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Obin Robinson's Avatar
Join Date: Aug 2000
Location: Virginia Beach, VA
Posts: 1,791
Porsche Crest crankcase breather on 924... needed?


while cleaning the intake manifold on my 924, i took off the crankcase breather-looking thing that was on the manifold. this was situated a big back on the manifold, between the rear two manifold "tunnels".

the stock one was PLUGGED. it looked to be caked with goo. i took it off, but didn't chuck it out just yet. i noticed that it was already capped with a rubber plug for some reason.

i also noticed that later 924s DID NOT have a crankcase breather in this location. did they have one somewhere else?

so should i put my plugged one back on the car? or should i just cap it with a generic pipe fitting that will forever seal it off if i don't need it at all.

do i need it? i don't need to worry about emissions on this car.



Old 05-25-2001, 11:57 AM
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pst pst is offline
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Join Date: Jul 2000
Location: Wheaton,Il USA
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That's not a crankcase breather. It's the check valve for the AIR system. Only the eatle cars had it. The hole in the manifold feeds a long slot on the bottom of the intake manifold and cylinder head that feeds air to the exhuast ports via small holes drilled into the head. I have never seen one that wasn't clogged. I have never had the AIR pump ans system along with the EGR system on my car and it hasn't effected the emmission tests.

Old 05-25-2001, 12:58 PM
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