Oil catch can - well worth it

[mcbutler]

I fitted the mishimoto oil catch can a while back and 10k miles later (nearer 8k to be honest) i removed it to look inside.

Video here https://youtu.be/3q-83kGKtEU

 

[sumotan]

Which engine pls ?

Thks

 

[mcbutler]

Which engine pls ?

Thks

N54 35i or any other direct injection engine

 

[Anonymous]

Tends to be a bad problem on N54s along with inlet ports coking up…

Later engines N55 / N20 don’t seem to suffer and the latest B48/B58 even when tuned don’t seem to need them..

 

[dhobbs]

Do newer direct injection engines have these as standard?

 

[tiglon]

Seems a worthwhile preventative mod for £150. I'm going to have a look at getting one

 

[Anonymous]

Do newer direct injection engines have these as standard?

Later designs with the benefit of hindsight did a lot of revisions…

Better design to avoid crankcase pumping losses

Better oil fume capture design…if you look at the N55 / N20 design they used a lot more sophisticated cam cover venting etc

Complex valving to cover both boost and no boost conditions..

When I had my inlet ports checked at 50k miles there was negligible carbon build-up

 

[mcbutler]

Tends to be a bad problem on N54s along with inlet ports coking up…

Later engines N55 / N20 don’t seem to suffer and the latest B48/B58 even when tuned don’t seem to need them..

They may have some sort of similar device fitted as oem maybe.

 

[mcbutler]

Do newer direct injection engines have these as standard?

Nope, some may do but not generally...

 

[Anonymous]

Tends to be a bad problem on N54s along with inlet ports coking up…

Later engines N55 / N20 don’t seem to suffer and the latest B48/B58 even when tuned don’t seem to need them..

They may have some sort of similar device fitted as oem maybe.

Like many things, long after the design phase things start to pop out of the woodwork..2nd or 3rd generation designs benefit from having that perspective..so on the N20s charge pipes breaking up are things of the past..better /cleverer oil and water cooling, better fresh air intakes etc etc . ..

On the other hand often first generation designs are over engineered cause they don't know the limits..that in part is why the N54 can be tuned pro-rata in a way the N20 can't..its stronger but heavier..