CCV system still getting oil in intake

[David Diener]

Hi guys,

I have a environvent ccv system on my boat and its not getting the job done. Getting a fair amount of oil in the intake system. I have a 6bta with a v drive. So I have the vent set up on the front valve cover. But due to a low engine box I had to modify the evirovent system to fit under the box. So I don’t have enough vertical rise. I was thinking about putting an oil separator in line to take care of this issue. My question is does anyone know a good oil separator I could use and also should I leave my puke bottle in the system and put oil separator between puke tube and air filter or should I get rid of puke tube and just put oil separator inline? Thanks for the help. Hope everyone is staying safe through this virus.!

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[David Diener]

Hi Tony,

It is a modified version of your envirovent product. I ordered it from you but when I got it the neck didn’t fit under my engine box. I had to put a different neck off the valve cover to make it shorter so it would fit under my engine box. I just used a 1/2 in pipe as the neck. Believe it is 1/2 inch inside diameter. Then I used a quick disconnect ,kind of a fire hose type of connector, to tie into the CCV hose. I think that is part of the issue. If I had a longer neck it think it would reduce the amount of oil. I just have no room to go up.

My air filter is down low in the engine compartment. I flipped my turbo for water ingestion issues. Have a cobra head silicone hose on the intake side of turbo. Then it connects to L shape pipe which the air filter in on. It basically sits on the boat stringer.

I do try to run on the lower end of oil capacity. I aim for min level on oil dipstick which I’ve determined to be around 11-12 Qts. Do notice a big difference in he amount of oil I get in puke bottle running on the lower end of oil capacity.

I’m trying to decide if I should Do any other mods to this system? I keep thinking about an oil separating filter or something along those lines. Or maybe I should just live with it.
Thanks for the help and all the resources you provide!

[Tony Athens]

This is not my work or my Envirovent system as it was designed for this engine–Something you tried to copy or redo for some reason? Where is the air cleaner? What is the ID of the air cleaner neck? Does not look like an S&B?

No problem with that, but to be honest, I’m not really sure what is going on of what you have actually put together.. With a v-drive , oil sump capacity is very critical unless you have an early engine with a front steel sump.. .

Tony

[David Diener]

Hi,

I’ve attached some pics of my set up. You’re right Rob. I have it venting off #6 valve cover on the front side of boat. My cummins ccv vent points down. Had the engine out a couple yrs ago and it looked like the cover cound be flipped? I was thinking about doing it then, but it kinda left my mind. The engine does struggle in the cold and sometimes after it sits for awhile. Over a week. I was thinking it could be a leaky valve in the lift pump. Was going to try to put a new lift pump in to see if it makes a difference. Thinking maybe fuel running backwards out of the pump? Ive tried the oil cap trick and powering the engine up. The cap stays put. So there doesn’t appear to be excessive pressure at the cap. Not sure if the oil does any harm but it is messy. I was thinking putting an oil separator in line to try and reduce the amount of oil.

Thanks for the help!

[Tony Athens]

He needs to post some good pics of all and also let me know about the vent on the side of the engine behind the aftercooler–Does it point up or point down? In some V-DRIVE installations, this vent location can be used advantageously when there in no clearance above #6 valve cover.

Pictures of the install are needed.

[Rob Schepis]

Mix up on words here. Front valve cover would be cylinder #1 starting at the timing cover. This is the Albin 28 w/ the turbo flip, right? So when you say “front” you are talking vessel, not engine, so actually the rear cylinder, being #6. That’s the spot.

You must follow the recommendations here: https://www.sbmar.com/articles/oil-pan-capacities-for-cummins-marine-engines/

I see you’re in FL but how quickly does she cold start?

[Tony Athens]

Send me good pics of all.. V-drives should never use the timing cover system

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