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And discovered just how cool it must be for Porsche to charge people $90+ dollars for a part thats 99% plastic and 1 metal spring. I broke apart the case on the little bastard because it made me think I've blown the turbo in my Boxster and as it turns out it was just the AOS.

When breaking this thing open, you'll notice the major design flaw. The diaphragm part thats connected to the intake manifold has a very thin layer of plastic (about as thin as a regular condom) that separates the spring. Thin enough to where one can plainly see that with the hot oil and gases that passes through this thing, you just shake your head wondering why Porsche designed the device this way. On my car, the thin plastic part failed sending in 2 quarts of oil into my intake manifold. You can stick your finger right into this diaphragm part and this is where the biggest flaw lies. Porsche could and should have spent 2 cents on a 1 way check valve so only air can enter the device and oil cannot be passed through.

Until a real alternative can be made, I decided to build a breather system that still is vacuum actuated but with a fuel filter/oil filter of some sort in line with the intake manifold along with a PCV valve from another car.

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And discovered just how cool it must be for Porsche to charge people $90+ dollars for a part thats 99% plastic and 1 metal spring. I broke apart the case on the little bastard because it made me think I've blown the turbo in my Boxster and as it turns out it was just the AOS.

When breaking this thing open, you'll notice the major design flaw. The diaphragm part thats connected to the intake manifold has a very thin layer of plastic (about as thin as a regular condom) that separates the spring. Thin enough to where one can plainly see that with the hot oil and gases that passes through this thing, you just shake your head wondering why Porsche designed the device this way. On my car, the thin plastic part failed sending in 2 quarts of oil into my intake manifold. You can stick your finger right into this diaphragm part and this is where the biggest flaw lies. Porsche could and should have spent 2 cents on a 1 way check valve so only air can enter the device and oil cannot be passed through.

Until a real alternative can be made, I decided to build a breather system that still is vacuum actuated but with a fuel filter/oil filter of some sort in line with the intake manifold along with a PCV valve from another car.

Boost:

There is a guy in England who built a very robust system similar to what you are intending to build for a Jaguar XKE (IIRC). It was posted somewhere on the Internet. If I can dig it up, I'll post the link here.

I remember everyone (on another forum) marveling at the guy's ingenuity.

I, for one, admire your initiative.

Regards, Maurice.

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Here's a general idea off a Subaru. The only issue is that this car has 4 hoses. 2 get taken care off, the other 2 get plugged off. Let's see...

Boost:

Found the link: http://bernardembden.com/xjs/pcvfilter/index.htm

You are not going to believe what this guy cooked up!

Regards, Maurice.

Wow Maurice

GREAT FIND!

I was trying to find alternatives because of the larger diameter of the bellow pipe and I guess this is the answer. Great inspiration! Hopefully this will be a more permanent solution to this AOS issue.

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