S&B ccv breather - Dodge Cummins Diesel Forum
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post #1 of 15 (permalink) Old 10-16-2019, 12:08 PM Thread Starter
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S&B ccv breather

Quick question - I am about to install this breather kit. Do I need to gut my filter for this to be most effective? Trying to rationalize the need to gut the filter if all I am looking to do is not dump the oil vapor back into my turbo

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post #2 of 15 (permalink) Old 10-16-2019, 12:47 PM
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No need to gut

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post #3 of 15 (permalink) Old 10-16-2019, 12:54 PM Thread Starter
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Am i correct in saying it would be almost better to leave the ccv filter in tact while running the s&b breather kit? Thinking in terms of double filtration here, while still avoiding the vapors going into the turbo
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post #4 of 15 (permalink) Old 10-16-2019, 04:08 PM
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Yes, leaving internal filter intact will prevent external filter (S&B) from becoming gunk'd up.

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post #5 of 15 (permalink) Old 10-16-2019, 10:37 PM
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I wouldn't recommend leaving the filter media in the stock ccv filter without it hooked up to the stock the location. The turbo pulls a vacuum and helps evacuate any crankcase pressure.

If using the external filter gut the media in the stock ccv filter. I have mine gutted and then ran to an air/oil separator and still hooked to the factory location so I get the benefit of the turbo pulling a vacuum. Running the exterior filter is fine as long as you got the filter media.

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post #6 of 15 (permalink) Old 10-17-2019, 03:11 AM
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Leaving the media inside the stock ccv filter and venting to atmosphere will cause high crank case pressure under heavier load, gut out the ccv filter if venting to atmosphere. Codes will need to be dealt with in regards to a ccv filter delete as well.

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post #7 of 15 (permalink) Old 10-17-2019, 12:37 PM
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Well damn, looks like I'll be gutting mine soon

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post #8 of 15 (permalink) Old 10-17-2019, 01:32 PM
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I definitely would if you are going through with venting to atmosphere. My 2012 was vented to atmosphere by the previous owner but the media was still in the ccv filter, I would see pressures getting up to 5 psi in the crankcase under high load, he’ll even medium load I could see 2.5-3 psi at a time. Just doesn’t relieve the pumping pressures fast enough if the media is left in. Couldn’t imagine what pressures could be seen if you were to have weak piston ring sealing. 5 psi might not seem like much but it is extra stress added to oil seals pushing outwards from inside the engine. My take on it anyways.
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post #9 of 15 (permalink) Old 10-17-2019, 04:10 PM
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Quote:
Originally Posted by Wowegner View Post
Yes, leaving internal filter intact will prevent external filter (S&B) from becoming gunk'd up.


It will delay it but not prevent it. The CCV filter will eventually becomes saturated and still get all over the breather filter.

Mine is covered in bunk as we speak and Iím overdue for changing the CCV filter.


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post #10 of 15 (permalink) Old 10-17-2019, 04:11 PM
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Quote:
Originally Posted by massmayhem View Post
I definitely would if you are going through with venting to atmosphere. My 2012 was vented to atmosphere by the previous owner but the media was still in the ccv filter, I would see pressures getting up to 5 psi in the crankcase under high load, heíll even medium load I could see 2.5-3 psi at a time. Just doesnít relieve the pumping pressures fast enough if the media is left in. Couldnít imagine what pressures could be seen if you were to have weak piston ring sealing. 5 psi might not seem like much but it is extra stress added to oil seals pushing outwards from inside the engine. My take on it anyways.


How were you measuring crank case pressure?


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post #11 of 15 (permalink) Old 10-17-2019, 04:25 PM
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I plan to gut my filter this evening after work

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post #12 of 15 (permalink) Old 10-17-2019, 04:28 PM Thread Starter
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Figured this was the case here, thank you for the additional responses. Truck hasn’t moved since the other day, I’ll be gutting mine tonight as well
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