CCV Mod Bad?
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Joined: Oct 2003
Posts: 17,791
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From: Ashland City, TN
CCV Mod Bad?
I was talking to one of my members, he's over in the NBS forums though. They saying over there that CCV Mod is bad, especially if set up into the exhaust.
I believe that Cuda Jim here is all for the exhaust CCV mod, correct?
It seems correct to me. I know if you do it wrong, it is bad for the motor, your just blowing exhaust into the crank case.
Maybe we should discuss the pro's and cons of the CCV, exhaust ran and not.
I believe that Cuda Jim here is all for the exhaust CCV mod, correct?
It seems correct to me. I know if you do it wrong, it is bad for the motor, your just blowing exhaust into the crank case.
Maybe we should discuss the pro's and cons of the CCV, exhaust ran and not.
Lead Driver
Joined: May 2007
Posts: 8,606
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From: Belair md
they may not know the proper way? perhaps thats just what they were taught? in theory removing the factory vent design and venting to atmosphere is worse on the engine- the stock design draws the vapor and pressure out of the engine, venting to atmosphere actually allows it to build up and have to vent on its own.
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Joined: Sep 2003
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From: North East Ohio
I saw a truck run on a dyno with the ccv tube tied into the exhaust at a 45* angle, what i thought was the right way to do it. Ended up presurizing the oil pan and blew the dipstick out, oily mess all over.
I would not run the ccv to the exhaust for any reason after seeing that.
I have mine dump under the driver's feet and you can see blow-by there at any time you want, so I doubt very much it's a problem and certainly isn't backing up in the motor...
The only reason I did mine was due to a larger turbo, so I didn't have to figure out how to plumb the dang thing in there with the custom made intakes etc. The stock trucks I have/had I didn't see a reason to bother with it.
I would not run the ccv to the exhaust for any reason after seeing that.
I have mine dump under the driver's feet and you can see blow-by there at any time you want, so I doubt very much it's a problem and certainly isn't backing up in the motor...
The only reason I did mine was due to a larger turbo, so I didn't have to figure out how to plumb the dang thing in there with the custom made intakes etc. The stock trucks I have/had I didn't see a reason to bother with it.
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Postmaster
Joined: Sep 2007
Posts: 4,005
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From: Mcafee, NJ
as a NBS guy i can say "we" are not against it its actually recommended
the way it was explained to me is that the ccv adapted to the exhaust causes a build up pf pressure ... not the venturi effect one would think
the reason us nbs guys do it very often as one of the 1st mods is the oil vapor enters the intake continues through the turbo and into the intercooler pipes... the factory intercooler boots are made of silicone which is not oil resistant...
after some time the boots breakdown and they blow off under high boost
the way it was explained to me is that the ccv adapted to the exhaust causes a build up pf pressure ... not the venturi effect one would think
the reason us nbs guys do it very often as one of the 1st mods is the oil vapor enters the intake continues through the turbo and into the intercooler pipes... the factory intercooler boots are made of silicone which is not oil resistant...
after some time the boots breakdown and they blow off under high boost
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Postmaster
Joined: Jun 2007
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From: Rogue River, OR
In the example offered by DZL Jim re the CCV entering the exhaust at a 45* angle, what we don't know is, was the tube welded at that angle without a protrusion inside the exhaust? If it did protrude, how far and at what angle was the end of the tube cut at? 90*? 45*? ??? There are many variables that are unknown to someone else's failed installation.
If this mod is done "properly" I just don't understand how it could possibly cause pressure to the crankcase.
Just for clarification: I have mine vented to the atmosphere at the rear wheels.
Rog
If this mod is done "properly" I just don't understand how it could possibly cause pressure to the crankcase.
Just for clarification: I have mine vented to the atmosphere at the rear wheels.
Rog
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Joined: Apr 2004
Posts: 3,658
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From: Ellensburg, Washington
I saw a truck run on a dyno with the ccv tube tied into the exhaust at a 45* angle, what i thought was the right way to do it. Ended up presurizing the oil pan and blew the dipstick out, oily mess all over.
I would not run the ccv to the exhaust for any reason after seeing that.
I have mine dump under the driver's feet and you can see blow-by there at any time you want, so I doubt very much it's a problem and certainly isn't backing up in the motor...
I would not run the ccv to the exhaust for any reason after seeing that.
I have mine dump under the driver's feet and you can see blow-by there at any time you want, so I doubt very much it's a problem and certainly isn't backing up in the motor...
Cowboy Steve
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Joined: Oct 2003
Posts: 5,903
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From: MICHIGAN
If it's done right it WILL pull a vacuum.
I've done more than most and I always try to help show others how to do it. It's not rocket science but you need to follow the instructions.
Look here:
https://www.ford-trucks.com/forums/5...ccv-flack.html
BTW: you really don't need to do it unless you have an intercooler.
It will keep the oil out of the IC and keeps the boots from blowing off due to oil soaking them.
I've done more than most and I always try to help show others how to do it. It's not rocket science but you need to follow the instructions.
Look here:
https://www.ford-trucks.com/forums/5...ccv-flack.html
BTW: you really don't need to do it unless you have an intercooler.
It will keep the oil out of the IC and keeps the boots from blowing off due to oil soaking them.
Postmaster
Joined: Apr 2004
Posts: 3,658
Likes: 0
From: Ellensburg, Washington
If it's done right it WILL pull a vacuum.
I've done more than most and I always try to help show others how to do it. It's not rocket science but you need to follow the instructions.
Look here:
https://www.ford-trucks.com/forums/5...cv-flack.html.
I've done more than most and I always try to help show others how to do it. It's not rocket science but you need to follow the instructions.
Look here:
https://www.ford-trucks.com/forums/5...cv-flack.html.
Like I said, vent it to atomosphere and be done with it
Cowboy Steve
Postmaster
Joined: Sep 2007
Posts: 4,005
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From: Mcafee, NJ
ps if doing it urself use fuel line not heater hose ...heater hose will break down over time
Postmaster
Joined: Jun 2007
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From: Rogue River, OR
Rog