STELAN Aftermarket AOS

[maytag]

Originally Posted by SC-986

https://www.usplastic.com/catalog/item.aspx?itemid=23600



Not clear but translucent enough to see any oil.

I like it, but still uncertain to me if it'll collapse under vacuum, the way my first one did. But being silicone is a plus, for sure.

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[Gelbster]

Originally Posted by SC-986

https://www.usplastic.com/catalog/item.aspx?itemid=23600

Not clear but translucent enough to see any oil.

In my experience only the steel wire reinforced tubing will withstand the vacuum in this diameter. The smaller vacuum lines can be thick wall silicone without collapsing but not the large ones we are discussing.
It will be great if the hose shown stays clear colored and does not become brittle. The silicone equivalent is expensive in clear and difficult to find.

[911monty]

Have you seen this? Best solution I've seen so far.

https://www.ecstuning.com/b-ecs-parts/ecs-tuning-baffled-oil-catch-can-8oz/003779ecs05a02~a/

[Gelbster]

I'm skeptical about the ECS system linked above because many catch can systems have been tried for the M96 and none work correctly - so far. The generic ECS catch can seems much the same as other systems.
The limiting factor on the M96 is reputed to be the low tension oil control rings if you read this and other threads.
http://986forum.com/forums/boxster-general-discussions/31410-aos.html

[maytag]

The ECS (and several other) catch-can setups have provisions to "vent" back to vacuum, so I don't think the rings are the problem. As I see it, we're introducing volume to the system, but once initial vacuum is built, the added volume is not likely a problem. (I say "not likely" because I haven't tried it myself. there is theoretically a potential for the additional time required to regulate changes in vacuum in the larger volume to create a lag under part-throttle situations?)

For me, the problem with this catch-can is that I couldn't find anyplace to mount it, except in the trunk, and I don't want to do that to my street car.

[rfuerst911sc]

Why does the catch can have to be mounted in the engine bay or trunk ? Is there enough space down by the transmission ? A hose could extend from the AOS down to the catch can then up to the manifold . This would create a loop of hose plus the can plus the OEM AOS . Crazy idea ?

[Gilles]

Originally Posted by rfuerst911sc

Why does the catch can have to be mounted in the engine, Is there enough space down by the transmission ? Crazy idea ?

I could think of a place or two, around the transmission where you could mount a catch can if you want/need..

[Quadcammer]

you can simply run a catch can inline with the hose to the intake manifold. You won't remove ALL the oil, but it may save you if you have a dramatic AOS failure.

[Quadcammer]

crazy no, but finding relatively inexpensive oil resistant hose in that size is relatively tricky.