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Guys I'm working on a customer's engine (1981 GTV-6 2.5L) and have run across a part I've never seen before.I'm sure someone knows exactly what it is It is located in the passenger-side cylinder head and it's a plastic clip which supports a plastic/rubber tube which runs down into the block,probably down into the oil sump.By the way this engine has indeterminate mileage on it (don't most Alfas ) and I was pleased to discover factory original head gaskets,fire rings and all.First time I've had the pleasure

oil overflow return or crank breather? Must be an early part soon dropped from the assembly line..

Is there one on the other side?

xrad there is only one of these - pass-side.The end of the piece of hose which this clip supports is just barely visible to the right of the casting which the clip mounts to.

Does the hose run to the area of the distributor drive....maybe to channel oil there?

still going with my initial thoughts...

Mr2Zig no the hose appears to go all the way down to the sump I'll be going down there in a few days and will find out where the other end terminates.
xrad the hose is just hanging out there on the plastic support so I don't think it could serve to return oil from the head but who knows after all it's an Alfa

Isn't it near the air/oil separator on the right hand side valve cover?

Could it be related to that?

I remember someone on this site describing the same thing a while back....

I think MALDI might be on to something

Isn't it near the air/oil separator on the right hand side valve cover?

The tube which is retained by the plastic clip could have originally run up to the oil/vapor seperator which is directly above its location.It's beyond me however why AR would have seen the need to route accumulated oil captured from vapor back to the sump as opposed to just dumping it into the cam cover as is done on my 86 ?

Ok guys it's getting stranger I pulled the sump on this engine today and the attached picture shows where this plastic tube ends up.The weirdest aspect,to me,is that the brass tube that is attached to the oil pump is crimped at its end (and it very much looks to be original AR factory) so it doesn't appear to be any kind of drain from up top ???

Any ideas ?

I remember someone else posting pics of this a few years ago...

maybe some kind of oil heating device??

I have seen other pumps with just the metal part...someone probably did head work and removed the hose part...


Strange...

I do remember it being posted too. but do not remember if any one knew what it was or not.
where does the top go does it just end there on the plastic clip?

slyalfa the top of the tube is supported by the plastic clip in the cylinder head and it is just hanging there.As Maldi already suggested it is located pretty much under the oil vapour seperator on the valve cover so it's possible that originally the tube was connected to the seperator but it's beyond me what its purpose could be ?

I am pretty sure this is useless and was quickly discontinued.

But maybe it is called the "OIL PSYCLONE" and can add 5 hp?!?!

Possibly a probe went down the pipe to detect oil temp thats why its is closed and suppoerted at pump. This probe could have come through a modified tappet cover . Any sign of that.