little oil back in, but I will just deal with it.
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Lead Driver
Joined: Jun 2003
Posts: 8,298
Likes: 25
From: Damon (South East Texas)
I have the PVC pipe version of the CCV trap like Chris, but with a rounded cap on each end and a drain petcock on the bottom. I have plastic "pot scrubbies" inside for a filtering media and rerouted back to air intake. It does trap some oil, but it still allows some to pass through. The trap catches approximately 2 tablespoonsful every 2-3k miles. I have been pondering a way to make it more efficient, but haven't revised it yet.
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Post Fiend
Joined: Jun 2004
Posts: 9,293
Likes: 10
From: Parker, CO
I got rid of the stock CCV inlet that goes into the intake, but a friend of mine here in Denver has one sitting at home, so he's going to give it to me so I can use that to re-route back to the intake.
Any kind of trap should probably be run back into the intake to prevent any crankcase pressure. That and not to use a trap setup or filter elements that would cause any kind of restriction.
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Lead Driver
Joined: Jan 2007
Posts: 6,708
Likes: 5
From: Kiowa CO
Here is the link to the thread that Chris started when he did his CCV vent
https://www.ford-trucks.com/forums/8...with-pics.html
Complete with pictures
https://www.ford-trucks.com/forums/8...with-pics.html
Complete with pictures
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Post Fiend
Joined: Jun 2004
Posts: 9,293
Likes: 10
From: Parker, CO
Yup that's it. I have two traps in my garage now. One is for Andrew and another is sitting - someone wanted one built for them but back out yesterday. Not that hard to do with all parts available at Home Depot. I get about a teaspoon or two every thousand miles or so. I need to change the pot scrubbers at next oil change this month. All I can say is no pressure issues and my CAC boots and intake is very clean.
There's another member on PSN that lives here in Colorado, and his CCV trap is way different than any homemade setup I've ever seen. His is a canister that uses clips to hold the housing. 3 snaps and the entire canister comes off. Inside is a huge round foam filter, with a catch space at the bottom for any oil that drips down.
So far I have yet to find a canister similar to his setup. It looked nice, and I was going to try and copy the design if I can find something like that.
Laughing Gas
Joined: Aug 2009
Posts: 1,192
Likes: 7
From: Belgrade, MT
Just a thought
I think ponyboys design is perfect, and this is on my todo list. As far as filtration goes, was wondering about steel wool as an option. many different coarseness levels to try/play with as a more robust filtration media. i don't have the mod yet, so I am just thinking of "off the shelf" options, but seems like one with some variables to use at least.
my other off the wall thought was a way to heat the canister possibly, change the condinsation factor some, in fact, as i type this, maybe cool would be better, make the oil vapors thicker?
Its my friday night, and for once, I have nothing but thought time, hope yall don't mind the pondering.
Tom
my other off the wall thought was a way to heat the canister possibly, change the condinsation factor some, in fact, as i type this, maybe cool would be better, make the oil vapors thicker?
Its my friday night, and for once, I have nothing but thought time, hope yall don't mind the pondering.
Tom
Lead Driver
Joined: Jan 2007
Posts: 6,708
Likes: 5
From: Kiowa CO
Good to know, Chris. That's what I'm shooting for.
There's another member on PSN that lives here in Colorado, and his CCV trap is way different than any homemade setup I've ever seen. His is a canister that uses clips to hold the housing. 3 snaps and the entire canister comes off. Inside is a huge round foam filter, with a catch space at the bottom for any oil that drips down.
So far I have yet to find a canister similar to his setup. It looked nice, and I was going to try and copy the design if I can find something like that.
There's another member on PSN that lives here in Colorado, and his CCV trap is way different than any homemade setup I've ever seen. His is a canister that uses clips to hold the housing. 3 snaps and the entire canister comes off. Inside is a huge round foam filter, with a catch space at the bottom for any oil that drips down.
So far I have yet to find a canister similar to his setup. It looked nice, and I was going to try and copy the design if I can find something like that.
Lead Driver
Joined: Jan 2007
Posts: 6,708
Likes: 5
From: Kiowa CO
I think ponyboys design is perfect, and this is on my todo list. As far as filtration goes, was wondering about steel wool as an option. many different coarseness levels to try/play with as a more robust filtration media. i don't have the mod yet, so I am just thinking of "off the shelf" options, but seems like one with some variables to use at least.
my other off the wall thought was a way to heat the canister possibly, change the condinsation factor some, in fact, as i type this, maybe cool would be better, make the oil vapors thicker?
Its my friday night, and for once, I have nothing but thought time, hope yall don't mind the pondering.
Tom
my other off the wall thought was a way to heat the canister possibly, change the condinsation factor some, in fact, as i type this, maybe cool would be better, make the oil vapors thicker?
Its my friday night, and for once, I have nothing but thought time, hope yall don't mind the pondering.
Tom
Laughing Gas
Joined: Feb 2007
Posts: 775
Likes: 0
From: Williamston, MI
Any experience with a filer/trap freezing? During hunting season I get out almost every day. I hunt 5 minutes from my house. So, my concern is that with the truck running for such short periods it may allow condensation to build and block the filter. I know this is not good for the truck overall but just want to make sure I'm not compounding the problem. So, at least that's my excuse for having the parts in the garage to do this for almost 2 years.
Gene had a few posts on a system to measure CC pressure. Anyone able to locate that thread?
Gene had a few posts on a system to measure CC pressure. Anyone able to locate that thread?