Can I vent my crankcase breather into the air filter?

[volvopaul]

Now I really wouldnt want to disagree with volvopaul as he knows far more than I ever will but on our last boat which had KAD42's the breather pipe went into the back of the air filter. It was like that when we bought it and I thought it was supposed to be that way. Now I am wondering if it was a previous owner modification??

On the issue of air circulation I was also advised to have plenty and fitted extra fans as a result.

Greg quite right it does, so the oil must doesn't block the air filter, what it does do is block the turbo, pipes and intercooler matrix, what swede thought that one up, it was also the same on the kad 43 until the 44 and 300 was born, then a separator was used down the side of the block draining back to the sump, not before time eh!

 

[Greg2]

Greg quite right it does, so the oil must doesn't block the air filter, what it does do is block the turbo, pipes and intercooler matrix, what swede thought that one up, it was also the same on the kad 43 until the 44 and 300 was born, then a separator was used down the side of the block draining back to the sump, not before time eh!

Ah, with you now Paul. A design flaw by VP........surely not!!!

 

[Pendana]

Now I really wouldnt want to disagree with volvopaul as he knows far more than I ever will but on our last boat which had KAD42's the breather pipe went into the back of the air filter. It was like that when we bought it and I thought it was supposed to be that way. Now I am wondering if it was a previous owner modification??

That's strange, the arrangement on my KAD42's are like the OP's - the open end of the breather pipe just dangles about 3 inches below the air intake. They are early 42A's mind, perhaps they did later mod. I have never noticed oil drips in the bilge though.

 

[mad_boater]

While cleaning the engine room recently I noticed a few drips of oil from the rocker cover breather pipe which just hangs down in the engine bay (Volvo KAD42 diesel). This makes an unnecessary mess in the bilges and my first thought was to guide the pipe into a plastic bottle which I can then empty from time to time. Then I thought back to my old Mini and remembered that the breather was connected to the back of the air filter casing - problem sorted!

Can anyone tell me if there is a problem doing this. Why don't Volvo do it as standard? Perhaps the air intake will cause a vacuum in the crankcase instead of just relieving pressure?

http://www.asap-supplies.com/marine/fuel-systems.These people do a Racal crankcase venting system.I fitted a pair on my old Fords they worked a treat,expensive though.

 

[Greg2]

That's strange, the arrangement on my KAD42's are like the OP's - the open end of the breather pipe just dangles about 3 inches below the air intake. They are early 42A's mind, perhaps they did later mod. I have never noticed oil drips in the bilge though.

Ours were 42B's so maybe a mod. Bit of a strange one though in light of what volvopaul says....

 

[Elza_Skip]

Hi

I have TAMD41b, which do have the breather filter, however on the older engine these clog quickly and are £35ea. I did find that Volvo do a kit specifically to take the breather to the air filter, but I went the other way and converted the breather filters to a wire mesh oil separator design that seems to be working well

 

[Red]

I have remotely fixed the breather from my KAD32 to inside the drivers console on my rib and it seems to be ok

Regards