Normal for this to be in my catch can?

[Subru]

So I opened my 5000-8000km old catch cans (which vent to atmosphere so I never have to empty cans). One catch can catches air from the heads and other one for crank case only. For some reason the can that catches air from the heads have a huge amount of oily build up whereas the crank air has much less.

 

Is this normal to get this much build up?

Images blow (enjoy)

Head breather can:

Crankcase breather can:

 

[Andy_Mac]

That seems like quite a lot out of the heads aye. Is it driven particularly hard? Does yours have the twin ports on the heads or just single?

 

What’s the size of those? They look like the small Mishi ones?
Also having them VTA doesn’t negate the need to empty them periodically. 

 

 

[Subru]

1 hour ago, Andy_Mac said:

That seems like quite a lot out of the heads aye. Is it driven particularly hard? Does yours have the twin ports on the heads or just single?

 

What’s the size of those? They look like the small Mishi ones?
Also having them VTA doesn’t negate the need to empty them periodically. 

 

 

wouldn't say its driven 'hard' but it definitely sees its fair share of boost for the road, its close to 240kw if that makes a difference.

Yes the heads have twin ports.

Not sure what size but its pretty small. The majority of the build up is in the photo shown. not much in the bottom of the can (anything that can reach the bottom drains out)

[Andy_Mac]

10 hours ago, Subru said:

wouldn't say its driven 'hard' but it definitely sees its fair share of boost for the road, its close to 240kw if that makes a difference.

Yes the heads have twin ports.

Not sure what size but it’s pretty small. The majority of the build up is in the photo shown. not much in the bottom of the can (anything that can reach the bottom drains out)

Which port on the heads got used? Front or back? One is baffled and the other not so it could potentially be hooked up to the wrong one.
If the bottom of the can isn’t full then it isn’t so bad. It’s just full of moisture which is preventing it from seeping through that bottom baffle plate

[Subru]

2 hours ago, Andy_Mac said:

Which port on the heads got used? Front or back? One is baffled and the other not so it could potentially be hooked up to the wrong one.
If the bottom of the can isn’t full then it isn’t so bad. It’s just full of moisture which is preventing it from seeping through that bottom baffle plate

Yeah its just buildup on the baffle plate. Just weird that the crank case is much cleaner but maybe thats normal.

I'll have to check which one i plumbed them to, can't remember atm.

[Loren]

That is sfa... don't worry about it.

[Subru]

4 hours ago, Loren said:

That is sfa... don't worry about it.

Ok good to hear haha

[boon]

So by "VTA" you mean "just dribbles oil on the road"? 😮

[ADIKT]

On 23/08/2022 at 3:21 PM, boon said:

So by "VTA" you mean "just dribbles oil on the road"? 😮

I'm assuming it drains in to the sump 

[Subru]

I have fitted a valve so I can empty the can easily under the car. The air that goes through the baffle/filter goes to atmosphere (my intake has no ports)