Z_de_Suisse

As I was working on my car, I also extracted the intake manifold. This thing sitting in the middle of the engine is actually quite big !



After removing a few screws, it finally comes out



Once removed, there a big whole in the middle




Once on the bench, it is big but actually quite light (aluminium and magnesium)



What's surprising is the quantity of oil that comes out of it



and all the pipes are dirty




This raises the question of the opportunity of installing an oil catch can. It seems quite some oil goes in the admission.

Next surprise is the gray paste all around the manifold. Obviously this was done by one of the previous owner, but not sure if this was preventive or if it was to fix an air leak...



At this point I'm not quite sure if I should remove the paste to clean the inside and change the joint and the screws or if I should just leave it as it is... Guts feel for the moment is not to fix what ain't broken...

Jon2007E63P30

Yes, it would benefit from a catch can. If you need the fractional improvement in performance

BoostedAero

It is also really nice to look into the rear view mirror and not question if you have a bigger issue going due to seeing some burnt off oil =D

Of course I am usually looking back there to see how far off I can leave the m3s

Infiniti

Has anyone done a custom catch can? it seem the weistec catch can is the easiest because of the fittings that go on the manifold.

Dublinoh

The manifold is two piece, if it leaks the dealership recommends a new intake manifold $$$$$. It is possible to reseal the pieces and I think that is what you are seeing here. If you did not have a check engine light before, you probably should leave it alone. However, this is a cost saving repair and not guaranteed for the long run. You could replace the intake.....but those fail too. I had my intake resealed when it was causing intermittent check engine lights and it has not recurred in two years.